Quantitative contributions of the major sources of heavy metals in soils to ecosystem and human health risks: A case study of Yulin, China

Liu, Jing; Liu, Yong Jun; Liu, Yu; Liu, Zhe; Zhang, Ai Ning

doi:10.1016/j.ecoenv.2018.08.030

Cited by 185 publications

(75 citation statements)

References 69 publications

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“…The Zn concentration of the six stations (LS01, LS02, LS04, LS05, LS18, and LS20) exceeded the background concentration. Zn infiltrated the aquatic system due to petrochemical and industrial effluents, vehicular traffic, fertilizer, and livestock manure [7,41]. Stations LS01, LS02, LS04, and LS05 were located in the Jinshi County.…”

Section: Resultsmentioning

confidence: 99%

“…The moderate pollution of Mn was investigated in the sediments of the Lishui River. The sources of Mn were attributed to agricultural and industrial activities, including coal combustion and coal mining [7]. Pollutants produced by agricultural activities in the Liyang plain, such as the employment of pesticides, were discharged into the Lishui River [44].…”

Section: Resultsmentioning

confidence: 99%

“…The natural sources of heavy metals mainly include geological weathering, soil erosion, and airborne dust [6]. Anthropogenic activities are the major cause of heavy metal pollution in the aquatic environment, such as industrial discharges, vehicular exhaust, mining operations, agricultural cultivation, and atmospheric precipitation [6,7]. Heavy metals drill through multiple biogeochemical cycles and eventually enter the human food chain, which brings about bioaccumulation and bio-magnification, and poses a potential threat to human health [8,9,10].…”

Section: Introductionmentioning

confidence: 99%

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Contamination Evaluation and Source Identification of Heavy Metals in the Sediments from the Lishui River Watershed, Southern China

Shen

Mao

Sun

et al. 2019

IJERPH

110

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Seven heavy metals (Cr, Mn, Co, Ni, Cu, Zn, Pb) were measured in surface sediments from the Lishui River watershed, an area with increased soil erosion in China. The mean concentrations of heavy metals were 61.20 mg/kg (Cr), 757.15 mg/kg (Mn), 9.39 mg/kg (Co), 25.31 mg/kg (Ni), 22.84 mg/kg (Cu), 91.66 mg/kg (Zn), and 40.19 mg/kg (Pb), respectively. The spatial distribution of heavy metals was site-specific, exhibiting a remarkably high level in the sampling stations with intense agricultural activities (Lixian) and industrial activities (Jinshi). Contamination indexes including contamination factor, pollution load index, nemerow multi-factor index, potential ecological risk index, and human health risk were used to assess the pollution degree of the river sediments. The results indicated the pollution degree of heavy metals decreased in the order of Mn>Pb>Zn>Cr>Cu>Ni>Co. Heavy metals resulted in non-pollution to moderate pollution, with low ecological risk and an acceptable carcinogenic risk caused by Cr and Ni for children and adults. Person’s correlation analysis and principal component analysis, coupled with cluster analysis, revealed that the sediments from the Lishui River were mainly influenced by two sources. Cr, Co, Ni, and Cu were mainly derived from natural sources, while Mn, Zn, and Pb originated from agricultural and industrial activities, mining, and vehicular traffic.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Contamination Evaluation and Source Identification of Heavy Metals in the Sediments from the Lishui River Watershed, Southern China

Shen

Mao

Sun

et al. 2019

IJERPH

110

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“…A range of industrial activities discharge their wastewaters into the rivers, which then deposit and enrich in the river sediments. River sediments are typically used to assess pollution of heavy metals using a range of defined pollution indices [9][10][11] .…”

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confidence: 99%

Pollution and contamination assessment of heavy metals in the sediments of Jazmurian playa in southeast Iran

Shirani

Afzali

Jahan

et al. 2020

Sci Rep

105

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Jazmurian playa was an ephemeral lake with a large catchment in southeast iran, which dried up over the last 10 years as a result of prolonged drought. As the lake was recipient of incoming industrial water with trace metals deposited to the sediment, the dust is the cause of environmental concern of the region and requires evaluation and better management. The aim of this study was to evaluate the environmental and ecological pollution of Jazmurian playa. Hence, 24 collected surface sedimentary samples were analyzed with ICP-OES. The environmental pollution indices including degree of contamination (cd), geoaccumulation index (igeo), enrichment factor (ef), pollution load index (PLI) and potential ecological risk (PER) were determined. The study revealed moderately to strongly pollution levels of pb, ni and Al, while Dy, pb, Y, Yb, Sm, te, U, cu, Mn, Sc represented moderate pollution. The EF values indicated four sites were highly enriched with Dy, Pb and Ni. The PER results showed high risk for four sites and considerable risk for others. Cluster analysis illustrated interconnection between the contaminants and the sites with major pollution at six sites. Obviously, climate change has considerable complex environmental impacts through transformation of local water and sediment pollution problem.

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“…Heavy metal pollution in the arable land has been a concern because of the potential for bioaccumulation of hazard heavy metals in crops [1][2][3], and ultimately pose a risk to human health [4][5][6]. Thus, numerous studies have focused on the remediation of heavy metals in soil [7,8].…”

Section: Introductionmentioning

confidence: 99%

Heavy metal remediation in soil with chemical amendments and its impact on activity of antioxidant enzymes in Lettuce (Lactuca sativa) and soil enzymes

et al. 2020

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Chemical amendments have been used to remediate soils contaminated with heavy metals. However, there is little understanding on the impacts of these amendments on the physiological and biochemical functions of plants and soil. This study used in situ microcosm experiment to understand the effect of chemical amendments on antioxidant and soil enzyme activity in plant and soil with respect to heavy metal reduction. Three chemical amendments-acid mine drainage sludge (AMDS), limestone (LS), and steel slag (SS)-were applied to soil at 3, 5, and 10% mixing ratios, and lettuce (Lactuca sativa) was cultivated in that soil for 30 days. The results showed that bioavailable Cd and Pb in soil was reduced by 9.8-40.5% and 4.2-92.5%, respectively. The most efficient amendment for heavy metal reduction was AMDS. The uptake of Cd and Pb also decreased by 0.5-66.1 and 21.6-79.5%, respectively, depending on the amendment type and application ratio. The activity of three antioxidants-catalase (CAT), ascorbate peroxidase (APX), and glutathione reductase (GR)-was generally higher than the control with no amendments. This result indicated that there was minimal inhibition of antioxidant activity due to the reduction of heavy metal uptake. Also, no significant difference was observed in chemical amendments applied soil compared to control in terms of soil enzyme activity. However, correlation analysis between heavy metal concentration in soil and two soil enzyme activities showed that significantly negative correlation (p < 0.01) was observed between bioavailable Pb in soil and acid-phosphatase activity. This result might indicate that impact of bioavailable Pb was much higher than Cd in terms of inhibition of soil enzyme activity. Overall, the application of chemical amendments to heavy metal polluted had a positive effect on plant physiological function and soil enzyme activity with a reduction in bioavailable heavy metals in soil and plants.

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Quantitative contributions of the major sources of heavy metals in soils to ecosystem and human health risks: A case study of Yulin, China

Cited by 185 publications

References 69 publications

Contamination Evaluation and Source Identification of Heavy Metals in the Sediments from the Lishui River Watershed, Southern China

Contamination Evaluation and Source Identification of Heavy Metals in the Sediments from the Lishui River Watershed, Southern China

Pollution and contamination assessment of heavy metals in the sediments of Jazmurian playa in southeast Iran

Heavy metal remediation in soil with chemical amendments and its impact on activity of antioxidant enzymes in Lettuce (Lactuca sativa) and soil enzymes

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