Article
Environmental Sciences
Yesim Ozen
Summary: This study investigates the concentrations, spatial distributions, and sources of heavy metals in soils from southern Konya, revealing that the accumulation of heavy metals is primarily due to geological factors, with some contribution from human activities.
ENVIRONMENTAL EARTH SCIENCES
(2022)
Article
Green & Sustainable Science & Technology
Jing Wei, Xiaogang Zheng, Jintong Liu, Guowei Zhang, Yanxi Zhang, Cailing Wang, Yuanchen Liu
Summary: The study revealed that while the overall soil quality in the upstream watershed of the Guanting and Miyun Reservoirs in Beijing is excellent, there are relatively high contamination risks for Cd, Cu, Zn, and Cr. Through the analysis of heavy metal concentrations, factor analysis, and cluster analysis, the sources of different heavy metals were identified.
Article
Geosciences, Multidisciplinary
Kunshan Wang, Xuefa Shi, Jianjun Zou, Yanguang Liu, Zhengquan Yao, Sergey Alexandrovich Gorbarenko
Summary: The study analyzed detrital minerals and garnet chemistry of surface sediments in the Okhotsk Sea, revealing influences from the Amur River, volcanic belt, Sakhalin Island, Kamchatka Peninsula, and Kuril Islands. Different mineral contents can serve as indicators of volcanic eruption materials or sediments from different regions.
FRONTIERS IN EARTH SCIENCE
(2021)
Article
Environmental Sciences
Ruyi Li, Jing Xu, Jie Luo, Pan Yang, Yuwei Hu, Wenjing Ning
Summary: A total of 511 topsoils and 139 deep soil samples were collected to analyze the distribution characteristics, regional differentiation factors, and contamination sources of Cd in Shantou City. The results showed that the average value of soil Cd content was lower than the threshold value of soil environmental quality standard, but higher than the background value of soil. The source of Cd in the soil was a mix of anthropogenic and natural contamination, and the main source of contamination for adults and children was natural sources. The human health risk posed by Cd is below the reference threshold.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2022)
Article
Environmental Sciences
Zheng Li, Zhenghui Fu, Shuhang Wang, Yang Zhang, Jinbo Zhang, Yanxiao Liu, Huaicheng Guo, Pingjian Yang
Summary: This study conducted an ecological and human health risk assessment of metals and heavy metals in Qinghai Lake, the largest inland saltwater lake in China. The concentration, distribution, and source of these metals were investigated. It was found that the metals in the sediments of Qinghai Lake mainly came from five rivers entering the lake, with copper and zinc showing the highest enrichment capacity. The results of the risk assessment indicated low ecological risks and no threat to human health from the heavy metals in the lake's sediments.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Review
Engineering, Environmental
Yufeng Wu, Xiao Li, Lu Yu, Tengqi Wang, Jinnan Wang, Tingting Liu
Summary: With the development of economy, soil heavy metal pollution has become more severe, leading to degradation of soil resources and deterioration of ecosystems. This study focuses on the analysis of heavy metal pollution in Guangxi, Fujian, Liaoning, and Yunnan provinces in China. The results show that heavy metal concentrations increase from north to south, with the highest pollution in Northeast China and excessive levels in Central, Southwest, and South China. Mineral exploitation and industrial production are the primary causes in severely polluted provinces, while sewage irrigation and irrational fertilizer use contribute to pollution in agricultural areas. Urban development, transportation, and household refuse are also potential driving factors. Remediation methods involving physical-chemical, chemical-biological, and physical-biological technologies are widely applied, with a focus on combining phytoremediation and microbial remediation techniques for their environmental friendliness. Overall, this study provides valuable information on spatial distribution, sources, and remediation alternatives for soil heavy metal pollution, contributing to the protection of soil resources and land utilization.
RESOURCES CONSERVATION AND RECYCLING
(2022)
Article
Oceanography
Monise da Silva Pereira, Carolina Oliveira de Santana, Mauricio Gonzalez-Pacheco, Taise Bomfim de Jesus, Marcos Francos, Paulo de Tarso Amorim de Castro, Marjorie Cseko Nolasco, Oscar Corvacho-Ganahin, Luanna Maia Carneiro, Gilson Barbosa Dourado, Gisele Mara Hadlich, Igor Bogunovic
Summary: The high socioeconomic importance of estuarine environments is leading to an increase in human settlement and negative impacts on sensitive habitats. This study aimed to assess the environmental quality of the Serinhae ' m Estuary in Brazil by quantifying and mapping the distribution of various chemical elements in surface sediments. The results showed that the concentrations of most elements were influenced by local lithology rather than human activities, except for barium enrichment from Camamu Bay. Overall, the sediments did not pose a risk to the local biota or human population. This study provides important baseline data for future monitoring actions.
CONTINENTAL SHELF RESEARCH
(2022)
Article
Environmental Sciences
Taoran Shi, Yuheng Wang
Summary: This study conducted a global assessment of heavy metal contamination in indoor dust, finding that the concentrations of copper and zinc were often above permissible limits, with variations in pollution levels across regions being closely tied to local human activities; Additionally, indoor dust pollution with heavy metals significantly impacts children's blood lead poisoning in developing countries.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
He Xiao, Asfandyar Shahab, Beidou Xi, Qixin Chang, Shaohong You, Jieyue Li, Xiaojie Sun, Hongwei Huang, Xiangkui Li
Summary: This study collected 61 sediment samples along the Lijiang River to analyze pollution levels and ecological risks. The results showed high concentrations of Cd, Hg, Zn, and Pb in the river sediments, with the midstream area being the most polluted and posing a higher potential ecological risk, primarily due to urbanization and agricultural activities.
ENVIRONMENTAL POLLUTION
(2021)
Article
Chemistry, Multidisciplinary
Yuhong Dong, Shiliang Liu, Yongxiu Sun, Yixuan Liu, Fangfang Wang
Summary: This study aims to verify the ability of vegetation characteristics and topographical factors to reduce pollutants in tropical regions, while also exploring the distribution of soil heavy metals along roadsides. The results indicate that land use types and distance significantly impact soil properties, while heavy metal variations in natural soils are jointly affected by distance, plant coverage, relative elevation, and soil properties.
APPLIED SCIENCES-BASEL
(2021)
Article
Environmental Sciences
Wen Zhou, Qian Cao, Man Hong, Yutao Lei, Ding Wen, Dengfeng Zhang
Summary: The contamination of heavy metals due to human activities has become a serious environmental problem, and understanding their sources, distribution, and risks is essential. This study on Jieshi Bay in China revealed that heavy metal concentrations were higher in autumn compared to spring, and surface water had higher levels than bottom water. The main sources were identified as surface runoff and industrial wastewater discharge. Hg was the predominant pollutant in seawater, and certain metals, including Hg, Cu, Zn, and Cd, were found to easily accumulate in organisms.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Environmental Sciences
Ayaz Ul Haq, Said Muhammad
Summary: This study investigated the heavy metal contamination in sediments of the Indus River and its tributaries, revealing concentrations exceeding guidelines and significant pollution in the Ravi River.
GEOCARTO INTERNATIONAL
(2022)
Article
Environmental Sciences
Jun Ren, Jianxiu Hao, Ling Tao
Summary: The study revealed that in the upstream of the Yellow River, most concentrations of heavy metals were lower than potential effect levels, with only a small percentage of samples exceeding threshold effect levels, particularly for Ni. Higher concentrations of heavy metals were found in Qinghai and Gansu regions, while Inner Mongolia showed lower levels.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Environmental Sciences
Siyuan Wang, Jing Wang, You Luo, Hui Shen, Yibing Li
Summary: In this study, a Voronoi density-weighted summation method based on the Voronoi diagram is proposed to accurately measure the concentration and diffusion of heavy metal pollution in the target area, addressing the issue of uneven distribution of detection points. The use of local entropy deepens the understanding of local regional and overall system situations. Through four representative regions, the results show that the proposed whole scheme based on the Voronoi diagram can effectively predict and evaluate the spatial distribution of heavy metal pollution, providing a theoretical basis for comprehending and exploring the complex pollution environment.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Yi Ge, Yinghua Lou, Minmin Xu, Chao Wu, Jun Meng, Lei Shi, Fang Xia, Yan Xu
Summary: The study revealed spatial variation and functional diversity in microbial structures of urban river sediments, influenced by both natural and anthropogenic factors. Bacterial community compositions in sediments varied significantly among different regions, affected by heavy metals and sediment nutrients.
ENVIRONMENTAL POLLUTION
(2021)
Article
Geochemistry & Geophysics
Om Prakash Kumar, Amiya S. Naik, P. Gopinathan, T. Subramani, Vishvajeet Singh, Prakash K. Singh, Uma K. Shukla, Arun Prabhu
Summary: This study characterizes lignite samples from Kapurdi, Giral, and Sonari mines in Rajasthan's Barmer Basin using petrographic and geochemical techniques. The results provide insights into the geochemical properties, hydrocarbon potential, depositional environment, and paleo-climatic conditions of these lignite deposits. The study finds high volatile matter and sulfur concentrations in the Barmer lignite deposits, as well as indications of a wet environment during organic material decomposition. The findings have implications for understanding the coalification profile and hydrocarbon source rock potential in the region.
JOURNAL OF GEOCHEMICAL EXPLORATION
(2024)
Review
Geochemistry & Geophysics
Ashkan Jahandari, Behnam Abbasnejad
Summary: The assessment of heavy metal concentrations in agricultural soil is important for crop safety and quality, as well as potential risks to human health. This review analyzed published data on seven heavy metals in Iranian farmland soils and found that nickel and cadmium exceeded permissible levels. Arsenic showed significant contamination in multiple provinces, while lead and cadmium were highly contaminated in Fars province. Overall, the contamination levels of heavy metals in Iranian agricultural soils were relatively low.
JOURNAL OF GEOCHEMICAL EXPLORATION
(2024)
Article
Geochemistry & Geophysics
Imran Ud Din, Said Muhammad, Shah Faisal, Inayat ur Rehman, Wajid Ali
Summary: The presence of heavy metal contamination in coal mines and surrounding environments in the Hangu and Kurram districts poses potential risks to the environment and human health.
JOURNAL OF GEOCHEMICAL EXPLORATION
(2024)
Article
Geochemistry & Geophysics
Douglas Almeida Silveira, Paola Ferreira Barbosa, Cassiano Costa e Castro, Guilherme Ferreira da Silva, Joseneusa Brilhante Rodrigues
Summary: This study analyzed apatite grains from the Angico dos Dias Carbonatite Complex region in Brazil using an electron probe microanalyzer. The results showed that the apatite grains had characteristics of metacarbonatitic lithotypes and some had undergone substitution processes. Statistical analysis helped identify the sources of the apatite grains and confirmed the presence of carbonatitic bodies in the area.
JOURNAL OF GEOCHEMICAL EXPLORATION
(2024)