Chemical Combination Research Articles

Influences of admixture combinations on the formation and stability of air bubbles in fresh cementitious materials

Various mineral and chemical admixtures have been widely added to modern concrete mixtures but few studies have investigated the characteristics of air bubbles in fresh cementitious materials under different admixture combinations. This study aimed to explore the influences of mineral and chemical admixture combinations including one Class F fly ash, three different air entraining admixtures (AEAs), and two various polycarboxylate superplasticizers (SPs) on the formation and stability of air bubbles in fresh cementitious systems. The foam index tests on fresh cementitious paste were utilized to explore the impacts of fly ash, AEA types, and SP on foam ability. Also, twelve fresh concrete mixtures were produced in laboratory, then the air volume content and air bubble spacing were measured within 60 min to assess the air bubble stability. Test results suggested that adding fly ash decreased the foam ability of AEA, while the SP addition improved the foam ability. The neutralized vinsol-resin based AEA1 had a higher foam ability than synthetic AEA2 and AEA3. The foam index of paste with SP addition showed a higher correlation with the AEA dosage for fresh concrete than those without SP addition. The air bubble stability in fresh concrete was highly affected by the admixture combinations. Overall, neutralized vinsol-resin based AEA1 produced more stable air bubbles than synthetic AEA2 and AEA3.

Impact of chemicals and physical stressors on horizontal gene transfer via natural transformation

Contaminants in the environment can increase natural transformation rates in bacteria. However, the co-occurrence of a large suite of contaminants may result in final transformation rates that are not based on the geometric addition of individual responses. Here we show that the combination of different chemicals and physical stressors results in natural transformation that do not always follow geometric additive responses. Specifically, some combinations increased transformation rates synergistically, while others decreased rates antagonistically. Unpredictability in the natural transformation outcome was also observed when Acinetobacter baylyi ADP1 was exposed to chlorinated reclaimed water. We determined that the stimulatory effect of contaminants on natural transformation can be compensated when extracellular DNA concentrations fall below 0.1 ng l−1 per 2 × 107 cells. Thus, wastewater treatment process that can minimize concentrations of extracellular DNA and cell load would be a key intervention strategy to minimize natural transformation frequency arising from the use of treated wastewater.

Evaluation of Combinations Between Menthe Extract, Zinc Nano Oxide and Phenol Compound on Antifungal

From August 17 to January 1, 2023, this investigation was carried out in the postgraduate lab at the University of Kerbala. The Menthe spicata plant was removed from the city of Karbala on July 11, 2022, and phenol component was extracted from ethanol alcohol menthe extract. from the Nanomaterials, Practical size, and Zno nanoparticals (33-40nm) In order to assess the effectiveness of various concentrations of combinations of zinc nanoparticles, menthe extract, and phenol obtained from menthe extract, as well as the virulence of fungal isolates Candida albicans, Trichophyton rubrum, and Microsporum canis. The results demonstrate that menthe extract, zinc nanooxide, and phenol chemical combinations are more effective than menthe extract alone in enhancing the inhibition zone against fungus, and that nano zinc has a more significant impact than phenol and menthe extract in reducing the amount of antifungal required. The goal of this study was to diminish the pathogenic fungal growth suppression using a combination of nano zinc, phenol, and menthe extract antifungals (M. canis, T. mentagrophyte, and C. albican).

Strategical design of bridged vanillic Schiff-bases as jet fuel antioxidants

Two vanillic Schiff-base antioxidants, 2-methoxy-4-(((4-(phenylamino)phenyl)imino)methyl)phenol (PPIMP) and 2-methoxy-4-(((4-(phenylamino)phenyl)amino)methyl)phenol (PPAMP), have been synthesized through the Schiff-base condensation reaction and hydrogenation to improve the thermal-oxidative stability of hydrocarbon fuels. Both novel antioxidants exhibited remarkable performance in decalin and JP-10 fuel. For example, pressurized differential scanning calorimetry (P-DSC) tests showed that adding 100 ppm of PPIMP or PPAMP to JP-10 improved the oxidation induction time from 9.5 min to 19.2 and 27.8 min, respectively. JFTOT tests showed that adding 100 ppm of either antioxidant helped alleviate JP-10 deposition. Theoretical calculations on electron properties and orbital conformation revealed that the C = N bridge in PPIMP had an electron donation effect and conjugative stabilization effect, which can stabilize intermediate antioxidant radicals and improve the antioxidants’ reactivity. The hydrogenation of C = N further enhanced the performance of PPAMP by introducing an additional antioxidant group. Therefore, both C = N and C-N in the synthesized antioxidants were found to be essential. The chemical combination of small molecular antioxidants achieves 1 + 1 > 2 synergism with the assistance of the azomethine group.

Optimization of surfactant-polymer flooding for enhanced oil recovery

Chemical enhanced oil recovery applications continue to face a variety of obstacles, particularly in high saline and high-temperature reservoirs, in addition to high chemical prices. This issue creates difficulty in developing optimal recipes that can withstand these extreme circumstances and so achieve maximal hydrocarbon recovery at the lowest feasible cost. The usefulness of surfactant polymer (SP) in mobilizing oil and increasing sweep efficiency in carbonate rocks is assessed in this article. A thermo-viscosifying polymer and an acrylamido tertiary butyl sulfonate (ATBS)/acrylamide (AM) copolymer were employed. Surfactants of various grades of amphoteric carboxybetain are used. These potential chemicals were chosen after a thorough study of previous research, which included long-term thermal stability, fluid rheology, interfacial tension, adsorption, and microfluidic tests. The contact angles were measured using a captive drop analyzer at high pressure and high temperature. The core-flooding experiments for slug size and injection sequence optimization were carried out using 12-inch long and 1.5-inch diameter limestone cores. For two weeks, the samples were aged. The trials were carried out at 90 °C. The seawater (SW) salinity utilized in the injection was 57,000 ppm. The findings highlighted the importance of surfactant-polymer interactions in wettability and fluid rheology. The best chemical combination was carboxybetaine (0.05 wt%) and ATBS/AM (0.25 wt%) which recovered 31.29% of the residual oil saturation (ROS), or 11.63% of the original oil in place (OIIP). The optimal slug size was 3.5 PV, which recovered 34.21% of the ROS and 17.05% of the OIIP. The optimum injection sequence was the co-injection of surfactant and polymer SW-S1P1-SW, which extracted 31.29% of the ROS and 11.63% of the OIIP. The recoveries were discovered to be related to the slug’s size. The chemical injection sequence was critical to the eventual oil recovery. Among the other sequences, SW-SP-SW had the highest recovery (SW-P-S-SW, SW-S-SW-P-SW, and SW-P-SW-S-SW). This is thought to be owing to the compounds' synergistic impact. We found that there is no systematic optimization process that combines the effect of chemicals, slug size, and sequence in one study, which gave us the motivation to cover the research gap.

57‐3: Using Digital Twins of OLEDs to Quantify the Impact of Molecular Properties on Device Performance for Rational Design

The discovery of optimal combinations of chemicals for performant devices remains a persisting challenge in OLED technology. We present a digital twin approach to identify molecular properties which cause performance bottlenecks, and demonstrate the dependence of device performance on minute details such as local electrostatic influences on ionization potential.

Thermo-voltage and strength performance of catalysed biomass concrete with Phosphomolybdic Acid and Ferric Chloride as renewable energy source

Catalyzed biomass concrete (CBC) is a cutting-edge technology that produces its own voltages when exposed to temperature changes. It is achieved by mixing catalyst and biomass in conventional concrete during fresh state, and the product generates electricity by oxidation. It helps in reducing cement consumption and minimizing environmental effect, yet to produce new renewable energy from concrete itself. Existing studies has proven the voltage effectiveness of CBC but still low in compressive strength, making it not suitable to serve as load carrying component. Hence in this study, a new chemical combination of catalyst in CBC is examined and reported in its voltage and compressive strength performance. Cubes and specimens with catalyst percentage ranging from 5% to 40% were prepared and tested its compressive strength up to 56 days and its voltage performance under three different exposing condition from 0°C to 100°C. The findings show that CBC specimens with such catalyst combination able to produce voltages, where specimens with 40% of catalyst had the highest voltage measurement of 0.443V. While for compressive strength, CBC cubes with 10% of catalyst performed higher than 40%, but the strength captured with new catalyst combination is better that existing study. It is evident that CBC with such catalyst suitable to serve as load bearing component, and at the same time, generating electricity with complete circuit, under temperature different.

Effect of psychoactive substances on cardiac and locomotory activity of juvenile marbled crayfish Procambarus virginalis

Pharmaceutically active compounds are common and increasing in the aquatic environment. Evidence suggests they have adverse effects on non-target organisms, and they are classified as emerging pollutants for a variety of aquatic organisms. To determine the effects of environmentally relevant levels of psychoactive compounds on non-target organisms, we analyzed cardiac and locomotory activity in early developmental stages of marbled crayfish Procambarus virginalis. Responses to sertraline, methamphetamine, and a mixture of citalopram, oxazepam, sertraline, tramadol, venlafaxine, and methamphetamine at a concentration of 1 µg L-1 of each compound were assessed. On day four of exposure, cardiac activity was recorded for 5 min, and on day eight, locomotory activity was recorded for 15 min. There was a significant increase (p < 0.01) in heart rate in methamphetamine-exposed and Mix-exposed juveniles compared to the unexposed control and there was significant difference (p < 0.01) in proportion of time (activity %) was observed with sertraline-exposed, whereas velocity, and distance moved did not significantly differ (p > 0.05) in exposed and control animals. These findings revealed that low concentrations of chemicals and their mixtures can modify the physiological state of aquatic animals without outward manifestations (activity, distance moved, and velocity). Aquatic animals can be impacted earlier than is visible, but effects can potentially lead to substantial changes in populations and in ecosystem processes. Additional research to investigate chemical combinations, exposure systems, and organism physiological and molecular responses may provide evidence of broad impact of environmental pharmaceuticals.

Biology of fall armyworm – an introduction

AbstractFall armyworm, Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae), is a voracious pest of various crops, such as maize, rice, and sugarcane. Originally from the tropical and subtropical regions of the Americas, it recently spread around the world. As populations can be resistant to pesticides, integrated pest management (IPM) is important, relying on a combination of chemical, physical, and biological control. This special issue of Entomologia Experimentalis et Applicata includes both fundamental and applied studies on fall armyworm biology, monitoring, and control, setting the stage for the development of effective, sustainable strategies to protect crops against fall armyworm, both in its native range and in areas where it has invaded.

EFFICACY OF HERBICIDES AND SHADING METHODS TO CONTROL INVASIVE SPHAGNETICOLA TRILOBATA (L.) PRUSKI

Sphagneticola trilobata (L.) Pruski is one of the most noxious invasive plant species, posing a serious threat to native biodiversity. This species has been invading large areas of Bangladesh for the last two decades. The study investigated the efficacy of herbicides and shading treatments during winter and monsoon to find an effective control method for S. trilobata. Both surface-inhabiting (Glyphosate) and root-inhabiting (Paraquat) herbicides were applied for six months in five different combinations (100% Glyphosate, 75% Glyphosate + 25% Paraquat, 50% Glyphosate + 50% Paraquat, 25% Glyphosate + 75% Paraquat, and 100% Paraquat) and the percentage coverage was measured for each experimental plot. Results from the study showed that all shading and chemical combinations of Glyphosate and Paraquat significantly reduced the percentage coverage of S. trilobata in each experimental plot (p &lt; 0.05). However, the shading and Paraquat-dominated combinations reduced the coverage slowly compared to the Glyphosate-dominated ones. Among five different combinations, Paraquat-dominated herbicides were less effective in controlling the species. On the other hand, the Glyphosate-dominated combinations completely eradicated the species within a week but increased thereafter. Meanwhile, the seasonal variation was found to be highly significant (p &lt; 0.0001) among treatments, and a significant reduction was observed in winter compared to the monsoon. The results of this study highlighted that the Glyphosate-dominated combinations were the fastest, while the Paraquat-dominated combinations and shading were slower control methods.

A novel titanium sulfate modified poly-magnesium-silicate coagulant with improved pH range for dye removal

Coagulation with inorganic Mg-based coagulants is an efficient technology for dyes removal. However, the promising poly-magnesium-silicate (PMS) coagulant with better aggregation abilities can only be used in a very limited pH range. In this study, poly-magnesium-titanium-silicate (PMTS) was prepared by using titanium sulfate modified PMS. For the treatment of Congo red dye wastewater, PMTS(S), PMTS(Cl) and PMTS(N) synthesized under different acid media (H2SO4, HCl and HNO3) were used. PMTSs had the highest coagulation efficiency at Ti/Mg molar ratio of 0.75 and B value of 1.5. PMTSs outperformed PMS in the initial pH range of 5.50–9.00, with a dye removal efficiency of over 90% at 17.1 mg/L. Under optimal conditions, PMTS(S) had higher coagulation efficiency than that of PMTS(Cl) and PMTS(N), and the settling rate of the four Mg-based coagulants followed an order of PMTS(S) > PMS > PMTS(Cl) > PMTS(N). The coagulation mechanisms of PMTSs on Congo red dye were elucidated by further analysis of coagulation precipitates using UV, FT-IR, SEM and EDS. These results showed that the basis mechanism for floc formation was charge neutralization, while the key to floc formation was chemical combination. Based on the SEM and FTIR results, PMTSs could be found to have special shapes and chain structures, such as Si–O–Ti, Si–O–Mg, Ti–O–Ti, Mg–OH and Ti–OH. Combined with the results of zeta potential, the dominant mechanisms of PMTSs were more likely to be adsorption-interparticle bridging and net-sweeping. In a word, this study provided a highly efficient coagulant with a wide range of applicable pH for the control of dye contamination, and shed light on the potential application of PMTS in the removal of dye pollutants.

Reconfigurable graphene square patch antenna

In this paper, a dual band graphene square patch antenna is designed for operation in 4 THz and 7.75 THz. The main idea of this paper is partitioning the graphene patch into pieces to have more degrees of freedom to reconfigure the polarization of antenna. Antennas polarization is controlled by partitioning the patch into 9 elements, resizing them and changing their chemical potential. The main operation mode of antenna has linear polarization in its boresight. Circular polarization is reached in five different modes; each mode has its own advantages. The main purpose is to achieve minimum efficiency loss modes among all chemical potential combination modes. Each mode has two separate types, one type will have RHCP and the other one will have LHCP, switching types will change RHCP to LHCP or LHCP to RHCP.

Novel insecticides for the management of shoot fly, Atherigona approximata Malloch (Diptera: Muscidae): an emerging insect pest of wheat in India

Shoot flies (Atherigona spp.) are the members of muscidae family which have got economic importance as pest of several crops of Gramineae family mainly cereals and millets. One of the most effective management strategies for controlling shoot fly is the use of novel insecticides either as seed dressers, soil applicators or as foliar treatment. Under the field condition, seed treatment with thiamethoxam 30 FS @ 5 ml/kg seed followed by a spray of cypermethrin 10 EC @ 0.5 ml/l has recorded least shoot fly oviposition (0.84 and 0.94 eggs/plant), dead heart (8.90% and 9.96%), more per cent productive tillers (79.68% and 79.50%), grain yield (32.22 and 31.27 q/ha) and BC ratio (2.05 and 1.99) as compared to the rest of the combinations during the investigation in rabi, 2019–20 and 2020–21, respectively. Under the changing climate where, the minor insect pests attaining major pest status, the present investigation would help the policy makers to reduce the losses caused by shoot fly infestation significantly by using an effective above-mentioned chemical treatment combination that can be integrated in future IPM modules.

Oxiforms: Unique cysteine residue- and chemotype-specified chemical combinations can produce functionally-distinct proteoforms: Like how mixing primary colours creates new shades, cysteine residue- and chemotype-specified chemical combinations can produce functionally-distinct proteoforms called oxiforms: Like how mixing primary colours creates new shades, cysteine residue- and chemotype-specified chemical combinations can produce functionally-distinct proteoforms called oxiforms.

A single protein molecule with one or more cysteine residues can occupy a plurality of unique residue and oxidation-chemotype specified proteoforms that I term oxiforms. In binary reduced or oxidised terms, one molecule with three cysteines will adopt one of eight unique oxiforms. Residue-defined sulfur chemistry endows specific oxiforms with distinct functionally-relevant biophysical properties (e.g., steric effects). Their emergent complexity means a functionally-relevant effect may only manifest when multiple cysteines are oxidised. Like how mixing colours makes new shades, combining discrete redox chemistries-colours-can create a kaleidoscope of oxiform hues. The sheer diversity of oxiforms co-existing within the human body provides a biological basis for redox heterogeneity. Of evolutionary significance, oxiforms may enable individual cells to mount a broad spectrum of responses to the same stimulus. Their biological significance, however plausible, is speculative because protein-specific oxiforms remain essentially unexplored. Excitingly, pioneering new techniques can push the field into uncharted territory by quantifying oxiforms. The oxiform concept can advance our understanding of redox-regulation in health and disease.

Cs2SnI6 perovskites nanostructures as excellent photocatalytic degradation of organic dye pollutants in water under visible light: Synthesis and characterization

Pollution of surface waters containing chemical dye combinations and/or biological materials can have adverse effects on human health and other organisms, even in small quantities. The photocatalytic oxidation procedure has been widely regarded as a commercially viable method of removing environmental pollutants. In recent research, Caesium-hexaiodostannate nanostructures (Cs2SnI6) were prepared through a co-precipitation approach and their photocatalytic performance was analyzed. A number of surfactants were examined for their influence on the structure, purity, and morphology of the sample. It was found in the SEM data that the presence of surfactants has a negative impact on the morphology, which may be due to the inability to remove surfactants by calcination at high temperatures. Photocatalytic activity of Cs2SnI6 catalysts was demonstrated over a variety of organic dyes, including methylene blue (MB), rhodamine b (RhB), methyl orange (MO), and methyl violet (MV). Upon exposure to visible light for 180 min, 5 ppm methylene blue showed the greatest degradation (84.0%). Cs2SnI6 nanostructures are being applied for the first time in photocatalytic applications. Due to their wide bandgap (1.7 eV) in the visible region, they may be a suitable candidate for water purification. Moreover, the results indicated that the efficiency of photocatalysis was affected by various parameters, including pH, dye concentration, dye types, catalyst dosages, and surfactants. In the recyclability test, Cs2SnI6 nanostructures were found to be stable, and the removal efficiency was reduced by 6.9% after the fifth run.

Biochar based self cleaning superhydrophobic surface with aqueous DESphobic properties

In this work, facile fabrication of chemically stable superhydrophobic surfaces based on biocompatible, fluorine free, carbon rich biochar has been reported. Biochar synthesized from dried rice straw by pyrolysis at 550˚C, which was characterized using Fourier Transform Infrared (FTIR) and Scanning Electron Microscopy (SEM). The biochar coated surface demonstrated superhydrophobic behaviour with static water CA > 150°. Aqueous drops remain in superhydrophobic state due to stability of Cassie-Baxter wetting regime and can shows very high-water contact angle (WCA > 160°) and self-cleaning behaviour. Such a very high WCA have been achieved typically by combination of low energy chemicals (fluorine based) and surface textures. However, no harsh chemical treatment of biochar was performed and a simple methodology of creating biochar layer onto the substate was adopted. Such surface also demonstrated repellent properties against aqueous mixtures of deep eutectic solvent (DES). A spherical aqueous DES drop can be easily formed onto the biochar surface for image analysis. The density of the liquid sample with a small sample volume can be assessed using this drop shape that was measured on the superhydrophobic biochar surface.

Association of the urinary polycyclic aromatic hydrocarbons with sex hormones stratified by menopausal status older than 20 years: a mixture analysis

We examined the relationships between exposure to polycyclic aromatic hydrocarbons (PAH) metabolites and sex hormones in pre- and postmenopausal women from the 2013-2016 National Health and Nutrition Examination Survey. The study comprised 648 premenopausal and 370 postmenopausal women (aged 20years or older) with comprehensive data on PAH metabolites and sex steroid hormones. To evaluate the correlations between individual or mixture of the PAH metabolites and sex hormones stratified by menopausal status, we used linear regression and Bayesian kernel machine regression (BKMR). After controlling for confounders, 1-Hydroxynaphthalene (1-NAP) was inversely associated with total testosterone (TT), and 1-NAP, 3-Hydroxyfluorene (3-FLU), and 2-Hydroxyfluorene (2-FLU) were inversely associated with estradiol (E2). 3-FLU was positively associated with sex hormone-binding globulin (SHBG) and TT/E2, whereas 1-NAP and 2-FLU were inversely associated with free androgen index (FAI). In the BKMR analyses, chemical combination concentrations at or above the 55th percentile were inversely connected to E2, TT, and FAI values but positively correlated with SHBG when compared with the matching 50th percentile. In addition, we only found that mixed exposure to PAHs was positively associated with TT and SHBG in premenopausal women. Exposure to PAH metabolites, either alone or as a mixture, was negatively associated with E2, TT, FAI, and TT/E2 but positively associated with SHBG. These associations were stronger among postmenopausal women.

Finding complement of inefficient feature clusters obtained by metaheuristic optimization algorithms to detect rock mineral types

Minerals are inorganic substances that formed homogeneously by the combination of chemicals that comprise the Earth’s crust and mines are the commercially valuable natural minerals. Since minerals form as a result of chemical interactions in different natural environments, each may have different physical properties. Manually classifying minerals with the naked eye results in distinguishing issues, economic losses, and performance problems. In this study, a deep learning–based hybrid method for distinguishing seven mineral types is proposed. Deep learning models are used to combine the features extracted from residual blocks. The most inefficient features in the feature set were chosen using metaheuristic optimization. The complement rule was then used to combine inefficient features from the feature set into clusters. Consequently, efficient features were obtained, with an overall classification accuracy of 96.14%. The use of the complement rule method in the data set, along with the optimization methods, was shown to improve classification performance. This study is expected to help improve the efficiency and speed of mineral classification.

Interacted toxic mechanisms of ochratoxin A and tricyclazole on the zebrafish (Danio rerio)

Despite the current efforts to identify the mixtures of chemical pollutants, they are often “binned” into their corresponding pollutant groups. Limited studies have investigated complex mixtures of chemical pollutants co-occurring across different groups. The combined toxic impacts of several substances become a critical consideration in toxicology because chemical combinations can exert a greater deleterious effect than the single components in the mixture. In the current work, we assessed the joint impacts of ochratoxin A and tricyclazole on the zebrafish (Danio rerio) embryos and explored their underlying signaling pathways. Ochratoxin A displayed higher toxicity than tricyclazole, with a 10-day LC50 of 0.16 mg L−1, whereas that for tricyclazole was 1.94 mg L−1. The combination of ochratoxin A and tricyclazole exhibited a synergistic impact on D. rerio. The activities of detoxification enzymes GST and CYP450, as well as apoptosis-associated enzyme caspase 3, were distinctly changed in most individual and mixture exposures comparing to the untreated group. Upon both individual and mixture exposures, more dramatic variations were detected in the expressions of nine genes, such as the apoptosis genes cas3 and bax, antioxidant gene mn-sod, immunosuppression gene il-1β, and the endocrine system genes trα, dio1, trβ, ugtlab, and crh, compared with the untreated group. These findings suggested that the simultaneous exposure to low doses of mycotoxins and pesticides in food commodities was more toxic than predicted from the individual chemicals. Considering the frequent co-occurrence of mycotoxins and pesticides in the diet, this synergy should be considered in future assessments.

Age- and Sex-Specific Features of Biomarkers of Exposure and Adverse Health Effects in Children with Respiratory Diseases and Comorbidities Associated with a Combined Exposure to Airborne Chemicals

Introduction: Nowadays, the use of a system of exposure and effect biomarkers is highly relevant in assessing public health disorders associated with chemical exposure. The study of age and sex-specific biomarkers in risk-sensitive populations with certain types of functional disorders and diseases related to airborne chemical exposures helps improve the effectiveness of scientific and methodological support for activities of the bodies and organizations of the Russian Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing (Rospotrebnadzor) in establishing causes and identifying circumstances for the occurrence and spread of non-communicable diseases related to chemical pollution of the environment. Objective: To establish and age- and sex-specific biomarkers of exposure and its adverse health effects in children with respiratory diseases and comorbid conditions exposed to a combination of airborne chemicals. Materials and methods: The object of the research was the system of biomarkers of exposure to six substances and negative effects (eight indicators), substantiated in biomedical studies conducted by the Federal Scientific Center for Medical and Preventive Health Risk Management Technologies in 2021–2022 to establish adverse health effects of a combined exposure to multiple airborne chemicals emitted by metallurgical plants in children aged 4–7 years; the classifying criteria included sex, age, target organs and systems, and adverse effects. Results: The article gives a detailed description of age- and sex-dependent changes in biomarkers of exposure and adverse health effects in children. It also provides substantiation that the best (most informative) age for studying the levels of markers of exposure and effect in children with respiratory diseases and associated comorbidities is 4–5 years for boys and 6–7 years for girls. General patterns of changes in the levels of biomarkers in response to chronic exposure to airborne chemicals include an increase in the level of chemicals in biological fluids above the reference values, a growth of the spectrum, severity, and prevalence of changes relative to the physiological norm of biochemical parameters, and expansion of the spectrum of adverse health effects. Conclusions: Our findings can serve as a criteria basis for priority setting in order to objectify and improve the accuracy of hygienic assessments, increase the efficiency of predictive techniques of diagnosis, predict and prevent health risks in the populations sensitive to airborne industrial chemicals.