Source apportionment and health risk assessment of heavy metals in soil for a township in Jiangsu Province, China

Jiang, Yanxue; Chao, Sihong; Liu, Jianwei; Yue, Yang; Chen, Yanjiao; Zhang, Aichen; Cao, Hongbin

doi:10.1016/j.chemosphere.2016.11.088

Cited by 572 publications

(187 citation statements)

References 66 publications

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“…Many measures have been used in literature to assess heavy metal pollution in sediment, e.g., the geoaccumulation index, the potential ecological risk index, the enrichment factor, etc. [45][46][47]. In this study, we used I geo and RI to assess heavy metal pollution in the sediment of the Zhuzhou Reach with reference to the concentration of Dongting Lake sediments as the background.…”

Section: Assessment Of Heavy Metal Pollutionmentioning

confidence: 99%

Risk assessment of heavy metals in the surface sediment at the drinking water source of the Xiangjiang River in South China

et al. 2020

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Background: The Xiangjiang River is an important drinking water resource for the Hunan Province of China. It is crucial to ascertain the pollution status, influencing factors, ecological risks, and possible sources of heavy metals in the sediments of the Xiangjiang River. Sediment is both a source and a sink of heavy metals in aquatic ecosystems. In this study, surface sediment was collected from the Zhuzhou Reach of the Xiangjiang River and eight heavy metals were investigated. Results:In all sediment samples, all eight heavy metals were detected and their average concentration fell in the order of Zn > Pb > As > Cu > Cr > Ni > Cd > Co. Assessment shows extremely serious Cd pollution and a very high potential ecological risk from Cd. According to correlation analysis and principal component analysis (PCA), As, Cu, Ni, Pb, and Zn originate from industrial wastewater and mineral smelting activities, whereas Co, Cr, and Ni come from natural sources. Redundancy analysis (RDA) reveals that the organic matter content and the particle size of the sediment have a certain influence on the enrichment of heavy metals. Conclusion:Among all eight examined heavy metals in the surveyed area, the content of Zn, Pb, and As is the highest, and that of Cd and Co is the lowest. Despite a low level of absolute content, the Cd in sediment already renders a high ecological risk and thus calls for urgent attention. Anthropogenic activities are the main source of heavy metals in the sediment. The distribution of heavy metals may also be influenced by sediment properties. The results provide guidance for controlling heavy metal pollution and protecting drinking water sources in the Xiangjiang River.

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Section: Assessment Of Heavy Metal Pollutionmentioning

confidence: 99%

Risk assessment of heavy metals in the surface sediment at the drinking water source of the Xiangjiang River in South China

et al. 2020

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“…A widely used model for the health risk assessment (Jiang et al., ; Li, Ma, van der Kuijp, Yuan, & Huang, ; Olawoyin, Oyewole, & Grayson, ), developed by the United States Environmental Protection Agency (USEPA, ), is selected to calculate the potential noncarcinogenic risks of the PTEs to human health. For the contaminated soils, three exposure pathways of PTEs are considered: (a) ingestion: direct ingestion of soil particles and indirect consumption of crops grown on contaminated soils; (b) dermal contact with PTEs; and (c) inhalation of resuspended particles by nose or mouth (Jiang et al., ; Wu et al., ).…”

Section: Methodsmentioning

confidence: 99%

Anthropogenically disturbed potentially toxic elements in roadside topsoils of a suburban region of Bishkek, Central Asia

Abuduwaili

et al. 2019

Soil Use and Management

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The ecological environment in Central Asia is vulnerable to pressure from human activity due to the physical geography and climatic fragility of this region. A set of indicators suitable for the future assessment of this pressure needs to be proposed.Thirty-six topsoil samples (0-5 cm) were collected from roadsides in a suburban region of Bishkek, the capital of the Kyrgyz Republic in Central Asia, and a risk assessment of anthropogenically disturbed potentially toxic elements (PTEs) was systematically conducted with classic statistical methods. The results of detrended correspondence analysis and principal component analysis clearly showed that topsoil samples with high contents of PTEs (Pb, Zn and Cu) were strongly affected by traffic within a distance threshold of 200 m and that anthropogenic effects decreased significantly with increasing distance from the highway. The enrichment factor and anthropogenic contribution for Pb were the highest among the three PTEs, with average values of 2.0% and 47.4%, respectively, suggesting enrichment. However, the results of the human health risk assessment also indicated that noncarcinogenic risks did not occur for any of the anthropogenic PTEs. The reported method provides a new systematic pathway to reveal anthropogenic influences on the geochemical composition of soil. The conclusions of this work will be highly valuable as important guidelines for agriculture, and the results of the PTE contents will provide a scientific basis for soil collection in future studies. K E Y W O R D Santhropogenic factors, Central Asia, human health risk, potentially toxic elements, roadside soils 284 |

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“…These metals are not biodegradable and can persist in soils for years [3]. Soil is considered the main sink of these metals [4] and the presence of heavy metals can impose serious health hazards for human life, animals and aquatic biota with prolonged exposure [5][6][7]. Thus, soil remediation is necessary to attain more acceptable environmental conditions [8].…”

Section: Introductionmentioning

confidence: 99%

Soil Washing Technology for Removing Heavy Metals from a Contaminated Soil: A Case Study

Alaboudi¹,

Ahmed²,

Brodie³

2020

Pol. J. Environ. Stud.

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Although EDTA solution is considered an efficient soil washing liquid for extraction of heavy metals from soils, its low biodegradability may alter soil properties and suppress plant growth. Alternatively, chlorides are safer and cheaper washing liquids than EDTA. To investigate the efficiency of chlorides versus EDTA in extracting heavy metals from contaminated soils, soil samples (pH 6.14±0.11) were collected from a local agriculture soil in Australia, artificially contaminated with either Pb, Cd or Cr at three different levels of 200, 400 and 600 mg kg -1 , and then packed in capped plastic flasks. Batch washing techniques were followed with either EDTA or FeCl 3 solutions (prepared at 4 different concentrations of 0.05, 0.1, 0.25 and 0.5 M), and soil suspensions were agitated for different time periods (from 5.0 min. to 60.0 min); afterward, the extraction efficiencies of the investigated metals were considered. The removal efficiency of Pb from the contaminated soil (200 mg Pb kg -1 ) after 5 minutes of EDTA application seemed to be relatively high (≈75%). Afterward this efficiency decreased gradually with time. The efficiencies of the extracted Cd and Cr by soil washing with EDTA increased significantly with increases in the agitating period. Generally, the extraction efficiencies by EDTA decreased noticeably with increasing levels of soil contamination. On the other hand, the efficiencies of Pb, Cd and Cr extractions were high -especially when increasing both the concentrations of applied FeCl 3 solution and the time of agitation. The results also highlighted that soil washing with FeCl 3 seemed to be more favourable over EDTA for rapid extraction of heavy metals from contaminated soils. The efficiencies of extracting heavy metals by soil washing with 0.5M FeCl 3 for only one hour were 93.79±2.35%, 97.4±2.45% and 81.75±7.86% for Pb, Cd and Cr, respectively.

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Source apportionment and health risk assessment of heavy metals in soil for a township in Jiangsu Province, China

Cited by 572 publications

References 66 publications

Risk assessment of heavy metals in the surface sediment at the drinking water source of the Xiangjiang River in South China

Risk assessment of heavy metals in the surface sediment at the drinking water source of the Xiangjiang River in South China

Anthropogenically disturbed potentially toxic elements in roadside topsoils of a suburban region of Bishkek, Central Asia

Soil Washing Technology for Removing Heavy Metals from a Contaminated Soil: A Case Study

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