Article
Environmental Sciences
Tian Xie, Fei Lu, Meie Wang, Yuan Zhang, Changfeng Liu, Weiping Chen
Summary: This study introduced a novel method for assessing soil pollution in Macau, China, using anthropogenic background values and entropy weight method. It found that a significant portion of the sites had no specific point source pollution, and identified mercury and high molecular weight polycyclic aromatic hydrocarbons as the main contaminants in the soil. Through positive matrix factorization, three main anthropogenic sources of contaminants and their contributions were successfully identified and quantified in the study area.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Lihong Li, Hongxue Qi, Xiaodong Li
Summary: The composition, source, and health risks of PM2.5-bound metals were investigated during winter haze in Yuci College Town, Shanxi, China. The study found that the concentrations of metals were relatively high, with zinc, copper, lead, arsenic, nickel, chromium (VI), cadmium, and cobalt being the most abundant. The major sources of metals were identified as combustion, traffic emissions, and industry sources. Some metals exceeded the environmental air quality standards, with arsenic and chromium (VI) being the main contributors to health risks.
Article
Environmental Sciences
Lei Chai, Yuhong Wang, Xin Wang, Liang Ma, Zhenxiang Cheng, Limin Su, Minxia Liu
Summary: This study investigated the spatial distribution, source analysis, and uncertainties of eight heavy metals in cultivated soils in Lanzhou using GIS, PMF, and BS. Some heavy metals exceeded local background values in agricultural soils, with sources identified as natural, industrial, agricultural, and traffic-related activities. Analysis showed lower deviations for certain heavy metals, indicating potential for reduced pollution in cultivated soils and serving as a reference for pollution source allocation in other regions.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2021)
Article
Environmental Sciences
Ting Huang, Yuxia Deng, Xiaolong Zhang, Daishe Wu, Xianglian Wang, Shan Huang
Summary: The study revealed widespread heavy metal contamination in farmland soil in northwestern Hubei Province, posing a threat to crops like rice. Heavy metals mainly originated from pesticide and fertilizer use as well as atmospheric deposition and transportation exhaust gas. Cd and As were identified as the main noncarcinogenic and carcinogenic factors, respectively, posing the highest health risks to local residents from heavy metals.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Green & Sustainable Science & Technology
Shijie Song, Jing Zuo, Qing Chang, Chenchen Wang, Yi Wang, Ruisi Peng
Summary: The problem of soil heavy metal pollution caused by coal gangue accumulation areas is becoming more serious. In situ plant remediation technology has become a promising method to solve heavy metal soil pollution. This experiment studied the effects of single and compound soil heavy metal pollution on seed germination and seedling growth characteristics of alfalfa and ryegrass, and found that ryegrass is more tolerant than alfalfa in both single and combined pollution.
Article
Environmental Sciences
Tao Zhang, Pei Wang, Mingguo Wang, Jinwei Liu, Lei Gong, Shibin Xia
Summary: This study focused on riparian soils in the lower sections of the Lhasa River to examine the characteristics and sources of heavy metals in high-cold regions. The research found that the topsoil was more polluted than the deep soil, with Cd being the primary contributor to overall contamination. The study identified five sources for the six heavy metals and concluded that the heavy metals in the riparian soil pose no harm to human health. Monitoring of these heavy metals is important to ensure their safe utilization.
ENVIRONMENTAL RESEARCH
(2023)
Article
Environmental Sciences
Cong Yao, Zhijie Shen, Yongmin Wang, Nan Mei, Caixia Li, Yajun Liu, Weibin Ma, Cheng Zhang, Dingyong Wang
Summary: This study evaluated the pollution of heavy metals (HMs) in agricultural soil in a coal gangue stacking area in Chongqing, China, and identified their pollution sources. Results showed that the concentration of cadmium (Cd) in the soil exceeded the environmental standards, mainly originating from the leachate of coal gangue. Other HMs were mainly derived from coal gangue leachate, natural and agricultural mixed pollution, as well as traffic pollution.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Review
Engineering, Environmental
Krishno Chandra, Ram Proshad, Maksudul Islam, Abubakr M. Idris
Summary: Heavy metals in soil pose risks to biodiversity and human health, and accurately assessing these effects is challenging. This study evaluates the levels of 21 metals in soils around a coal-mining area in Bangladesh and applies an integrated risk assessment approach. The results show elevated levels of certain metals and indicate higher risks from various sources, including industrial and agricultural activities. The findings also highlight the potential health hazards, particularly cancer risks, associated with metal contamination from different sources.
ENVIRONMENTAL GEOCHEMISTRY AND HEALTH
(2023)
Article
Environmental Sciences
Jiahui Liang, Zhaoyue Liu, Yiqi Tian, Huading Shi, Yang Fei, Jingxian Qi, Li Mo
Summary: Environmental problems caused by heavy metal pollution in soil have attracted widespread attention worldwide. An integrated source-risk method was proposed and applied to identify and quantify heavy metal pollution sources and risks. The results showed that heavy metal accumulation in the soil was affected by atmospheric deposition, natural sources, industrial activities dominated by metal mining, industrial activities dominated by metal smelting, and traffic sources. The health risk assessment indicated acceptable carcinogenic risks for the study population, but non-carcinogenic risks were higher than the limit value for children. Ingestion was identified as the main exposure route contributing to the greatest health risk. Priority should be given to the control and management of pollution sources related to metal mining in formulating soil management strategies.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Jun Liu, Shiwen Zhang, Enwei Li, Yafei Zhu, Huizhen Cai, Shasha Xia, Chenchen Kong
Summary: In this study, a combined cubic ecological restoration scheme for soil improvement-vegetation reconstruction was constructed based on field experiments. The differences in soil properties and biodiversity were analyzed under different restoration schemes, and the best ecological restoration model was optimized. The results showed that the restoration significantly improved soil quality and biodiversity, and the combination of mixed soil amendments and tolerant plants was identified as the optimal cubic ecological restoration scheme.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Environmental
Shuai Shao, Bifeng Hu, Yunhan Tao, Qihao You, Mingxiang Huang, Lianqing Zhou, Qiuxiao Chen, Zhou Shi
Summary: The study successfully identified and apportioned the sources of five heavy metals in Wenzhou City using a combination of qualitative and quantitative approaches. A preliminary ecological risk assessment showed that Cd and Hg were the main contributors to contamination. The sources were found to be from different natural or anthropogenic origins.
ENVIRONMENTAL GEOCHEMISTRY AND HEALTH
(2022)
Article
Biodiversity Conservation
Lei Chai, Yuhong Wang, Xin Wang, Liang Ma, Zhenxiang Cheng, Limin Su
Summary: This study assessed the pollution levels of heavy metals in cultivated soils in Lanzhou using various indices and methods. The analysis revealed that most sampling sites had moderate ecological risk and insignificant health risks from heavy metals. The study also identified the sources of heavy metals in the area, providing valuable information for pollution source apportionment in other regions.
ECOLOGICAL INDICATORS
(2021)
Article
Geochemistry & Geophysics
Futian Liu, Xueqiu Wang, Shuang Dai, Jian Zhou, Dongsheng Liu, Qinghai Hu, Wei Wang, Mingjun Xie, Yuexin Lu, Mi Tian, Hao Yan
Summary: This study focused on analyzing soil heavy metals (HMs) in the middle Yellow River Basin in northern China. Geostatistical techniques were used to analyze the spatial variations of soil HMs, and multiple methods were employed to comprehensively assess the pollution status and health risks. The positive matrix factorization (PMF) model was used to determine the sources of soil HMs. The results showed regional zoning of soil HMs, with higher levels in the south near industrial cities. The comprehensive assessment identified relatively severe pollution and health risks in certain areas, primarily caused by Hg, Cd, and Pb. The PMF model identified five sources of soil HMs, with natural sources contributing the most. Key areas with combined pollution of soil HMs and high health risks were identified, emphasizing the need for prevention and control measures for Hg, Cd, Pb, and As in the middle Yellow River Basin.
JOURNAL OF GEOCHEMICAL EXPLORATION
(2023)
Article
Environmental Sciences
Chengyu Yuan, Fayong Li, Ziqiang Yuan, Guoyu Li, Xinqiang Liang
Summary: This study investigated the microbial distribution patterns and environmental factors influencing soil bacterial community composition in an alpine mining area of the Tianshan Mountain region in China. The study found that soil organic carbon concentration increased along the elevation gradient, with the highest concentration in the mining area, leading to increased microbial abundance and species richness. Some metals accumulated significantly in the tailing area were negatively correlated with microbial community structure.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Engineering, Environmental
Hengfeng Liu, Yanjun Wang, Shun Pang, Xinfu Wang, Jianguo He, Jixiong Zhang, Alfonso Rodriguez-Dono
Summary: Longwall caving mining (LCM) can lead to severe environmental problems including ground subsidence and heavy metal pollution in soils. The study found a correlation between surface subsidence law and distribution of heavy metals, offering a new interpretation of LCM's impact. Further analysis identified coal mining-induced subsidence as the main source of heavy metal pollution in soils, highlighting the need for comprehensive strategies to mitigate environmental impact.
JOURNAL OF HAZARDOUS MATERIALS
(2022)