Metals In Organs Research Articles

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Distribution of Metals in Organs and Tissues of Cyprinus carpio L., 1758 from Kızılırmak

The bioaccumulation of heavy metals in the common carp Cyprinus carpio L., 1758 was monitored to assess the pollution status in Kızılırmak. The common carp samples were captured by local fishermen and were purchased from fish markets in Bafra. Liver, gill, stomach + intestine, skin and muscles of C. carpio were analyzed for Fe, Zn, Cu, Pb, Hg and Cd using an inductively coupled plasma mass spectrometry (ICP-MS). Metal concentrations in the common carp occurred in the order: Fe>Zn>Cu>Pb>Hg>Cd. The non-essential metals Cd, Hg and Pb in edible tissues of common carp were below the detection of limits. The muscle tissues had also the lowest concentrations for essential metals. Higher concentrations of Fe, Zn, Cu and Pb in C. carpio were liver > stomach + intestine > gill > skin > muscle, while the Hg and Cd levels were liver > gill > stomach + intestine > skin > muscle, respectively.

Toxico-pathological effects of heavy metals from industrial drainage wastewater on vital organs of small ruminants in Lahore.

Considering one health concept, human health is thought to be affected by many factors. Heavy metal toxicity is now gaining its place as one of the major factors contributing to detrimental outcomes for human health. The study encompassed to target sites close to the industrial area of Lahore where heavy metal levels are believed to be higher, as industrial waste is drained into the two main drains. Sheep and goats (n = 5 from each species) reared in the locality were included in the study, and effects of heavy metal toxicity were evaluated in the selected organs (intestine, kidneys, liver, and muscles) via histopathological examination along with residual concentration of these heavy metals in the aforementioned organs. Heavy metals chromium, copper, zinc, lead, iron, magnesium, manganese, and nickel were detected in sample of selected organs by atomic absorption spectrometry (AAS) along with digestion method. The findings of the study indicated a statistically significant difference of residual concentrations of almost all the selected elements in almost all the tissue samples between the two sites where the values of site 1 (close to the drain) were higher compared with site 2 (away from the drain). Similar trend was depicted in histopathological examination where a higher degree of tissue degeneration, necrosis, and hence organ damage was observed in tissue samples collected from site 1 compared with site 2.

Metal bioavailability in northern low-salinity water: Case study of lakes in the Kola region, Russia

This paper presents metal speciation calculations that are based on mathematical modelling of chemical reactions in natural waters. Metal concentrations (Hg, Cd, Pb, Ni, Cu, Al, Sr) were determined, and their speciation in water were calculated for 22 water areas in the Kola region. Meanwhile, the accumulation of metals in fish organs and tissues was studied (e.g. whitefish). The biogeochemical activity of metals determines the proportions of labile and non-labile speciation in water. In the distribution zones of non-ferrous industry effluents, metal aqua-ions prevail; during the distribution, the proportions change in accordance with the metal activity. The bioavailability of metal speciation is estimated depending on aqueous geochemical conditions and, accordingly, the speciation of metals (in situ), based on the original studies of the lakes of the Kola region in northern Russia. The connection among the metal contents in fish and water has been identified using multidimensional scaling and redundancy analysis techniques. Using the example of natural conditions in northern low-salinity freshwaters, it is demonstrated that labile Cd, Pb, Ni, Cu, Al, and Sr are the species most bioavailable and able to penetrate fish; meanwhile, the organic complexes of Hg, Pb, and Al have a greater affinity to accumulation in the gills. This study demonstrates the need to correct the approved water quality standards in Russia, taking into account the high bioavailability of metals in northern low-salinity waters.

Stabilization of heavy metals in sediments: A bioavailability-based assessment of carbon adsorbent efficacy using diffusive gradients in thin films

This study investigated the effectiveness of carbon adsorbents as remediation material for sediments contaminated with heavy metals and the feasibility of utilizing diffusive gradients in thin films (DGT) as a biomimetic tool to estimate the accumulation of heavy metals in Venerupis philippinaram (Manila clam). The results showed that carbon materials had significant inhibitory effects (14.0–53.0%) on the enrichment of heavy metals in organisms and the order of increasing overall inhibitory effect was: charcoal, peat, activated carbon, and biochar. There were significant correlations (P < 0.0001) between the four heavy metals accumulated in Venerupis philippinaram and those accumulated in DGT devices after 28 days in the laboratory. Observed concentrations of heavy metals enriched in DGT (5.4–42.0%) were less than accumulations in Venerupis philippinaram. The results of in situ DGT applications showed significant correlations between the amount accumulated in DGT and the acid-soluble portion in sediments for both Cu and Pb, with positive linear correlations and R-squares of 0.97 and 0.92, respectively. These results supported the notion that a DGT device can be used as a biomimetic tool that predicts and monitors the accumulation of heavy metals in aquaculture ponds. Future studies should focus on improving the stabilization of heavy metals in sediments using different types of carbon sorbents, as well as minimizing simulation deviations using DGT.

Resorption, mobilization and accumulation of metals in different parts of Vitis vinifera L.

This study aimed to determine the variation in metal resorption, mobilization and accumulation in various parts of Vitis vinifera L. In contrast to N and P, the metal resorption is undesirable for plants. Root, stem, tendril, leaf and fruit samples were collected in green and senescence periods. Metal concentrations were determined by ICP-OES. Resorption efficiency and proficiency values of metals were calculated. Results showed Cr toxicity in organs of Vitis vinifera. All the metals mobilized among organs. Except Mn and Pb, resorption occurred for metals in various organs. Results indicated that metals were resorbed from various organs and accumulated in other plant tissues, especially in roots and leaves. Mn and Pb weren't reabsorbed from any organ and tended to accumulate especially in leaves. Due to leaf abscission, high metal content in senescent leaves is good for growth of V. vinifera and harmful for sustainability of soil and ecosystems.

The Long-Term Effect of Petroleum-Derived Substances and Their Bioremediation on the Host Plant (Vicia faba L.) and a Herbivore (Sitona spp.)

The present study assessed distant-in-time effects of soil contamination with petroleum-derived substances (PDSs) (petrol, diesel fuel and used engine oil) and their bioremediation using ZB-01 biopreparation on the growth of broad bean, content of nutrients and heavy metals in plants, and feeding by imagines and larvae of Sitona spp. The results showed that even after 5 years from the moment of soil contamination by engine oil and diesel fuel, they negatively impacted the growth of broad bean plants. PDSs significantly modified the content of nutrients and generally increased the content of heavy metals in plant organs. These substances also negatively affected the feeding of adult Sitona spp., causing a reduction in the percentage of plants damaged by beetles, and a decrease in the surface of consumed areas on leaves. The ZB-01 biopreparation had a generally positive effect on the morphological features of plants, and its effect on the content of nutrients and heavy metals was variable, depending on the type of contaminant, the analyzed metals or nutrients, and the involved part of the plant. The biopreparation also inhibited the adverse effect of PDSs on the feeding by imago of Sitona spp.

Analysis of the impact of anthropogenic pollution on the organs and tissues of quail when using “Prodactiv Acid Se”

The results of studies showed that the use of "Prodactiv Acid Se" helped to reduce the negative impact of anthropogenic pollutants, which allowed to reduce the content of heavy metals in various organs and tissues to established MPC. However, it should be noted that quail slaughter products comply with safety indicators and can be used without restrictions.

Estimating seasonal variations of realistic exposure doses and risks to organs due to ambient particulate matter -bound metals of Delhi

This study aims to calculate deposition of PM2.5 -bound hazardous metals in different organs after inhalation of particulate matter for the Delhi (India), and to estimate risks to organs following inhalation. Bio-accessible fractions of three PM-associated carcinogenic metals (As, Pb &Cd) were calculated using the metal values in simulated lung fluids. Depositions of metals in different organs were calculated using an integrated model consists of HRT and PBPK models. The calculation indicates that the major or significant deposition of metal Pb occurs in tissues, such as bone, muscle and blood. Most of the depositions of Cd happens in lung whereas most of the depositions of As happens in lung, muscle and skin. Most of the deposition of studied metals was found in lung (45% for arsenic and 70% for cadmium of their bio -dissolved contents). The following order of depositions of metals in different tissues were found (from highest deposition to smallest deposition): As: Lung > muscle = liver; Pb: bone > blood > muscle; Cd: lung > intestine. The combined exposures of PM2.5 and its associated metals were found to give interaction-based hazard index greater than 1 for several months of the year, indicating a chance of health risk. Hazard quotient (HQ) <1 was seen for ingestion and dermal pathways, indicating no cause of concern. Findings indicate the need for doing periodic monitoring and estimating deposition doses and exposure risks of PM-associated metals to lungs and other organs for protecting human health.

Heavy metals (Cadmium, Mercury and Arsenic) accumulation in different organs of Sperata sarwari collected from Indus River, Head Taunsa, Dera Ghazi Khan, Punjab, Pakistan

This study was conducted to analyze the accumulation of cadmium, mercury and arsenic in different organs of Sperata sarwari. The fish were collected from Indus River, Head Taunsa, Dera Gazi Khan, Punjab, Pakistan. The organs of collected fish were separated and frozen at -20 oC. The organ samples were digested by using perchloric acid and nitric acid. The concentration of accumulated metals in organs was measured by using an atomic absorption spectrophotometer. The kidney was found most targeted organ for the accumulation of above mentioned heavy metals. All other organs also accumulate a significant amount of heavy metals. This study concludes that heavy metals of cadmium, mercury, and arsenic are found in the natural water and accumulate in different organs of Sperata sarwari. Keywords: Arsenic; Cadmium; Kidney; Mercury http://dx.doi.org/10.19045/bspab.2020.90153

Bioaccumulation of heavy metals in different organs of Labeo rohita, Pangasius hypophthalmus, and Katsuwonus pelamis from Visakhapatnam, India

The bioaccumulation of heavy metals (Zn, Pb, Cd, Co, Cu, and Fe) in fish tissues was determined using Atomic Absorption Spectrometer (spectra 220) and Mercury (Hg) content was estimated by using a mercury analyzer. Various organs (eye, gill, gut, gonad, liver, skin, and muscle) of three fish species, i.e., Labeo rohita, Pangasius hypophthalmus and Katsuwonus pelamis, from Visakhapatnam were analyzed. Young and aged fish were chosen based on their length: LR-32, LR-49 (Rohu); PH-33, PH-56 (Pangasius); and KP-18, KP-52 (Skipjack). In both the small and big size of L. rohita and P. hypophthalmus, the metal concentration was in the order Fe > Zn > Cu whereas Pb, Hg, and Co were below detectable limit (BDL). Concentrations in K. pelamis was Fe > Zn > Cu > Cd and Pb, Hg, and Co were BDL. In conclusion, the metal concentrations in the examined fish species available in Visakhapatnam fall below the maximum permissible limit (MPL) for human consumption recommended by FAO, WHO, MAFF, and EC.

Thallium in color tattoo inks: risk associated with tattooing.

Allergic reactions to metals and metal salts used in tattoo pigments occur surprisingly frequently. For this reason, this study focused on the determination of thallium (Tl) in the samples of color tattoo inks. These inks are commonly used in tattooing processes worldwide. The samples were analyzed with the use of differential pulse anodic stripping voltammetry. The stripping anodic peak current of Tl was linear over its concentration range of 0.5-6.0 μg/l, which corresponds to 2.45×10-9-2.94×10-8 M. The determined value of the limit of detection (LOD) was equal to 0.149 μg/l (7.29×10-10 M). The obtained results revealed a wide range of Tl contents in tattoo inks, i.e., 0.0029-0.4275 μg/g. The content of this metal varied substantially depending on the pigment used in tattoo inks. Thallium was identified and determined in all tested samples. Its content depends on the country of origin but it does not depend directly on the color. The lowest content of Tl was found in the pink ink and the highest in the violet ink (from Israel), and a similar content was also found in the yellow ink (from Israel). The use of colored inks in larger quantities (a dense pattern and a larger surface area covered) may potentially pose a health risk. The danger of Tl poisoning from tattooing depends on the type of the ink (color) and its origin. As Tl is not considered a micronutrient, introducing such a Tl content into the body may be associated with a potentially harmful accumulation of this metal in body organs, causing various types of ailments and toxic effects primarily on the nervous, skeletal and circulatory systems. The obtained results suggest that tattooists may be exposed to the toxic effects of Tl in tattoo inks. The analytical data presented in the paper may constitute the basis for determining the acceptable limits of toxic Tl contents in tattoo inks. Med Pr. 2020;71(4):405-11.

Spatial-temporal variations and trends predication of trace metals in oysters from the Pearl River Estuary of China during 2011–2018

Estuaries are often considered to be the filters of pollutants from the land-derived outflows of freshwater to open seawater. Oysters are efficient bioaccumulators of metals in the estuarine environment, however, little information is available on the long-term tissue variability of metals in a large dynamic estuary under complex urbanized and anthropogenic impacts. Thus, an eight-year biomonitoring study of metals (Ag, Cd, Cr, Cu, Ni, Pb, and Zn) in the oysters from 10 sites were carried out to reveal the highly spatial-temporal variations in the Pearl River Estuary (PRE) of China during 2011–2018. Cd, Cu, and Zn in oysters were significantly correlated with the dissolved metals in seawater. Geographically, Ag, Cd, and Cr were higher in the western sites, and Cu, Ni, and Zn were higher in the eastern sites. High seasonal variations of Ag, Cu, and Zn were found in the wet season. The calculated annual change rates (vc) of Cd, Cu, Zn, Ag, Pb, Ni, and Cr in the oysters were −1.1, −45, −48, 0.338, −0.216, −2.2, and −2.8 μg/g/y, respectively. If such decreasing rates of vc (or natural logarithm rates v) were maintained, Cd, Cu, Zn, Pb, and Ni in oysters from PRE would be expected to recover to the national 50% concentrations in years 2022 (2024), 2045 (2079), 2073 (2110), 2021 (2023), and 2019 (2020), respectively. Long-term series observations of metals in organisms reflected the real bioavailability of metals, pollution status, and trends for environmental management and control in a large dynamic and contaminated estuary.

Metal body burden and tissue oxidative status in the bivalve Venerupis decussata from Tunisian coastal lagoons

Coastal transitional waters are exposed to many anthropogenic threats. This study aims to assess the trace metals' pollution status of transitional waters by evaluating its biological effects in the clam Venerupis decussata. Among the studied sites along the Tunisian littoral, South Tunis and Boughrara were the most impacted, since clams from these two lagoons presented significant differences in: (i) trace metal contents, (ii) in-cell hydrogen peroxide, (iii) enzymatic and non-enzymatic defenses, (iv) damage to lipids and proteins, and (v) protein post-translational modifications. These changes related to evident histopathological traits. PCA showed a clear separation between the digestive gland and gills tissues and illustrated an impact gradient in Tunisian coastal lagoons. Water temperature was revealed as an added natural stressor that, when concurring with high pollution, may jeopardize an ecosystem's health and contribute to the accumulation of hazardous metals in organisms.

Distribution and bioaccumulation of heavy metal in water, sediment and fish tissue from the River Mahananda in Seemanchal zone, North Bihar, India

In the present study, distribution, and bioaccumulation of Cu, Zn, Cd, and Pb were analysed in water, sediment and freshwater fish tissues of Catla catla and Mystus seenghala which were seasonally collected from River Mahananda in Seemanchal zone. The results showed that except Pb, level of Cu, Zn and Cd in water were below than allowance limit of WHO (2008), while level of Cu, Zn and Cd in sediment was higher than a toxicity reference value (TRV) recommended by USEPA (1999), except Pb. Heavy metal concentration in water and sediment were recorded in the order: Cu>Pb>Zn>Cd and Zn>Cu>Pb>Cd, respectively. The seasonal variation of this metal in water was in the sequence: rainy>winter>summer, and in sediment summer>winter>rainy. Bioaccumulation of studied metal by different tissues of M. seenghala was maximum than C. catla , and found that following order of magnitude: liver>gill>muscle. The order of studied metal concentration in liver Zn>Pb>Cu>Cd, in Gills Zn>Pb>Cu>Cd, in muscle Zn>Pb>Cu. Pb was only metal whose concentration was higher than FAO, FAO/WHO and WHO standards in all examined tissues of both species . Bioaccumulation of Pb in different tissues of both fishes was observed maximum in summer followed by winter and rainy (monsoon) seasons. Bioaccumulation factor (BAF) of all four metals in organs of M. seenghala was higher than C. Catla. Metal index value (MI) > 1 for Cd and Pb in water suggests that worse quality of water. The levels of heavy metals accumulated in two fishes might be due to the increase in agricultural influx water, domestic wastes, poultry farm, municipal and some other anthropogenic activities. This study shows that River water in the studied zone is a serious concern of human health and selected fishes do not feed directly without proper treatment of the riverine ecosystem, and potential danger may occur in the future.

Seasonal distribution of cadmium, lead, nickel, and magnesium in several tissues of mussels from the Algerian coasts.

This study aims to investigate the distribution of heavy metals (Cd, Pb, Ni, and Mn) in different organs of two marine mussel species, Perna perna collected from Figuier site and Mytilus galloprovincialis sampled from Sercouf and Algiers port sites of the Algerian coast. Thirty individuals (>5cm length) were seasonally sampled over a 1-year period from each site, and condition index (CI) and gonado somatic index (GSI) of mussels were calculated. The gill, digestive gland, rest of soft tissues, and gonad were accurately isolated and heavy metal contents were analyzed by ICP-MS. Heavy metal results, expressed on μg/g dry weight, ranged from 0.1 to 2.6 Cd, 0.1 to 17.15 Pb, 0.36 to 25.7 Ni, and 3.68 to 74.76 Mn. Thus, typical distribution of studied metals in various organs of mussels was found. In fact, the digestive gland followed by gill revealed significantly high metal concentrations. However, gonad showed low heavy metal contents. Different patterns of heavy metal distribution in various organs of mussels were found at the three sampling sites. High levels of Cd, Pb, Ni, and Mn were detected in mussels of Sercouf, Algiers port, and Figuier sites, respectively. According to the Algerian and European norms, mussels collected from all sites were healthy except those of Algiers port sampled in autumn and winter seasons where lead contamination was found.

Прижизненная оценка накопления тяжелых металлов в организме сельскохозяйственных животных (обзор)

In order to prevent the development of pathological processes in the body of farm animals, the intravital determination of the content of heavy metals in organs and tissues is relevant. The state of the solution to this problem is considered. A description is given of various approaches that allow testing the content of heavy metals in animals, assessing and adjusting the environmental safety of livestock products.

Particulate matter exposure disturbs inflammatory cytokine homeostasis associated with changes in trace metal levels in mouse organs

Few studies have focused on the impact of particulate matter (PM) exposure with respect to the relationship between PM-induced inflammation and the levels of trace metals in tissues and organs. In this study, C57BL/6 male mice were exposed to ambient air alongside control mice breathing air filtered through a high-efficiency particulate air (HEPA) filter. In both groups, mRNA levels of pro- and anti-inflammatory cytokines were measured after 4, 8 and 12 weeks together with the trace metal contents of the lungs, heart, liver, hippocampus and blood. PM exposure resulted in a general upward trend in the levels of pro-inflammatory cytokines in lung, heart, liver and hippocampus. By contrast, IL-10 mRNA expression varied depending on the organ, with a continuous upward trend in heart and liver and an up-regulation at 8 weeks followed by a down-regulation at 12 weeks in lung and hippocampus. The disturbed homeostasis of inflammatory cytokines was accompanied by changes in trace metal levels in the mice. These alterations may have constituted a compensatory effect conferring protection from inflammatory damage. However, prolonged PM exposure finally resulted in the deficiency of several essential trace metals in the lungs and hippocampus, which may have contributed to the observed histological changes typical of an inflammatory response.

Assessing the association and predictability of heavy metals in avian organs, feathers, and bones using crowdsourced samples

Birds are bioindicators for research on the relationship between environmental heavy metal concentration levels and accumulation levels in bird tissues. We use roadkill samples, collected by citizen science participants, to investigate the accumulation levels and associations of seven heavy metals in internal organs (heart, liver, and kidney), feathers (primary and breast), and bones (sternum and femur) of two focal species, Amaurornis phoenicurus and Gallinula chloropus. We found that heavy metal accumulation varied by target tissue, and that variables are associated with bird species and heavy metal type. Although Zn and Cu were highest by concentration among both species, Cu was mostly accumulated in internal organs, As in feathers, and Pb in bones. Concentrations of As, Ni, and Pb in feathers of both focal species were lower than those reported in literature, whereas Cd and Cr were above toxic levels. The results also showed that spatial correlation for heavy metal concentration among bird tissues were weaker than non-spatial correlation, suggesting low spatial autocorrelations and variability. In addition, multiple regression analysis revealed significant correlation for Cr, As, and Pb estimations in A. phoenicurus heart, sternum, and kidney, respectively; and potentially Cr in G. chloropus femur by using feathers. These results support the feasibility of using feathers as indicators of As, Cr, and Pb heavy metal contamination to enhance our understanding of heavy metal accumulation in birds, although caution is required for feather-based estimations of Cd, Cu, and Ni concentration.

Bioaccumulation effects of microplastics and heavy metals pollutants in the dominant freshwater fish species in the Longkou entry of Raohe River, Lake Poyang Basin

水体生态环境中的微塑料与重金属污染问题正日益受到热切关注.为探讨微塑料与重金属对水产品的复合生态效应，选择鄱阳湖-饶河段优势淡水鱼为研究对象，对鱼体内微塑料及重金属Cu、Cd、Pb、Zn、Cr等元素的生物累积作用进行分析与评价.结果表明：调查区域水环境中微塑料的丰度范围10~64 items/L，平均值38.56 items/L.8种淡水鱼消化道微塑料丰度范围为1.21~9.11 items/g，平均丰度为5.40 items/g；鳃部丰度范围0.61~5.00 items/g，平均丰度为2.87 items/g；微塑料类型主要有碎片类、纤维类、薄膜类和颗粒类4种，其聚合物成分主要为聚乙烯（PE）、低密度聚乙烯（LDPE）、聚丙烯（PP）和聚苯乙烯（PS）；颜色以透明及彩色为主；微塑料粒径范围为0.01~9.5 mm，粒径>0.5 mm的微塑料所占比例为79.07%，鱼体内与其生存水环境中微塑料的丰度特征（形态、粒径、颜色和聚合物类型组分比例）具有一定相似性.各鱼类对微塑料的累积系数（BAF）平均值为178.29，不同鱼类累积微塑料的能力大小次序为：乌鳢（Channa argus）、黄颡鱼（Pelteobagrus fulvidraco） > 鲦鱼（Hemicculter leuciclus）、草鱼（Ctenopharyngodon idellus）、鲶鱼（Silurus asotus） > 鲤鱼（Cyprinus carpio）、刀鱼（Coilia ectenes）、鲫鱼（Carassius auratus）.鱼体肌肉组织内重金属Cu、Cd、Pb、Zn、Cr的平均含量分别为4.27、0.13、0.28、11.73、0.53 mg/kg，均符合无公害水产品的要求且低于人体消费卫生标准，属于安全食用范围；鱼类对5种不同重金属的累积能力大小次序为Zn > Cu > Cd > Pb > Cr，不同鱼类对不同重金属的累积能力具有差异性.通过扫描电镜（SEM）与能谱分析（EDS）检测到各类型微塑料表面均有上述5种重金属元素，证实微塑料可能成为重金属的附着载体，相关性分析表明微塑料与Cu呈极显著相关，与Cd、Pb均呈显著相关；微塑料的存在一定程度上会增强Cu、Cd与Pb的累积效应，并可能产生复合污染效应.;Pollution of microplastics and heavy metals in aquatic eco-environment is attracting more and more attention. In the present study, in order to explore the bioaccumulation characteristics of microplastics and heavy metals in organisms, we selected eight dominant freshwater fish species in the Lake Poyang and Raohe River as the research materials. The concentrations of heavy metals (i.e. Cu, Cd, Pb, Zn and Cr) and microplastics in the fishes were measured and analyzed. The results indicated that the abundance of microplastics in water environment ranged from 10 to 64 items/L, with an average of 38.56 items/L. The abundance of microplastics in the digestive tract of the eight fish species ranged from 1.21 to 9.11 items/g, with an average of 5.40 items/g, while the abundance of microplastics in gills of fish varied between 0.61 and 5.00 items/g, with a mean of 2.87 items/g. There were four types of microplastics in fishes including debris, fibers, films and pellets. The polymer components were mainly polyethylene (PE), low-density polyethylene (LDPE), polypropylene (PP) and polystyrene (PS) that were mainly transparent and colorful. The particle size of microplastics ranged from 0.01 to 9.50 mm, and 79.07% of the microplastics had particle size>0.5 mm. The abundance characteristics (i.e. types, particle size, color and polymer composition) of microplastics in fishes were similar as those in water environment. The averaged bioaccumulation coefficient of microplastics in fishes was 178.29. The bioaccumulation ability of microplastics in fishes was ordered as follows:Channa argus, Pelteobagrus fulvidraco > Hemicculter leuciclus, Ctenopharyngodon idellus, Silurus asotus > Cyprinus carpio, Coilia ectenes, Carassius auratus. The contents of heavy metals including Cu, Cd, Pb, Zn and Cr in the muscle tissues of fishes were 4.27 mg/kg, 0.13 mg/kg, 0.28 mg/kg, 11.73 mg/kg and 0.53 mg/kg, respectively, which meet the requirements of pollution-free aquatic products and are lower than the health standards for human consumption. The enrichment ability of the fishes to the five heavy metals was ordered as follows:Zn > Cu > Cd > Pb > Cr. Different fish species showed different ability on the accumulation of a specific type of heavy metals, which is closely related to their feeding habits. The five heavy metals were detected on the surface of various microplastics by using Scanning Electron Microscopy (SEM) and Energy Dispersive Spectroscopy (EDS) methods, suggesting that microplastics may be the attachment carrier of heavy metal pollutants. Correlation analyses showed that the concentration of microplastics in fishes were significantly correlated with that of Cu, Cd and Pb, probably because that the presence of microplastics enhances the cumulative effects of Cu, Cd and Pb, and lead to the compound pollution effects.