Presence Of Heavy Metal Contaminants Research Articles

Determination of some heavy metals and physicochemical properties in contaminated soils of open waste dumpsite in Awka, Anambra State

The current study was designed for the assessment of cadmium, chromium, lead, nickel, zinc and manganese and some physicochemical properties of soils collected from an open dumpsite in Awka, Nigeria. Soil samples at the depth (0-20 cm) were randomly collected at the dump field and were analyzed for physicochemical parameters and heavy metals using standard analytical methods. The results show that the main dumpsite had a high sand content (91.48% ± 0.26%) with a low silt 4.07% ± 0.03% and clay 4.65% ± 0.00%. The pH of the dumpsite soils was 6.07 ± 0.04 which is an acidic pH. Organic matter (%) and organic carbon (%) were 3.84 ± 0.06 and 2.23 ± 0.04 respectively. The EC (µS cm-1) was 476.9 ± 0.00 while the ECEC (cmol/kg) 18.93 ± 0.04. The bulk density (g cm-3) was 1.32 ± 0.00 and the porosity (%) of the dump soil was 41.40 ± 0.00. Total metal concentrations of Cd, Cr, Pb, Ni, Zn and Mn were also analyzed and the concentrations of the heavy metals at dumpsitewas obtained (28.35 ± 0.21 to 149.10 ± 0.01 mg/kg). Metal contamination at dumpsite was in the order of Mn ˃ Zn ˃ Pb ˃ Cd ˃ Cr ˃ Ni. The study evidently indicates the presence of heavy metal contamination in the dumpsite even though some of them fell below the critical permissible concentration level. However, it is their accumulation and persistence in the soils of the dump site that may be a cause of concern for their surrounding environment and organisms.

In Vivo Evaluation of Heavy Metal Decontaminated Marine Macroalgae (Ulva lactuca L.) Using Bilimbi (Averrhoa bilimbi) Juice and Its Potency As Nephroprotector

Ulva lactuca is a functional food ingredient with high antioxidant content. The presence of heavy metal contaminants in natural Ulva lactuca needs to be eliminated. Ulva lactuca was investigated for its potential as a nephroprotector in female Wistar rats. The study assessed Blood Urea Nitrogen (BUN) levels, creatinine levels, and kidney histopathology. The experiment included a Group I (control), Group II (administered 1000 mg/Kg BW/day of natural Ulva lactuca), and Group III (administered 1000 mg/Kg BW/day of heavy metal decontaminated Ulva lactuca using bilimbi juice). After 30 days of oral treatment, no significant differences were observed in BUN levels before and after treatment. However, significant variations were found in Group III compared to the Group I creatinine levels after treatment. Both natural and heavy metal decontaminated Ulva lactuca showed no adverse effects on kidney function. Notably, heavy metal decontaminated Ulva lactuca exhibited improved kidney histopathology, suggesting its potential as a nephroprotector. Further research is needed to explore its broader applications in promoting kidney health.

Geochemical Characterization of Sediments from the Bibione Coastal Area (Northeast Italy): Details on Bulk Composition and Particle Size Distribution

The aim of this study is to characterize the sediments of the coastal area of Bibione and the Baseleghe Lagoon (Province of Venice, Italy). The characterization includes the assessment of particle size distribution, carbonate content, composition of major oxides, and heavy metal concentrations. The results indicated that the sediments primarily consisted of carbonate but showed significant heterogeneity in both composition and grain size within the different environments of the Bibione coastal area. Carbonate content decreased from the beach to the seabed, which does not appear to be solely influenced by variations in sediment grain size. This finding has potential implications for the Bibione area’s coastal erosion processes and sediment quality. Significant differences in grain size and composition were observed between the mouth and the inner region in the lagoon area. The textural characteristics of the sediments in the inner part of the lagoon make it particularly vulnerable to pollution, with potential environmental and economic consequences. Different pollution indices have indicated the presence of heavy metal contamination in both the coastal and, especially, the lagoon area. The source of these metals appears to be predominantly natural, although there may be some contribution from anthropogenic sources for certain metals. However, the comparison of the metal concentrations in the samples with the limits set by the Italian legislation showed that the sediments were still of good quality.

Penilaian Risiko Kesehatan Berbasis Keamanan Pangan Akibat Paparan Logam Berat dalam Biji Kedelai pada Sistem Pertanian Berkelanjutan

Heavy metals rank high among the hazardous contaminants in the fresh produce of plant origin, originating from growing media and contaminated air environments. Plants absorb heavy metals depending on the availability of heavy metal ions in the soil and anthropogenic activities using agrochemicals. The entry of heavy metals into the human body through the tropic level can cause various chronic diseases; so regular monitoring of the presence of heavy metal contaminants in fresh products of plant origin is critical. Testing for heavy metal contaminants in plant tissues using an atomic absorption spectrophotometer – flame. The research results showed that the heavy metal contaminant Cd was not detected in the pre-cultivated agricultural land. In plant tissues, Pb in the pre-cultivated land was detected at 49,271 ± 0,423 mg kg–1, while Cu in the pre-cultivated land was 87,369 ± 0,867 mg kg–1, and in soybean seed tissue 12,571 ± 0,698 mg kg–1. Based on research results for Cu contaminants, show that a THQ value of 0.001 means that it does not have the potential to suffer chronic non-carcinogenic health consequences. This situation is reinforced by the THQ < RfD value means that stakeholders to be vigilant about reducing Cu contaminants on agricultural land, by consistently implementing good agricultural practices.

Application of Adsorption Thermodynamics and Column Studies for Pb2+, Cd2+ and Mn2+ Ions Removal in Multicomponents Model Solution Using Low-Cost Bentonite Clay Adsorbent

The presence of heavy metal contaminants in wastewater effluents has become a great threat to living creatures and the environment. In this study, the application of thermodynamics and column studies for Pb2+, Cd2+ and Mn2+ metal ions removal in multicomponent aqueous solution using low-cost bentonite clay was investigated. Evaluation of enthalpy (∆Ho), entropy (∆So) and Gibbs free energy (∆Go) revealed that heavy metals adsorption was endothermic and spontaneous as temperature increased from 30 to 65 oC. The column performance was determined at 0.05m adsorbent bed depth, 0.023 and 0.04 mL/s flow rates. The influent concentration was 10 and 50 ppm while the breakthrough time was between 0.83 and 8 hr. The maximum uptake of metal ions was 2.2 mg/g for Pb(II), Mn(II) was 0.4 mg/g and 1.7 mg/g for Cd(II). The result showed the potential of bentonite clay as a candidate for toxic metal ions adsorption in wastewater.

HEAVY METAL POLLUTION FROM TOURISM IN THE ALTAI MOUNTAINS

The paper presents information about soil pollution with heavy metals from tourism in the Altai Mountains of Kazakhstan and the Altai Mountains of Mongolia. During the pandemic, traveling to the Altai Mountains became a trend became trend for domestic tourism in both countries. Bad infrastructure is here. Therefore, tourist vehicles have damaged the surface of the soil by driving on dirt roads, building new branch roads, approaching snow-capped peaks, and driving through swampy areas. The authors hypothesized that the soil is likely to be contaminated with heavy metals, mostly due to heavy vehicles with large motors. As a result, compared to clean soil, the lead levels increased by 12.5–15.8 mg/kg, nickel for 16.1–33.7 mg/kg, zinc for 15.6–17.1 mg/kg and the amount of heavy metals increased by 2–4 times. The results of the experiment confirmed the presence of heavy metal contamination in disturbed soil. But this pollution has not exceeded the standard level. Because contaminated soils are washed away by snow and rain.

Pollution Characteristics, Spatial Distribution, and Evaluation of Heavy Metal(loid)s in Farmland Soils in a Typical Mountainous Hilly Area in China.

Heavy metal(loid)s pollution in farmland soil is not only a serious environmental but also a human health-related issue. Accurate understanding and evaluation of heavy metal pollution levels in the soil are very important for sustainable agricultural development and food safety. Mountainous and hilly areas have the dual functions of industrial development and agricultural production, and the farmland soil in these areas is more susceptible to heavy metal pollution. In this study, the single factor index, Nemerow index, geo-accumulation index, enrichment factor index, and potential ecological risk indices, which are mainly used to assess the contamination and risk of heavy metals in farmland soils. The sources of heavy metals in agricultural soils of the study area were analyzed using correlation analysis and principal component analysis. Finally, geostatistical methods were used to map the heavy metal contamination of farmland soils. An average concentration of all heavy metals (except As) in farmland soils of the study area exceeded the corresponding background values, as indicated by the obtained results. The results of the principal component analysis showed that the heavy metal sources in the soils of the study area can be classified into two groups. The five pollutant index methods all showed the most serious Hg pollution in the study area. The integrated pollutant mapping results showed that the risk of heavy metal pollution in the study area was mostly moderate, except for the western and central parts of the region. This study enhances understanding of the pollution levers of heavy metals in Yiyuan farmland soils, and also can facilitate the monitoring of heavy metal contaminants at the primary stage of the food chain and assess the risk of the presence of heavy metal contaminants in food, thus improving the health of the residents.

Edukasi Bahaya Logam Berat dalam Tubuh dan Sumber Kontaminannya

Contamination in aquatic systems has an indirect impact on survival. One type of contamination of the aquatic system is the presence of heavy metal contamination. Continuous exposure to heavy metals can cause kidney, liver, neurological disease, vascular disease, and cancer. Sources of heavy metals come from the mining industry, paint industry, use of pesticides, etc. To provide insight to the public, it is necessary to conduct education about the sources of heavy metal contamination and its impact on the body. The implementation of this community service activity is in the form of webinars for active students. A total of 63 students participated in this educational activity. The selection of students as the target community is based on their role in society. The methods used in this activity include presentations by lecturers and students, as well as discussions and questions and answers. To measure knowledge, pre-test and post-test were conducted.

The Effect of Zinc Speciation and Its Concentration on Bioaccumulation in Pomfret (Colossoma macropomum) and Sepat Fish (Trichogaster Trichopterus)

Heavy metal Zinc is still a pollutant from various industrial and domestic activities whose waste is directly dumped into the waters. The presence of biota in the waters can be used as a bioindicator to identify the presence of heavy metal contaminants. The kinetics of the Zinc bioaccumulation process through the freshwater route using pomfret (Colossoma macropomum) and sepat fish (Trichogaster trichopterus) as bioindicators have been investigated by analyzing the effect on variations in concentration and pH. This research was conducted by determining Zinc speciation's effect and concentration on the bioaccumulation process. The results showed an increase in concentration would also increase the rate of uptake and elimination rate of Zinc by pomfret and sepat, obtained concentration factors (CF) at variations of Zinc concentration in pomfret was 2.56 - 22.97 mL.g–1 and 2.14 - 56.87 mL.g–1 in sepat fish. While the value of the concentration factor (CF) in the variation of pH for pomfret is 0.65 - 13.15 mL.g–1 and for sepat fish is 0.93 - 15.29 mL.g–1, and ZnCl42– was the dominant species containing Zn in most of the electrolytes in fresh water and from each concentration variation. This method is expected to provide information that can be used for environmental studies and against toxic effects for food safety. HIGHLIGHTS The kinetics of the Zinc bioaccumulation process through the freshwater route as bioindicators have been investigated This research was conducted by determining Zinc speciation's effect and concentration on the bioaccumulation process Provides information on the accumulation of Zinc in Pomfret ( macropumum) and Sepat Fish (T. trichopterus) to be used as an environmental study and for food safety purposes GRAPHICAL ABSTRACT

Determination of Heavy Metals and Ascorbic Acids in Some Soft Drinks Sold Within Bauchi Metropolis, Nigeria

Soft drinks are consumed in Nigeria due to their easy availability, distinct taste and ability to quench thirst. However, the high demand can reduce production quality due to possible heavy metal contamination, leading to human poisoning and death. This study evaluated some components of 100 soft drinks in Nigeria and investigated the presence of heavy metal contaminants and ascorbic acid concentrations. The presence of Arsenic, Cadmium, Lead, Manganese, Nickel and Chromium in soft drinks was determined using an atomic absorption spectrophotometer; the Ascorbic acid was determined using the titrimetric method. The analysis of the soft drink revealed that Arsenic was present in all the samples in a concentration ranging from 0.017 to 0.33 mg/l; Cadmium - 0.027 to 0.160 mg/l; Lead - 0.046 to 0.109 mg/l; Manganese - 0.036 to 0.116 mg/l; Nickel - 0.002 to 0.110 mg/l; Chromium - 0.057 to 0.122 mg/l. The attention of ascorbic acid ranged between 4.03 to 7.2 mg/100 ml. Compared to WHO standards, the levels of the heavy metal contaminants were above the tolerated limits for good quality drinking water in most samples. Moreover, the ascorbic acid values in this analysis were lower than those the manufacturers reported. Therefore, the National Health Surveillance agency should monitor ascorbic acid. These results suggest that soft drinks in Nigeria may be contaminated with heavy metals, which constitute a significant public health problem. Quality control is recommended during production, especially during sterilization and purification steps.

Trend of heavy metal contamination: A case study on the soil of Amassoma community, Bayelsa state of Nigeria

Presence of heavy metal contamination in agricultural lands, even at low levels is not desirable for human and animal health. Six soil samples were taken from three locations in Amassoma community in Bayelsa state in the months of April from the year 2019 to 2021. These samples were taken from the rhizosphere of pawpaw tree and scent leaf from the depth of 0-30 cm Samples were prepared by wet-ashing in line with the method defined by Smith 1972 and subjected to Atomic Absorption Spectrophotometry (AAS) and readings analysed with SPSS V.23 and IBM Instat GraphPad Prism V.3. Unpaired t test and trend analysis (graph, moving averages and slope)was used to ascertain significant difference between the yearly means and WHO limit at P<0.05, and trends of heavy metal contamination over the study period respectively. Increase in contamination of Lead (Pb), Cadmium (Cd), and Nickel (Ni) from 2019 to 2021 was revealed as 0.050 mg/kg-1 year-1, 0.005 mg/kg-1 year-1, and 0.063 mg/kg-1year-1 respectively. There was no reported increase in Zinc contamination (0.00 mg/kg-1year-1). Yearly analysis revealed statistically significant differences in observed heavy metal concentrations to that of the WHO limit (p<0.05). The 2-tailed p-value between the means of heavy metals studied and that of the WHO limits were all significantly different. Recommendations are that more researches be conducted to determine heavy metal accumulations in soils in Amassoma and other communities in Bayelsa state Nigeria. Government effort is required to initiate concerted remediation processes of the reported heavy metals to curb future health dangers.

ANALISIS CEMARAN LOGAM BERAT KADMIUM (Cd) DALAM JAMU PEGAL LINU DENGAN METODE SPEKTROFOTOMETRI SERAPAN ATOM (SSA)

Pegal linu traditional medicine is one of tradisional medicine that are in great demand by the community, such as in the district of Mranggen, Demak, as much as 66,50% of the people consume pegal linu traditional medicine. One of the security aspects that need to be considered in traditional medicine is the presence of heavy metal contamination. The research aims to determine the levels of Cd heavy metals in pegal linu traditional medicine with capsule dosage forms that are based on the district of Mranggen, Demak are in accordance with the regulation of BPOM RI in 2014 regrading heavy metal contamination in traditional medicines, ≤ 0,3 mg/kg. This research use explorative experimental, including : sampling, sample preparation used wet closed destruction method with HNO3 and H2SO4 (3:1) of the destruction solution in the Kjeldhal flask, qualitative analysis of Cd with color test and Cd quantitative analysis using Atomic Absorption Spectroscopy (AAS). The results of the quantitative analysis in this study did not show the metal content of Cd, this was due the small Cd content in the sample. Quantitative analysis shows that the Cd level in 12 sampels of pegal linu traditional medicine circulating in the distric of Mranggen, Demak exceeded the threshold of heavy metal contamination determined by BPOM RI in 2014 with the highest average levels of 18,86 mg/kg and the lower average levels of 7,38 mg/kg.

Presence of multidrug resistant bacteria in Hurricane Ida overtop sediments in Southeast Louisiana, USA

AbstractOn August 29, 2021, Hurricane Ida made landfall as a category 4 hurricane, bringing a torrent of wind, rain, and storm surge to Southeast Louisiana. This hurricane brought several feet of sediment into the residential areas of southeast Louisiana affecting homes and businesses. The sediment contains industrial waste and sewage sludge. A study was conducted to find the presence of antibiotic‐resistant bacteria (ARB) in the sediments. The results of this study show the presence of human polyomavirus BK in the sediments indicating the presence of human feces. The sediment also showed high levels of antibiotics such as tetracycline and sulfonamide. Presence of many multidrug resistant bacteria were found in the sediments along with the presence of various antibiotic resistance genes (ARGs) such as sul1 and sul2 for sulfonamide resistant and tetA gene for resistant to tetracycline. The heavy metal analysis revealed an elevated presence of heavy metal contamination.

Meridionalization as a Possible Resource for Fisheries: The Case Study of Caranx rhonchus Geoffroy Saint-Hilaire, 1817, in Southern Italian Waters

Climate change affects the shift range distribution of species, especially among mobile species, and this phenomenon can alter ecosystems and impacts human activities. Fishing is an anthropic activity that undergoes the effect not only of the introduction and increase of non-native species but also of native thermophilic ones. Some of these species can become a commercially exploitable resource. However, this information is often obscured by the negative effects these species can cause to the environment. We investigated how the thermophilic species Caranx rhonchus, neglected in Italy, could become a relevant resource. We studied the nutritional profile and the presence of heavy metal contamination and compared these traits with those of a similar common Mediterranean species, namely Trachurus trachurus. The proximate composition was determined following the AOAC procedure, while the fatty acid profile was determined by GC/MS, and the mineral component was obtained by mass spectrometer (ICP-MS). Caranx rhonchus is a nutritionally good species, although it is little consumed and exploited. Increasing the market supply with new commercially exploitable emerging species would benefit local communities and the environment. Therefore, it is necessary to investigate how a shift of the range caused by climate change can provide benefits within the human dimension.

ISOLATION, IDENTIFICATION, AND METAL RESISTANCE TESTING OF SOIL FUNGI (RHIZOSPHERE) FROM BANGKA TIN POST-MINING

The ecological impacts of tin mining activities in the Bangka island is the presence of heavy metal contamination that accumulated in the environment. One of the heavy metals that was often found in post-tin mining areas is lead (Pb). Mycoremediation is a method that can be used to reduce lead pollution in post-tin mining areas. This study aimedto isolate, resistance test and identify to Pb-resistant soil fungi (rhizosphere) in the post-tin area of Bangka. The research methods included isolation, test of fungal resistance to Pb metal (Control, 150ppm, 250ppm, 350ppm, 500ppm, 1,000ppm, 5,000ppm and 10,000ppm), macroscopic and microscopic identification. The results showed that 9 isolates tested, there were 6 isolates that were resistant to Pb up to the concentration of 5,000 ppm, namely isolates I1(Rhizoctonia), I2(Penicilllium sp1), I5(Papulaspora), I6(Penicillium sp2), I7(Penicillium sp3) and I9 (Sclerotium). Three isolates of soil fungus were not resistant to Pb up to a concentration of 5,000 ppm, namely isolates I4 (Sclerotium), I8(Microsporum), and I10(Cladosporium). All isolates did not grow anymore at a concentration of 10,000 ppm of Pb.

The effect of heavy metals on the enzymatic activity of the soils of Sumgait

The article is devoted to the study of the effect of heavy metals on the enzymatic activity of gray-brown soil in Sumgait. It was found that soil contamination with heavy metals leads to a significant decrease in the activity of microorganisms, including cellulosedecomposing ones. According to the inhibitory effect on the number of cellulosedecomposing microorganisms, metals can be arranged in a row: Рb < Сu < Zn. The decrease in cellulose-decomposing activity under the influence of high doses of Сu was 51%, Zn – 45%, Pb – 54%. A significant decrease in enzymatic activity was found in the presence of heavy metal contamination. With an increase in the amount of lead in the soil, a decrease in the activity of invertase was observed, at the same time, the greatest response to soil contamination with lead was found in the catalase enzyme. Thus, in comparison with the control, an increase in the activity of the catalase enzyme in the presence of lead in the soil occurs at a concentration of 1 MAC, which is more than 33%. A further increase in the values of catalase activity by more than 2.0 times is detected when the lead content in the soil is about 4 MAC. This allows the catalase activity of soils to be used as an indicator of soil contamination of the city of Sumgait with heavy metals, including lead.

The chemical composition and heavy metal content of sesame oil produced by different methods: A risk assessment study.

The oil was extracted from sesame seed with two extraction methods. Traditional (Ardeh oil) and industrial method (cold pressing method: virgin and refined sesame oil) oil extraction was studied to compare the quality and heavy metal content of extracted oils. The chemical properties (fatty acid composition, peroxide, anisidine, acid values, and TOTOX) and heavy metal contents were investigated. The Hazard Quotient (HQ) and Hazard Index (HI) of heavy metal intakes were calculated. The results demonstrated that the predominant fatty acid in oil samples was oleic, linoleic, palmitic, and stearic acids. It was indicated the peroxide, anisidine, acid values, and TOTOX of oil samples were as the order of Ardeh oil > virgin sesame oil > refined sesame oil. The reduction pattern of Pb > Zn >Cu > Cd >As was reported in sesame seed. Although the oil refining had been greatly reduced the Pb of oil sample, but it had yet been much higher than the permissible levels set by Codex Alimentarius. The HQ and HI of all heavy metals were less than one, but they were higher in Ardeh oil compared to others. It is necessary to monitor the presence of heavy metal contaminants and the quality of imported sesame seeds prior to oil preparation.

Ground Water Contamination: Effects and Remedies

Studies on “ground water contamination : effects and remedies” have been conducted, in the light of these, field work studies in Obudu and Obanliku local Government Areas of Cross River State, South Eastern Nigeria, was conducted. Fifteen (15) locations of water for drinking and other domestic uses were carefully studied in the area, with their surface to water depth values recorded. Five(5) of the locations were at surface saturated water depressions(SWD), seven(7) were Hand dug wells(well), while three(3) were bore holes(BH). The physiochemical composition data compared with world Health Organization (WHO) standard shows that, the bore water was safer for drinking than the hand dug wells and surface water in saturated water depressions. Coliform count unite per 100ml of water, were detected in most of the locations in the saturated water depressions and hand dug wells, showing evidence of biogenic interference with the water. Coliform count unite per 100ml of water was not detected in any of the three bore holes, probably due to their depth distance from Biogenic activities. Phosphate and Nitrate levels were significantly above WHO standard in saturated water depressions and Hand dug wells, probably due to erosional and leaching actions of inorganic fertilizers from farm lands and waste from near dump site. It is important to note that most water borne diseases are as a result of ground water communication with contaminant, such as heavy metals, leachate from dump sites, pollutants from inorganic fertilizers, pith toilets sea water intrusion etc., most boreholes are contaminated by these processes. This is one of the reasons for the increase in the rate of cancer in most developing countries. Hence, heavy metals are known to be carcinogenic to the human cells, and also can cause mutation. The remedies to these include:
 
 The process of exploiting and storing ground water should be done with all safety precautions, such as making sure biochemical parameters in water are in line with WHO standard
 Thorough biochemical analysis and test for the presence of heavy metal contamination and coliform count and other contaminants should be done on ground water, before use for domestic and industrial purposes.
 Surface depth measurement of recharge zones in boreholes should be carried out to ensure that borehole water is from confined aquifers that are safe for domestic and industrial uses.
 Proper waste disposing system such as engineered toilet pits, engineered dump sites and effective management of electronic waste should be monitored and implemented
 Where the purity of the water is not satisfactory, such water should be properly treated before used for drinking and other domestic purposes.

Heavy metals pollution of Kotlin Island in the Gulf of Finland

The current environmental state of Kotlin Island and coastal areas reflects the negative impact of industry, transport and urban utilities that has lead to increased heavy metal content in soils, in terrestrial and aquatic vegetation and in the water of the Gulf of Finland. Based on the analysis of pollutant metals in roots and shoots of native plants grown on Kotlin Island, species with high metal-accumulating capacity have been identified. Of these, there were dandelion and coltsfoot demonstrating high mobility in heavy metals Zn especially upward transfer. These could therefore be promising as bioindicators and phytoremediators of polluted areas pointing to origins of contamination. The presence of heavy metal contamination in the coastal waters of the gulf and its variability along the coastline is regarded as dependent on multiple sources of pollution associated with Kotlin Island, namely industrial and municipal waste waters, ship and vehicle traffic, aerosol deposits, contamination by dredging activity in a new port as well as the result of metals leaching from the soils of the island (Zn, Cu, Ni). Metal-accumulating coastal plants such as cane can be a source of secondary pollution of the gulf waters during their seasonal decomposition. The data showed significantly elevated concentrations of Ni, Zn and Cd in the hair of children living in the town of Kronstadt located on Kotlin Island that confirms the adequacy of the proposed indicating methodology and shows the unfavorable environmental situation in the region.

Analisis Lingkungan Sekitar Tambang Nikel Terhadap Kualitas Ternak Sapi Pedaging di Kabupaten Halamahera Timur

Continuous activity in nickel mining has resulted in steadily growing numbers of contaminants which influence the environment. Cattle rising nickel mining in East Halmahera are exposed to high contamination. This study was conducted to assess the presence of heavy metal contamination on soil, water, grass and animal products such as liver and meet. The method used were survey and case study. The parameters measured were the heavy metal content (Pb), Cadmium (Cd), Arsenic (As) and Mercury (Hg) in soil, water, grass and sample of cattle liver and meat. The samples were analyzed using AAS (Atomic Absorption Spectrophotometry) method. Thedata obtained were analyzed descriptively and t-test was used to asses the difference results of all parameters measured from two locations. The results showed that Pb in water and outside mining location were 0.1367 and 0.0770 ppm, respectively. Hg concentration in soil, water, grass, liver and meet callte raised around mining location were 17.8725, 0.0447, 6.6925, 7.4910 and 4.7210 ppb, respectively. The water around mining was contaminated with Pb. The contaminanion of Hg on soil, water and grass around mining areas, and also the liver and meat samples of cattle were exceeded the maximum standard that could be tolerated. Keywords: heavymetal,mining nickel,contamination, beef cattle.