scholarly journals Health Risk Assessment of Heavy Metals in Soil of Dawu Water Source Area

2021 ◽  
Author(s):  
Zhizheng Liu ◽  
Henghua Zhu ◽  
Xiaomei Song ◽  
Guoping Shi ◽  
Binglin Jiang ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Health Risks ◽  
Source Area ◽  
Water Source ◽  
Research Area ◽  
Carcinogenic Risk ◽  
Risk Level ◽  
Free Level ◽  
Medium Risk ◽  
Adults And Children

Taking Zibo Dawu Water Source Area as the research area, with the help of MapGIS and SPSS analysis tools, the health risks Make an evaluation. The results showed that As, Pb, and Ni belonged to the risk-free level, Hg reached a high-risk level, and Cd reached a medium risk level. The source of Cr is similar to Ni, Cd, Pb, As, the source of Ni is similar to Cd, Pb, and the source of Pb is similar to Hg. The comprehensive non-carcinogenic risk indexes of heavy metals for adults and children are 7.94E-03 and 3.38E-03, respectively, and there is no non-carcinogenic risk; the total carcinogenic risk indexes of heavy metals for adults and children are 5.52E-06 and 4.23E-06, respectively , There is a carcinogenic risk that the human body can bear, and the main influencing factors are Ni and Cr. Skin contact is the main way for heavy metals to cause health risks.

scholarly journals Comparison of the Potential Ecological and Human Health Risks of Heavy Metals from Sewage Sludge and Livestock Manure for Agricultural Use

Toxics ◽  
2021 ◽  
Vol 9 (7) ◽  
pp. 145
Author(s):  
Baoling Duan ◽  
Qiang Feng
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Sewage Sludge ◽  
Health Risks ◽  
Swine Manure ◽  
Carcinogenic Risk ◽  
Human Health Risks ◽  
Adults And Children ◽  
Agricultural Use ◽  
The Mean

Sewage sludge and livestock (chicken, swine and cattle) manure samples were collected from the Yanmenguan Cattle Herbivorous Livestock Area to compare the potential ecological and human health risks caused by heavy metals contained in them. In this study, the Class II level of Quality Control of Imported Organic Fertilizers is selected as the limit standard value of heavy metals. Based on the mean content values, no heavy metal in cattle manure was higher than the limit standard value; the content of Cu in swine manure was higher than the limit of Cu; the content of Zn in sewage sludge, chicken manure and swine manure were all higher than the limit of Zn; and the content of Cr in sewage sludge and chicken manure were all higher than the limit of Cr. Results indicated that sewage sludge and livestock manure all had high contents of Zn, Cu and Cr. The mean pollution index (PI) suggested that Cu, Zn, As and Cr in sewage sludge and livestock manures all induced potential ecological risks. According to the mean Nemerow’s synthetic pollution index (PN) values, swine manure had the highest potential ecological risk for agricultural use. Daily exposure to Cu, Zn and Cr was higher than other heavy metals from sewage sludge and livestock manures, and heavy metal exposure was always higher for children than adults, with ingestion as the main pathway. Non-carcinogenic risk was caused mainly by Cu and Cr, based on the higher hazard quotient (HQ) values for adults and children. There was no non-carcinogenic risk for all people, except exposure of Cu from swine manure for children, which was 1.76 times higher than the threshold value of 1. According to the mean hazard index (HI) values, only swine manure had a non-carcinogenic risk for children. As the carcinogenic risk index (Risk) values were continuously greater for As than Cd, As had a higher carcinogenic risk than Cd. There was no carcinogenic risk for any single heavy metal, although As exposure from sewage sludge was found to have an inapparent carcinogenic risk for both adults and children. Regarding the RISK value, sewage sludge had an unacceptable carcinogenic risk for adults and children, and swine manure had an unacceptable risk for children only. In general, for both non-carcinogenic and carcinogenic risks, ingestion was the main pathway, and children were more sensitive than adults. Comparing the four kinds of organic waste, cattle manure was the safest for agricultural use in terms of ecological and human health risks. In multiple comparisons, swine manure was significantly different regarding potential ecological risk and non-carcinogenic risk, and sewage sludge was significantly different regarding carcinogenic risk.

scholarly journals Essential elements and standards for their contents in drinking water

2020 ◽  
pp. 30-38
Author(s):  
O.O. Sinitsyna ◽  
◽  
S.I. Plitman ◽  
G.P. Ampleeva ◽  
O.A. Gil'denskiol'd ◽  
...  
Keyword(s):  
Drinking Water ◽  
Health Risks ◽  
Human Body ◽  
Daily Intake ◽  
Carcinogenic Risk ◽  
Water Sources ◽  
Essential Elements ◽  
Risk Level ◽  
Drinking Water Sources ◽  
Reference Doses

Certain essential and conditionally essential natural elements (selenium, chromium, iodine, molybdenum, cobalt, vanadium, fluorine, lithium, silicon, boron, and bromine) are standardized in terms of their contents in drinking water as per sanitary-toxicological parameters of adverse health effects. Our research goal was to determine a contribution made by drinking water into supplying a human body with essential natural elements as well as to substantiate the necessity to update standards regarding these substances. We applied calculation models for dose equivalents of essential elements MPC (maximum permissible concentration), MPC calculations for these substances basing on a necessary 20 % contribution made by drinking water into reference doses, and calculation of non-carcinogenic health risks due to essential elements occurrence in specific drinking water sources with these elements being distributed into different groups as per similar effects produced on certain organs and systems in a body. We took existing drinking water sources containing 6 essential elements with similar effects as an example and applied a procedure for assessing non-carcinogenic health risks. Acting nickel and selenium MPC do not supply a body with an optimal daily intake whereas their determined MPC are not only harmless but also conform to the minimum necessary intake dose. At the same time neither acting lithium MPC nor its calculated one taking into account risk assessment based on internationally accepted reference doses doesn’t provide the minimum necessary daily intake into a human body. When boron and vanadium are contained in drinking water in a concentration close to their MPC, then their 20 % contribution into the reference dose is exceeded (71.4 % and 164.7 % accordingly). Introduction of these essential elements with food can become a factor that determines non-carcinogenic risk level.

scholarly journals Profiling of seasonal variation in and cancer risk assessment of benzo (a) pyrene and heavy metals in drinking water from Kirkuk city, Iraq

2021 ◽  
Author(s):  
Awaz Bahrooz Mohammed ◽  
Siraj Muhammed Goran ◽  
Abhrajyoti Tarafdar
Keyword(s):  
Heavy Metals ◽  
Drinking Water ◽  
Water Samples ◽  
High Performance ◽  
Winter Season ◽  
Carcinogenic Risk ◽  
Dry Season ◽  
Cancer Risk Assessment ◽  
Enzyme Linked Immunosorbent Assay ◽  
Adults And Children

Abstract The Lesser Zap River is the main tributary of the Tigris and is used as a main source of drinking water in Kirkuk city through the General Kirkuk project. Water samples at 13 sites were analyzed for heavy metals (cobalt, lead, manganese, copper) and benzo(a)pyrene using 2 methods of analysis (high-performance liquid chromatography (HPLC) and enzyme-linked immunosorbent assay (ELISA) kits). Risk evaluation for benzo(a)pyrene and lead in water samples was accomplished by Monte Carlo simulation. The highest concentrations of B(a)P were recorded at sites S7 and S5, with levels of 0.192 and 0.122 µg L− 1 detected by HPLC and ELISA, respectively. The WHO guidelines for benzo[a]pyrene in drinking water recommend 0.0007 mg L (0.7 µg. L− 1), and none of the samples surpassed this level; moreover, B(a)P levels exceeded EPA standards in 2014 (0.01 ppb), particularly when the liquid-liquid extraction method with HPLC was used. Carcinogenic risks for human adults and children exist and are highest during the rainy season as compared with the carcinogenic risk during the dry season; risks for children exceed those of adults. This indicates that the 2nd round of sampling (winter season) harbors more carcinogenic risk than the 1st round of sampling (dry season).

scholarly journals Potential Human Health Risks Assessment through Determination of Heavy Metal Contents in Regularly Consumed Yogurts in Bangladesh

2021 ◽  
Vol 18 (3) ◽  
pp. 603-610
Author(s):  
GMM Anwarul Hasan ◽  
Mohammed A. Satter ◽  
Anuj Kumer Das
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Health Risks ◽  
Hazard Quotient ◽  
Daily Intake ◽  
Carcinogenic Risk ◽  
Target Hazard Quotient ◽  
Metal Contents ◽  
Health Risks Assessment ◽  
Risks Assessment

This study estimated the concentrations of heavy metals in regularly consumed sour, sweet and homemade traditional yogurts in Bangladesh. A total of 300 yogurt samples (sour, sweet and homemade traditional); 100 yogurt samples of each category were considered for this assay. To assess the health risks, the daily yogurt consumption rate and the value of target carcinogenic and non-carcinogenic risks of these yogurt samples were also determined. In sour yogurt samples, detected heavy metal contents were 0.398±0.121 mg/kg, 0.774±0.372 mg/kg, 0.087±0.021 mg/kg, 0.131±0.026 mg/kg, 0.011±0.006 mg/kg, 0.031±0.005 mg/kg, 0.445±0.267 mg/kg and 0.029±0.024 mg/kg while in sweet yogurt samples, detected heavy metal contents were 0.410±0.146 mg/kg, 0.704±0.324 mg/kg, 0.082±0.028 mg/kg, 0.146±0.025 mg/kg, 0.010±0.005 mg/kg, 0.030±0.007 mg/kg, 0.460±0.265 mg/kg, and 0.035±0.026 mg/kg and in homemade traditional yogurt samples, detected heavy metal contents were 0.410±0.147 mg/kg, 1.502±0.367 mg/kg, 0.085±0.020 mg/kg, 0.120±0.024 mg/kg, 0.011±0.005 mg/kg, 0.020±0.005 mg/kg, 0.251±0.174 mg/kg and 0.025±0.021 mg/Kg for Iron (Fe), Copper (Cu), Manganese (Mn), Zinc (Zn), Lead (Pb), Cadmium (Cd), Chromium (Cr) and Arsenic (As) respectively. Among the analyzed heavy metals, highest concentration of Cu and lowest concentration of Pb was detected in all yogurt types. The values of estimated daily intake (EDI), Target hazard quotient (THQ), Total THQ (TTHQ) and Target Carcinogenic risk (TCR) confirmed that, there have no chances of any kind of carcinogenic and non-carcinogenic risks from these yogurt samples.

scholarly journals Assessing Heavy Metal Contamination Risk in Soil and Water in the Core Water Source Area of the Middle Route of the South-to-North Water Diversion Project, China

Land ◽  
2021 ◽  
Vol 10 (9) ◽  
pp. 934
Author(s):  
Li Tan ◽  
Bin Yang ◽  
Zhibin Xue ◽  
Zhanqi Wang
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Surface Water ◽  
Ecological Risk ◽  
Heavy Metal Contamination ◽  
Source Area ◽  
Water Source ◽  
Water Diversion ◽  
The Core ◽  
North Water

The Middle Route Project of China’s South-to-North Water Diversion Project (SNWDP) is a national-level water source protection zone and the ecological safety of its water quality and surrounding soil is of great significance. In this study, heavy metals in the surface water and topsoil in the core water source area were quantitatively analyzed using a geographic information system (GIS) and geostatistical techniques combined with environmental pollution and ecological risk assessment models to determine their environmental contamination levels, ecological risk levels, and spatial distribution patterns. Cd was identified as an essential factor responsible for the overall slight heavy metal pollution in the topsoil layer. Heavy metal contamination in surface water was primarily driven by alert-level concentrations of Hg and was consistently distributed in areas with high concentrations of Hg in the topsoil. Applying the potential ecological risk index (RI) revealed two key results. First, surface water showed no ecological risk. The concentrations of heavy metals in surface water met the goals set by relevant authorities in China. Second, overall, the topsoil was at low ecological risk, with a spatial pattern primarily influenced by Cd and Hg. Some heavy metals might have similar pollution sources and originate from human activities such as industrial activities, mining and smelting, and pesticide and chemical fertilizer applications. The study is important for improving the soil and water ecology in the reservoir area and ensuring the northward diversion of high-quality water. In addition, it provides a sound basis for making decisions about local heavy-metal remediation and treatment projects.

scholarly journals Evaluating Heavy Metals Contamination in Campus Dust in Wuhan, the University Cluster in Central China: Distribution and Potential Human Health Risk Analysis

2021 ◽  
Author(s):  
Shan Liu ◽  
Xihao Zhang ◽  
Changlin Zhan ◽  
Jiaquan Zhang ◽  
Jun Xu ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Health Risk ◽  
Health Risks ◽  
Human Health Risk ◽  
Carcinogenic Risk ◽  
Central China ◽  
Natural Soil ◽  
Lifetime Cancer Risk ◽  
Potential Health ◽  
The University

Abstract The potential health risk of heavy metals (HMs) in campus dust may threaten the health of thousands of students, teachers, and their families in Wuhan, the university cluster in Central China every day. In this research, the pollution characteristics and health risk with HMs was the first time presented in campus dust from the canteen, playground, dormitory, and school gate to date. The average HMs concentration in campus dusts ranked Pb (83.5 mg kg-1) > Cu (70.2 mg kg-1) > Zn (47.2 mg kg-1) > Cr (46.0 mg kg-1) > Ni (22.7 mg kg-1) > As (15.2 mg kg-1) > Cd (3.38 mg kg-1). The HMs would more likely to accumulate in dormitory dust and canteen dust. In the downtown area, Zn, As, and Cd had been preliminarily identified from fossil fuel combustion and natural geochemical processes. Cu and Pb would source from cooking and traffic transportation. Ni and Cr would likely reflect the contributions of natural soil weathering. Although, no significant non-carcinogenic health risks were found to students or teachers from campus dust. Their children would more likely to exposure health risks when eating in the canteen, playing on the playground, or walking around the school gate. While the incremental lifetime cancer risk values revealed respiratory intake of HMs does not pose a carcinogenic risk on the campus.

scholarly journals Health Risks Evaluation of Heavy Metals in Seafood

2013 ◽  
Vol 15 (1) ◽  
pp. 137-144
Author(s):  
Zahra Khoshnood ◽  
Reza Khoshnood
Keyword(s):  
Heavy Metals ◽  
Dietary Intake ◽  
Health Risks ◽  
Natural Waters ◽  
Rapid Development ◽  
Anthropogenic Sources ◽  
Blood Cholesterol ◽  
Adults And Children ◽  
The Persian Gulf ◽  
Target Hazard Quotients

ABSTRACT Fish is an excellent, low-fat source of protein and provides many benefits, such as contributing to low blood cholesterol. Heavy metals are increasingly being released into natural waters from geological and anthropogenic sources. Due to the rapid development of agriculture and industry, and a historical lack of enforcement of regulations, the study areas have become contaminated by metals, especially cadmium (Cd) and lead (Pb) which has been emitted into the environment through atmospheric deposition, solid-waste emissions, sludge applications, and irrigations with wastewater. The health risks posed to the local inhabitants by exposure to Pb and Cd in two coastal regions of Iran through the consumption of contaminated fish were investigated, based on estimated target hazard quotients (THQs). The results showed that THQ values are less than 1 for both adults and children by either group consuming fish alone. The distribution of several heavy metals (Cd and Pb) was investigated in muscle and liver in six different fish species seasonally collected in the Persian Gulf (autumn 2008 - summer 2009). The concentrations of all metals were lower in flesh than those recorded in liver due to their physiological roles. The THQ index for fish was calculated. Estimation of target hazard quotients calculations for the contaminated fish consumption was calculated to evaluate the effect of pollution on human health. Total metal THQs values (Pb and Cd) for adults were 0.05 and 0.04 in Bushehr and Bandar-Genaveh, respectively, and for children was 0.08 and 0.05 in Bushehr and Bandar-Genaveh, respectively. The dietary intake of Pb estimated for the inhabitants in this area is far below the limit considered tolerable. The Cd intake through the consumption of fish is also less than the limit of daily dietary intake considered tolerable by FAO/WHO.

scholarly journals Concentrations and Risk Evaluation of Selected Heavy Metals in Amaranthus (L.) Leaf Cultivated in Katsina State, North West Nigeria

2019 ◽  
pp. 1-12
Author(s):  
A. I. Yaradua ◽  
A. J. Alhassan ◽  
A. Nasir ◽  
K. I. Matazu ◽  
A. Usman ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Cancer Risk ◽  
Hazard Quotient ◽  
Hazard Index ◽  
Carcinogenic Risk ◽  
Risk Level ◽  
Target Hazard Quotient ◽  
Moderate Risk ◽  
Lifetime Cancer Risk ◽  
North West

Bioaccumulation of seven heavy metals (Cr, Cd, Fe, Ni, Mn, Pb and Zn) in  Amaranthus leaf cultivated in Katsina state Nigeria were measured using atomic absorption spectrometer. The health risks to the local inhabitants from the consumption of the Amaranthus leaf were evaluated based on the Target Hazard Quotient. The possibility of cancer risks in the Amaranthus (L.) leaf through the intake of carcinogenic heavy metals was estimated using the Incremental Lifetime Cancer Risk. The target hazard quotient was (THQ)>1, indicating that the Amaranthus leaf cultivated may pose a non-carcinogenic risk for all the studied metals. Hazard index (HI) was low. The incremental cancer risk (ILCR) for Cd  violated the threshold risk limit (>10−4) and ILCR for Pb reached the moderate risk limit (>10−3) in all the studied samples in adults, While in children ILCR for both Pb in samples from Dabai, Daura, Funtua, Matazu and Zango and Cd for all samples have reached the moderate risk limit (>10−3), while the ILCR for Pb in samples from Birchi, Dutsinma, Kafur, Katsina and Malunfashi are beyond the moderate risk level (>10−2). The study suggests that consumption of Amaranthus leaf cultivated in Katsina may contribute to the population cancer burden.

scholarly journals Health Risks of Trace Metals in Wastewater-Fed Fishes: A Case Study

2019 ◽  
Vol 2 (1) ◽  
Author(s):  
Aslıhan Katip
Keyword(s):  
Trace Metals ◽  
Health Risks ◽  
Transfer Factor ◽  
Hazard Quotient ◽  
Carcinogenic Risk ◽  
Risk Level ◽  
Secondary Treatment ◽  
Treated Effluent ◽  
Standard Values

In this study, the usage wastewater from secondary treatment in feeding fishes of Carassius gibelio species and suitability of the fishes for human food were evaluated. The metals (Ag, Al, As and B) in treated effluent and skeleton, skin, eyes and brain tissues of fishes were examined seasonally. It was found that treated effluent was not suitable for irrigation and aquaculture in terms of Al according to the Turkish standard values. According to annual averages the size order of Ag and B concentrations were skeleton> skin> eyes>brain and skeleton> skin>brain>eye respectively. Also, skin>brain>eyes>skeleton was for As and Al.   TF (Transfer Factor) values of all metals examined were determined as >1 in the four tissues and the metals caused bioaccumulation because of treated effluent. Concentrations in muscles were found 7 to 6227 times higher than in water. The size order of TF and BCF (Bio-concentration Factor) values in skin and eye tissue were the same and it was Ag>Al>As>B. It was Ag>Al>As>B in skeleton, Al>As>Ag>B in brain. HQ (Hazard Quotient) of Al in all tissues had carcinogenic risk level.

scholarly journals Related health risk assessment of exposure to arsenic and some heavy metals in gold mines in Banmauk Township, Myanmar

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Pokkate Wongsasuluk ◽  
Aung Zaw Tun ◽  
Srilert Chotpantarat ◽  
Wattasit Siriwong
Keyword(s):  
Heavy Metals ◽  
Risk Assessment ◽  
Cancer Risk ◽  
Health Risks ◽  
Environmental Protection Agency ◽  
Gold Mining ◽  
Hazard Index ◽  
Risk Level ◽  
Small Scale ◽  
Cancer Risks

AbstractExposure to heavy metals in mining activities is a health issue among miners. This study was carried out at three small-scale gold mining sites situated in Banmauk Township, Myanmar and aims to assess the occupational health risks of small-scale gold miners who are exposed to arsenic (As), cadmium (Cd), mercury (Hg) and lead (Pb) in the soil through the dermal route. Soil samples were analyzed through atomic absorption spectroscopy (AAS). The concentrations of the heavy metals in soils found As, ranged 1.04 mg/kg to 22.17 mg/kg, 0.13 mg/kg to 3.07 mg/kg for Cd, 0.15 mg/kg to 77.44 mg/kg for Hg, and 7.67 mg/kg to 210.00 mg/kg for Pb. In this study, 79% of the participants did not use any form of personal protective equipment (PPE) while working in gold mining processes. Regarding noncancer risk assessment, the results found all hazard quotient were lower than acceptable level (HQ < 1). In addition, all hazard index (HI) was lover than 1, the highest HI was found as 5.66 × 10−1 in the amalgamation process. On the other hand, the result found cancer risk ranged from 8.02 × 10−8 to 1.75 × 10−6, and the estimated cancer risks for 9 years ranged from 4.78 × 10−7 to 1.04 × 10−5. Therefore, the cancer risks of the miners were greater than the United State Environmental Protection Agency (U.S. EPA) acceptable cancer risk level, 1 × 10−6, and the miners may be at risk of developing carcinogenic diseases. The suggestion is to educate miners about the health risks of heavy metals and to encourage the use of proper PPE all the time while working in gold mine.

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