Inventories of heavy metal inputs and outputs to and from agricultural soils: A review

Shi, Taoran; Ma, Jin; Wu, Xiao; Ju, Tienan; Lin, Xianglong; Zhang, Yunyun; Li, Xinhong; Gong, Yongquan; Hou, Hong; Zhao, Long; Wu, Fuyong

doi:10.1016/j.ecoenv.2018.08.016

Cited by 190 publications

(62 citation statements)

References 38 publications

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“…PHEs can occur in soils due to natural phenomena, e.g., weathering of the parent rock or metalliferous ores exposing metallic minerals. The most significant anthropogenic sources of PHE contamination include agriculture (fertilizers, animal manure, or pesticides), metallurgy (mining and smelting), energy production (leaded gasoline, battery production, or power generation), sewage sludge, and waste disposal [5,6]. Consequently, the contamination of agricultural soils has become a worldwide problem [4,[7][8][9][10][11][12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Geochemical Fractions of the Agricultural Soils of Southern Poland and the Assessment of the Potentially Harmful Element Mobility

et al. 2019

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Surface samples (0–25 cm each) of agricultural soils were investigated in five Regions (voivodeships) of southern Poland. The mean Potentially Harmful Element (PHE) pseudototal content ranges were as follows (mg/kg): As 5.19–10.9, Cd 0.34–1.56, Co 1.92–6.70, Cr 9.05–25.7, Cu 8.74–69.4, Hg 0.001–0.08, Ni 3.93–19.9, Pb 20.3–183, Sb 0.80–1.42, Tl 0.04–0.17, and Zn 61.3–422. The PHE availability depended on pH, the organic carbon (Corg) content, and the pseudototal PHE content in soils. Exchangeable and acid soluble PHE contents (BCRF1) determined in the Community Bureau of Reference (BCR) three-step sequential extraction procedure decreased in this order: Cd > Zn > Co > Ni = Sb > Cu > Tl > As > Cr = Pb. Actually available PHE contents in pore water (0.01 mol/dm3 CaCl2) ranged as follows: Cd 0.81–17%, Cr 0–0.25%, Cu 0.01–2.31%, Ni 0.16–2%, Pb 0.2–0.49%, and Zn 0.25–2.12%. The potential soluble total content of PHEs in pore water (0.05 mol/dm3 Na2EDTA) ranged as follows: Cd 27–91%, Cr 0.7–7.1%, Cu 6.7–98%, Ni 3.6–41%, Pb 15–41%, and Zn 3–34%. The mobility factor (MF) values indicated Cd (31.6%) and Zn (21.0%) as the most mobile elements in soil. Other PHEs followed the order of Co > Ni > Tl > As > Sb > Cu > Cr > Pb, with the MF values <10%. The risk assessment code (RAC) values revealed a very high ecological risk of Cd and Zn in the Podkarpackie Region and a high ecological risk of Cd in the Regions of Opolskie, Śląskie, Małopolskie, and Podkarpackie, and the same of Zn in the Opolskie and Śląskie. The modified risk assessment code (mRAC) index pointed a very high potential of adverse effects in soils in the Podkarpackie and a medium potential in the Opolskie, Śląskie, Małopolskie, and Świętokrzyskie. The potential adverse effect risk, described by the individual contamination factor (ICF) factor, was the following in the Regions, in the decreasing order: Cd > Pb > Sb > Zn > Co > Cu > Ni > Tl > As > Cr, and the same as described by the global contamination factor (GCF) values: Opolskie > Podkarpackie > Świętokrzyskie > Śląskie > Małopolskie.

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Section: Introductionmentioning

confidence: 99%

Geochemical Fractions of the Agricultural Soils of Southern Poland and the Assessment of the Potentially Harmful Element Mobility

et al. 2019

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“…However, it is undeniable that the PTEs can undergo chemical phase changes and spatial migration with changes in time and regional environments (irrigation, crop planting, soil properties, soil erosion, atmospheric dust fall, etc. ; Bi, Zhou, Chen, Jia, & Bao, ; Caporale & Violante, ; Han et al., ; Shi et al., ). To minimize the impacts of time and regional environments on the content distribution of PTEs, a small spatial scale study was conducted.…”

Section: Resultsmentioning

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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“…Thus, there is some human influence. accumulation in soil, rather than the application of phosphate fertilizers, which is related to the differences in farming systems and industrial level [66][67][68]. The primary drinking water sources and irrigation water in the research region were all from groundwater.…”

Section: Cadmium Content In Underground Watermentioning

confidence: 95%

“…Xia et al (2014) found that the input fluxes of Cd deposited in the atmosphere in different regions were significantly different (Yi et al (2018), Shi et al (2019). It is believed that atmospheric deposition is the main origin of Cd accumulation in soil, rather than the application of phosphate fertilizers, which is related to the differences in farming systems and industrial level [66][67][68].…”

Section: Cadmium Content In Atmospheric Depositionmentioning

confidence: 99%

Concentration, Source, and Total Health Risks of Cadmium in Multiple Media in Densely Populated Areas, China

Cai

Zhang

et al. 2019

IJERPH

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Cadmium (Cd) is a non-essential and harmful element to humans. Cadmium contamination is a serious issue for human health, especially in densely populated agroecology areas. In this study, the investigation of an agroecology area was conducted to gain insight into the relationship between Cd in wheat and soil and then evaluate the Cd total risk for human health. The soil samples and their matching wheat samples, underground water samples, and atmospheric deposition (air) samples were collected from a wheat-growing area in an agroecology plain. The cadmium concentration in the four types of media, in order, was air > soil > wheat > water. The mean concentration of the geoaccumulation index (Igeo) showed that the total Cd in soil (Cd-T) and Cdair reached a mild and moderate pollution level. The results of the correlation and principal component analysis (PCA) showed that the majority of Cdwheat originated from Cd-2 (exchangeable), Cd-4 (humic acid-bound), and Cd-7 (residual). Furthermore, the results of the stepwise multiple linear regression (SMLR) showed that three fractions were primarily controlled by Cd-T: clay, cation exchange capacity (CeC), and total organic carbon (TOC). In addition, the total cancer risk (CR) of Cd in multiple media was, in the order wheat > water > soil > air. It is noteworthy that the Cd content in underground water and wheat by the ingestion pathway posed cancer risks to the local residents and provided a comprehensive insight into multiple media environment management. Furthermore, it provides a very significant basic study for detailed research into the mobility and transformation for factions.

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Inventories of heavy metal inputs and outputs to and from agricultural soils: A review

Cited by 190 publications

References 38 publications

Geochemical Fractions of the Agricultural Soils of Southern Poland and the Assessment of the Potentially Harmful Element Mobility

Geochemical Fractions of the Agricultural Soils of Southern Poland and the Assessment of the Potentially Harmful Element Mobility

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

Concentration, Source, and Total Health Risks of Cadmium in Multiple Media in Densely Populated Areas, China

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