Status, fuzzy integrated risk assessment, and hierarchical risk management of soil heavy metals across China: A systematic review

Chen, Xiyao; Li, Fēi; Liu, Siqi; Ou, Changhong; Yan, Jingjing; Sun, Tieheng

doi:10.1016/j.scitotenv.2021.147180

Cited by 37 publications

(10 citation statements)

References 33 publications

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“…Obviously, HI and CR for children in residential areas appear with larger values, except HI for adults. The main factors related to the distribution of risk areas were the presence of As, Sb and Hg, which is consistent with many other case studies of mining and industrial pollution in China [61]. Another remarkable finding was that the CR risks for adults and for agricultural uses were wider than expected, as the RI only revealed mild damage for soil samples.…”

Section: Discussionsupporting

confidence: 87%

Ecological and Health Risk Assessments of an Abandoned Gold Mine (Remance, Panama): Complex Scenarios Need a Combination of Indices

González-Valoys

Esbrí

Campos

et al. 2021

IJERPH

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The derelict Remance gold mine is a possible source of pollution with potentially toxic elements (PTEs). In the study area, diverse mine waste has been left behind and exposed to weather conditions, and poses risks for soil, plants and water bodies, and also for the health of local inhabitants. This study sought to perform an ecological and health risk assessment of derelict gold mining areas with incomplete remediation, including: (i) characterizing the geochemical distribution of PTEs; (ii) assessing ecological risk by estimating the pollution load index (PLI) and potential ecological risk index (RI); (iii) assessing soil health by dehydrogenase activity; and iv) establishing non-carcinogenic (HI) and carcinogenic risks (CR) for local inhabitants. Soil health seems to depend on not only PTE concentrations, but also on organic matter (OM). Both indexes (PLI and RI) ranged from high to extreme near mining and waste accumulation sites. As indicated by both the HI and CR results, the mining area poses a health risk for local inhabitants and particularly for children. For this reason, it will be necessary to set up environmental management programs in the areas that are most affected (tailings and surrounding areas) and accordingly establish the best remediation strategies to minimize risks for the local population.

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Section: Discussionsupporting

confidence: 87%

Ecological and Health Risk Assessments of an Abandoned Gold Mine (Remance, Panama): Complex Scenarios Need a Combination of Indices

González-Valoys

Esbrí

Campos

et al. 2021

IJERPH

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“…Several studies also investigated the driving factors of heavy metals in soil, both at the national level and regional levels. In the case of national-level studies, Chen et al [44] reviewed 779 topsoil studies published from 2009 to 2020 and conducted a fuzzy eco-health risk model, identifying the risks from Pb, Cd, As, and Hg as the priority control metals at the national level in China. Moreover, Cd and Hg were the principal pollution factors in the region of Hubei province, which was partly consistent with our study since our study area was also located in Hubei province.…”

Section: The Driving Pollutant Factorsmentioning

confidence: 99%

“…At present, several studies have investigated or reviewed the principal heavy metals in the soil at the national level or regional level based on different guideline values [42][43][44][45][46][47]. However, there is a lack of knowledge about China's newly issued standard, especially for intensive sampling surveys, which could improve the reliability of bigdata analysis.…”

Section: Introductionmentioning

confidence: 99%

Assessment of the Driving Pollution Factors of Soil Environmental Quality Based on China’s Risk Control Standard: Multiple Bigdata-Based Approaches with Intensive Sampling

Wang

Wei

et al. 2022

IJERPH

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Identifying the driving factors of soil environmental quality is critical in raising countermeasures for managing the soil environment efficiently and precisely. In 2018, China issued risk control standards to divide soil environmental quality into three classes to meet the demands of environment management. However, there is a lack of knowledge of this new standard. An intensive field-sampling research (2598 top-soil samples were analyzed) was conducted in the agricultural land of Hubei province, central China, to find the driving factors of pollutants based on this new standard. According to the standard, the proportion of classes 1, 2, and 3 in the overall quality grade was 57.3%, 41.7%, and 1%, respectively. The standardized index showed that the pollution levels of cadmium, arsenic, lead, and chromium were higher than that of mercury. The first component of the principal component analysis explained 56.4% of the total variance, and the loading of cadmium, arsenic and lead were −53.5%, −52.1%, and −51.2%, respectively. The general linear modeling found that cadmium and arsenic showed positive and significant effects (p < 0.001) on the grading results of soil environmental quality. Based on the random forest algorithm, cadmium showed the greatest importance on soil environmental quality (increase in mean squared error = 32.5%). Overall, this study revealed that cadmium, arsenic, and lead were driving pollutants affecting soil environment quality grade. The large data size increased the reliability and robustness of the study’s conclusions, and it provided reference methods for future studies investigating China’s new standard for assessing soil environmental quality.

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“…As the mother river of Hunan [20][21], the Xiangjiang River has a long main stream and a wide catchment area, and may be contaminated with heavy metals when it flows through the upstream areas rich in colour metals. When the river reaches the lower reaches of the Xiangjiang River, the river flow slows down and heavy metals may again be absorbed by the soil along the banks [22]. Therefore, the study of heavy metals in river bank soils [23][24][25] is of great significance to the evaluation of river water quality and river ecological protection [26][27][28][29][30].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Onshore and Offshore Soils in the Lower Xiangjiang River

Zhou

Zhang

Han

et al. 2022

J. Phys.: Conf. Ser.

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The soil on the west bank of the Xiangjiang River in the main urban area of Changsha, Hunan Province is referred to as shore soil, and the soil on the mid-levels of the Yuelu Mountains in Changsha is referred to as offshore soil. To stabilise the heavy metals in the soils, which do not readily migrate by pyrolysis, these soil samples were heated at 450°C for 3 hours in a muffle furnace and removed after natural cooling. These heated and stabilised soils were analysed by inductively coupled plasma emission spectrometry (ICP-OES), scanning electron microscopy (EMS) and XRD diffractometry respectively. It can be found that: (1) There is a difference in the heavy metal content between the shoreline soil and the offshore soil of the Xiangjiang River. (2) The scanning electron microscope shows that the microstructure of the soil is altered by prolonged river water infiltration and washing. (3) Both onshore and offshore soils are a mixture of crystalline and non-crystalline materials, with less non-crystalline material in the onshore soil compared to the offshore soil. (4) The main crystalline material in both onshore and offshore soils is SiO2.(5) Soil samples containing metallic elements are mostly in non-crystalline form.

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Status, fuzzy integrated risk assessment, and hierarchical risk management of soil heavy metals across China: A systematic review

Cited by 37 publications

References 33 publications

Ecological and Health Risk Assessments of an Abandoned Gold Mine (Remance, Panama): Complex Scenarios Need a Combination of Indices

Ecological and Health Risk Assessments of an Abandoned Gold Mine (Remance, Panama): Complex Scenarios Need a Combination of Indices

Assessment of the Driving Pollution Factors of Soil Environmental Quality Based on China’s Risk Control Standard: Multiple Bigdata-Based Approaches with Intensive Sampling

Analysis of Onshore and Offshore Soils in the Lower Xiangjiang River

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