Assessment of potential health risk of heavy metals in soils from a rapidly developing region of China

Hu, Wenyou; Huang, Biao; He, Yue; Kalkhajeh, Yusef Kianpoor

doi:10.1080/10807039.2015.1057102

Cited by 55 publications

(22 citation statements)

References 22 publications

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“…The CV of Hg—is greatest. This showed that there was great heterogeneity in the content of Hg in the soil across the study area, indicating that anthropogenic inputs may be the main sources of Hg in this area [ 42 , 35 ]. The maximum content of Cr, Pb, Cd, Hg, Cu, Zn, and Ni were significantly higher than the critical level of Environmental Quality Standards for the soils in China.…”

Section: Resultsmentioning

confidence: 99%

“…Health risk assessment, including non-carcinogenic and carcinogenic risk assessment via three exposure pathways: ingestion, dermal contact, and inhalation, has been recognized as an important tool for identifying health risk in human activities and providing risk evidence for decision-makers [ 35 ]. The methodology used for the health risk assessment was based on the guidelines and Exposure Factors Handbook released by the U.S. Environmental Protection Agency [ 36 , 37 , 38 ].…”

Section: Methodsmentioning

confidence: 99%

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Assessment of Heavy Metal Pollution and Health Risks in the Soil-Plant-Human System in the Yangtze River Delta, China

Jia

et al. 2017

IJERPH

338

147

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Heavy metal (HM) contamination and accumulation is a serious problem around the world due to the toxicity, abundant sources, non-biodegradable properties, and accumulative behaviour of HMs. The degree of soil HM contamination in China, especially in the Yangtze River Delta, is prominent. In this study, 1822 pairs of soil and crop samples at corresponding locations were collected from the southern Yangtze River Delta of China, and the contents of Ni, Cr, Zn, Cd, As, Cu, Hg, and Pb were measured. The single pollution index in soil (SPI) and Nemerow composite pollution index (NCPI) were used to assess the degree of HM pollution in soil, and the crop pollution index (CPI) was used to explore the degree of HM accumulation in crops. The bioaccumulation factor (BAF) was used to investigate the translocation of heavy metals in the soil-crop system. The health risks caused by HMs were calculated based on the model released by the U.S. Environmental Protection Agency. The SPIs of all elements were at the unpolluted level. The mean NCPI was at the alert level. The mean CPIs were in the following decreasing order: Ni (1.007) > Cr (0.483) > Zn (0.335) > Cd (0.314) > As (0.232) > Cu (0.187) > Hg (0.118) > Pb (0.105). Only the mean content of Ni in the crops exceeded the national standard value. The standard exceeding rates were used to represent the percentage of samples whose heavy metal content is higher than the corresponding national standard values. The standard exceeding rates of Cu, Hg, and Cd in soil were significantly higher than corresponding values in crops. Meanwhile, the standard exceeding rates of Ni, As, and Cr in crops were significantly higher than corresponding values in soil. The chronic daily intake (CDI) of children (13.8 × 10−3) was the largest among three age groups, followed by adults (6.998 × 10−4) and seniors (5.488 × 10−4). The bioaccumulation factors (BAFs) of all crops followed the order Cd (0.249) > Zn (0.133) > As (0.076) > Cu (0.064) > Ni (0.018) > Hg (0.011) > Cr (0.010) > Pb (0.001). Therefore, Cd was most easily absorbed by crops, and different crops had different capacities to absorb HMs. The hazard quotient (HQ) represents the potential non-carcinogenic risk for an individual HM and it is an estimation of daily exposure to the human population that is not likely to represent an appreciable risk of deleterious effects during a lifetime. All the HQs of the HMs for the different age groups were significantly less than the alert value of 1.0 and were at a safe level. This indicated that citizens in the study area face low potential non-carcinogenic risk caused by HMs. The total carcinogens risks (TCRs) for children, adults, and seniors were 5.24 × 10−5, 2.65 × 10−5, and 2.08 × 10−5, respectively, all of which were less than the guideline value but at the alert level. Ingestion was the main pathway of carcinogen risk to human health.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Assessment of Heavy Metal Pollution and Health Risks in the Soil-Plant-Human System in the Yangtze River Delta, China

Jia

et al. 2017

IJERPH

338

147

View full text Add to dashboard Cite

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“…Health risks assessment of carcinogenic and noncarcinogenic risk through heavy metals present in some edible crops and fish samples at Nahuta Galena mine area has been determined to be above 1.0 from the mean concentrations of heavy metals using exposure pathways of inhalation, ingestion and dermal to determine health risk human as evidence for taking decision (USEPA, 1989;Hu et al, 2016Hu et al, , 2017. Other studies by Abhishek and Surendra (2016) reported that calculated Average Daily Exposure (ADE) of heavy metals of As (0.74 mg/kg), Hg (1064.61 mg/kg) Cr (86.18 mg/kg) and Pb (23.22 mg/kg) for the different samples of different locations were compared to reference value of USEPA (1989).…”

Section: Health Risk Assessment Exposurementioning

confidence: 99%

Health risk assessment on humans by contamination of heavy metals in some edible crops and fish at Galena mining area of Nahuta, Alkaleri Local Government Area, Bauchi State, Nigeria

Usman¹,

Yahaya²,

U³

2020

Afr. J. Pure Appl. Chem.

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This work investigated the human health risk effects of heavy metal contamination at Galena mining area. 10 elements were identified in both irrigated and wet season edible crops and fish were collected from five sampling locations at Galena mining area. Wet season crops held higher concentrations of heavy metals than irrigated crops. Study showed carcinogenic heavy metals Pb (1.42 E +08), Cd (1.36 E +14), Cr (1.31E-07), As (3.92 E-06), Co (9.42E + 12), Cd (1.36 E +14) while non-carcinogenic heavy metals exposure showed assessment of health risk which indicated three major exposure pathways for people: ingestion, dermal contact and inhalation for non-carcinogenic while carcinogenic metals were exposure through ingestion and inhalation only. HI and HQ levels are < 1 indicating health risks of heavy metals in crops and fish, while carcinogenic Pb showed higher HI through ingestion by children and adults exposure. In this study, the routes of heavy metals exposure especially Pb as the major constituent element of galena was greater than 1.0 indicating higher health risks hence adequate diagnosis should be upheld in the area.

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“…Generally, the human health risk assessment model employs carcinogenic and non-carcinogenic risk indices to measure potential population exposure risks caused by heavy metal contamination 2 . While these indices can be used as a criterion to indicate the necessity of soil remediation at a polluted site, they have not been fully implemented to spatially target heavy metal-contaminated areas at high resolution over a large geographical extent 14, 15 automatically, with limited site-based sampling data.…”

Section: Introductionmentioning

confidence: 99%

An Integrated H-G Scheme Identifying Areas for Soil Remediation and Primary Heavy Metal Contributors: A Risk Perspective

Zou¹,

Jiang

Duan

et al. 2017

Sci Rep

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Traditional sampling for soil pollution evaluation is cost intensive and has limited representativeness. Therefore, developing methods that can accurately and rapidly identify at-risk areas and the contributing pollutants is imperative for soil remediation. In this study, we propose an innovative integrated H-G scheme combining human health risk assessment and geographical detector methods that was based on geographical information system technology and validated its feasibility in a renewable resource industrial park in mainland China. With a discrete site investigation of cadmium (Cd), arsenic (As), copper (Cu), mercury (Hg) and zinc (Zn) concentrations, the continuous surfaces of carcinogenic risk and non-carcinogenic risk caused by these heavy metals were estimated and mapped. Source apportionment analysis using geographical detector methods further revealed that these risks were primarily attributed to As, according to the power of the determinant and its associated synergic actions with other heavy metals. Concentrations of critical As and Cd, and the associated exposed CRs are closed to the safe thresholds after remediating the risk areas identified by the integrated H-G scheme. Therefore, the integrated H-G scheme provides an effective approach to support decision-making for regional contaminated soil remediation at fine spatial resolution with limited sampling data over a large geographical extent.

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Assessment of potential health risk of heavy metals in soils from a rapidly developing region of China

Cited by 55 publications

References 22 publications

Assessment of Heavy Metal Pollution and Health Risks in the Soil-Plant-Human System in the Yangtze River Delta, China

Assessment of Heavy Metal Pollution and Health Risks in the Soil-Plant-Human System in the Yangtze River Delta, China

Health risk assessment on humans by contamination of heavy metals in some edible crops and fish at Galena mining area of Nahuta, Alkaleri Local Government Area, Bauchi State, Nigeria

An Integrated H-G Scheme Identifying Areas for Soil Remediation and Primary Heavy Metal Contributors: A Risk Perspective

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