Article
Environmental Sciences
Xiaoqian Deng, Longjiang Mao, Yuling Wu, Zhihai Tan, Wanzhu Feng, Yuanzhi Zhang
Summary: This study investigated the heavy metal pollution in the sediments of seven rivers flowing into Haizhou Bay in eastern China. The results showed that the Shawang River and Linhong River were severely polluted, while most sediments met the marine sediment quality criteria of China. However, Cd posed a considerable ecological risk due to its high enrichment. These findings suggest the need for measures to mitigate the potential risk of heavy metal pollution in the sediments of these rivers.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Environmental Sciences
Yan-Jie Han, Rui-Ze Liang, Hai-Song Li, Yang-Guang Gu, Shi-Jun Jiang, Xiang-Tian Man
Summary: This study investigated the occurrence, multi-index assessment, and sources of heavy metals in surface sediments of Zhelin Bay. The concentrations of seven heavy metals were found to be significantly higher than their corresponding background values. The assessment using geo-accumulation index (I-geo) and pollution load index (PLI) indicated that some heavy metals were slightly polluted or moderately polluted in the region. The ecological risk assessment using potential ecological risk index (RI) and mean possible effect level (PEL) quotient showed that the surface sediments of Zhelin Bay had slight ecological risks and a 21% probability of toxicity. Principal component analysis (PCA) combined with correlation analysis (CA) and hierarchical cluster analysis (HAC) revealed three potential sources of heavy metal contamination in Zhelin Bay.
Article
Environmental Sciences
Huijuan Wang, Zhengqiu Fan, Zexing Kuang, Yuan Yuan, Huaxue Liu, Honghui Huang
Summary: The study conducted in Daya Bay's northwestern region collected seasonal surface sediment samples to assess pollution and ecological risks, finding that heavy metal concentrations were generally below standard criteria, but higher in some sites during spring, particularly for Cr and As. The ecological risk indices indicated moderate to considerable risks, with few sites showing high ecological risk. Anthropogenic activities affected Cu, Hg, and Pb levels, while As appeared to be sourced from natural inputs like the atmosphere. Overall, human impacts played a significant role in heavy metal contamination in the environment.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2021)
Article
Environmental Sciences
Yifei Fan, Xiuling Chen, Zhibiao Chen, Xiaoxiao Zhou, Xin Lu, Jie Liu
Summary: The study revealed that the concentrations of heavy metals V, Cr, Co, Ni, Cu, Zn, Cd, and Pb in the surface sediments of Luoyuan Bay exceeded the marine sediment quality standards, indicating a potential ecological hazard. Higher concentrations of heavy metals were observed in the north and lower concentrations in the south, with V, Al, Co, Ni, and Pb originating from weathering and erosion of rocks and industrial wastewater discharge, while Cu, Zn, Cr, and Cd were primarily associated with ship transportation and repair, and marine aquaculture activities.
ENVIRONMENTAL RESEARCH
(2022)
Article
Environmental Sciences
Xiaozhu Liu, Yanqing Sheng, Qunqun Liu, Zhaoran Li
Summary: This study investigated the spatial distribution, chemical fraction, ecological risks, and potential sources of heavy metals in surface sediments and sediment cores in Dingzi Bay, Shandong Peninsula. The results showed that Cd and As posed high environmental risks in both surface sediments and sediment cores, with high concentrations mainly found in the middle and the mouth of the bay. The source identification revealed that shipping and aquaculture were the main sources of most heavy metals, while industrial pollution contributed to the levels of As and Ni. Furthermore, the correlation coefficients indicated that the presence of fine particles, total nitrogen, total organic carbon, total phosphorus, and acid-volatile sulfides significantly increased the bioavailability of most heavy metals in surface sediments.
MARINE POLLUTION BULLETIN
(2023)
Article
Environmental Sciences
Yuxiu Jin, Jun Du, Yonggen Sun, Enkang Wang, Wenwen Yan
Summary: This study analyzed the concentrations, sources, and pollution status of heavy metals in surface sediments from Laoshan Bay, China. The results showed that Cu, Zn, Cr, and As were not found to be polluted, while Pb, Cd, and Hg were polluted to varying degrees. The sources of heavy metals were mainly natural and anthropogenic.
MARINE POLLUTION BULLETIN
(2023)
Article
Environmental Sciences
Sen Guo, Yizhang Zhang, Jieying Xiao, Qiuying Zhang, Junhong Ling, Baojian Chang, Guanglei Zhao
Summary: This study investigated the concentrations of heavy metals in sediment samples from Nansi Lake, with Cd being the most polluted metal. Industrial and mining sources were found to be the main influencing factors, while contributions from fertilizers and herbicides, though lower, showed an increasing trend.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Environmental Sciences
Maria Claudia R. Sola, Robson M. de Jesus, Madson M. Nascimento, Gisele O. da Rocha, Jailson B. de Andrade
Summary: In this study, the levels of mercury (Hg) in polychaete species and sediments from Todos os Santos Bay, Northeastern Brazil were evaluated. The Hg distribution along different body parts of the annelids was also measured. The results showed that Hg levels in the polychaete tissues were higher than those in the sediments. The specific habits, feeding behavior, trophic level, and environmental conditions were found to be the main factors affecting Hg levels in the studied species. The bioaccumulation factor (BAF), contamination factor (CF), and ecological risk assessment (Er) were calculated, indicating low to no significant ecological risk of Hg for the biota and benthonic organisms living in the sediments. Additionally, no statistically significant difference was observed for Hg concentration levels along the polychaete body parts.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Chemical
Changping Yang, Gang Yu, Yan Liu, Binbin Shan, Liangming Wang, Dianrong Sun, Yingbang Huang
Summary: This study analyzed six heavy metals in surface sediments from the coastal Pearl Bay to assess their distribution patterns and potential ecological risks. Results showed that the coastal Pearl Bay was not polluted by the examined metals except for Cd, which might cause contamination and ecological risk. Further research is recommended to investigate the acute source and transferring mechanisms of Cd.
Article
Environmental Sciences
Karthikeyan Perumal, Joseph Antony, Subagunasekar Muthuramalingam
Summary: The study revealed that heavy metal contamination in the study area was primarily due to Cd, with moderate contamination levels caused by Cu, Zn, Pb, and Cr. Anthropogenic inputs such as municipal wastewater, domestic sewage discharge, fishing harbour activities, and industrial and aquaculture wastes led to the increased Cd concentration in the study area. Moreover, the pollution load index indicated that the sediments were polluted by heavy metals.
ENVIRONMENTAL SCIENCES EUROPE
(2021)
Article
Environmental Sciences
Lorena Sanz-Prada, Efren Garcia-Ordiales, German Flor-Blanco, Nieves Roqueni, Rodrigo Alvarez
Summary: International institutions have established baseline levels for heavy metal concentrations in marine sediments to assess pollutant risks, but the accuracy of these values may vary when used in different areas. This study aims to determine more precise baseline levels for the Bay of Biscay and highlights the importance of defining specific baselines and threshold levels for environmental assessments.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Environmental Sciences
Xu Tian, Weikun Xu, Fuqiang Wang, Youquan Ye, Ming Liu, Honghua Shi, Dejiang Fan, Fangjian Xu
Summary: Analysis of sediment samples from Laoshan Bay, China, showed marine primary production as the main source of organic matter, while heavy metals originated from the terrestrial environment. Cd is mainly influenced by agricultural activities, while Pb contamination is likely due to fossil fuel combustion and difficult to trace over interannual variations.
MARINE POLLUTION BULLETIN
(2022)
Article
Environmental Sciences
Cong Bao, Bei Huang, Junbo Shao, Qiang Cai, Qinglin Mu, A. J. Murk
Summary: The study evaluated the development of toxic compounds in sediment and macrobenthos species in Hangzhou bay, finding that some metal elements exceeded Chinese sediment quality guidelines, posing ecological and seafood risks. The number of benthic species showed a decreasing trend, with fewer species sensitive to contamination, while crustacea species were more tolerant to pollution.
MARINE POLLUTION BULLETIN
(2021)
Article
Environmental Sciences
Haifang Huang, Bin Yang, Zhiming Ning, Shengkang Liang, Zhenjun Kang, Dongliang Lu, Jiaodi Zhou, Hu Huang, Solomon Felix Dan
Summary: The study investigated the relationship between sedimentary nutrients and poorly-bound heavy metals in the Dafengjiang River Estuary and adjacent Sanniang bay. Results showed significant positive correlations between sedimentary nutrients, water column chlorophyll-a, and poorly-bound heavy metals. The study suggests that the remobilization of poorly-bound heavy metals in surface sediments enriched by labile organic matter can enhanced nutrient availability.
MARINE ENVIRONMENTAL RESEARCH
(2023)
Article
Environmental Sciences
Rijun Hu, Yang Wang, Xiaodong Zhang, Longhai Zhu, Minyi Luo, Bo Liu, Xiaodong Yuan
Summary: This study investigated the pollution level of heavy metals (HMs), their sources, and the factors influencing their distribution in the Haiyang coastal areas. The results showed that Cr, Cu, and Pb originated from natural processes, while Zn and Hg were derived from anthropogenic activities. The distribution of HMs was mainly influenced by sediment grain size, hydrodynamic effects, and human activities.
MARINE POLLUTION BULLETIN
(2022)
Article
Environmental Sciences
Zhuanxi Luo, Zheng Chen, Zhaozheng Qiu, Yancai Li, Gijs Du Laing, Aifen Liu, Changzhou Yan
Article
Environmental Sciences
Dapeng Wang, Zhuanxi Luo, Xian Zhang, Lifeng Lin, Miaomiao Du, Gijs Du Laing, Changzhou Yan
ENVIRONMENTAL EARTH SCIENCES
(2015)
Article
Environmental Sciences
Frederik Van Koetsem, Yi Xiao, Zhuanxi Luo, Gijs Du Laing
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2016)
Article
Meteorology & Atmospheric Sciences
Zhuanxi Luo, Meirong Gao, Xiaosan Luo, Changzhou Yan
ATMOSPHERIC RESEARCH
(2016)
Article
Engineering, Environmental
Mengting Li, Zhuanxi Luo, Yameng Yan, Zhenhong Wang, Qiaoqiao Chi, Changzhou Yan, Baoshan Xing
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2016)
Article
Engineering, Environmental
Zhenhong Wang, Zhuanxi Luo, Changzhou Yan, Baoshan Xing
Article
Environmental Sciences
Zhuanxi Luo, Zhenhong Wang, Yameng Yan, Jinli Li, Changzhou Yan, Baoshan Xing
ENVIRONMENTAL POLLUTION
(2018)
Article
Environmental Sciences
Zhuanxi Luo, Mengting Li, Zhenhong Wang, Jinli Li, Jianhua Guo, Ricki R. Rosenfeldt, Frank Seitz, Changzhou Yan
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2018)
Article
Environmental Sciences
Jianhua Guo, Yinglan Cao, Zhuanxi Luo, Hongda Fang, Zhenfang Chen, Dapeng Wang, Feifei Xu, Changzhou Yan
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2018)
Article
Chemistry, Multidisciplinary
Zhenhong Wang, Zhuanxi Luo, Yamen Yan
JOURNAL OF EXPERIMENTAL NANOSCIENCE
(2018)
Article
Environmental Sciences
Anyi Hu, Shuang Li, Lanping Zhang, Hongjie Wang, Jun Yang, Zhuanxi Luo, Azhar Rashid, Shaoqing Chen, Weixiong Huang, Chang-Ping Yu
ENVIRONMENTAL POLLUTION
(2018)
Article
Forestry
Fen Huang, Xiaomei Wei, Tongbin Zhu, Zhuanxi Luo, Jianhua Cao
Summary: The bioavailable contents of heavy metals in karstic soils are of concern due to their potential threat to food safety and public health. This study investigated the total and available contents of 11 heavy metals in calcareous and red soils in a karst region in southwestern China, finding that calcareous soil had higher total but lower available heavy metal contents compared to red soil. Soil pH, Ca content, cation exchange capacity, and clay minerals were identified as primary factors influencing the distribution of heavy metals in the soils.
Article
Environmental Sciences
Alexis Kayiranga, Zhuanxi Luo, Jean Claude Ndayishimiye, Francois Nkinahamira, Eric Cyubahiro, Theogene Habumugisha, Changzhou Yan, Jianhua Guo, Zhuo Zhen, Alexandre Tuyishimire, Hildebrand Didier Izabayo
Summary: This study investigated thallium (Tl) adsorption onto biochar amended soil, demonstrating effective adsorption of Tl by biochar amendments with multi-layer adsorption playing a dominant role and chemical adsorption aiding in the process. Thallium could be efficiently adsorbed onto biochar with the presence of chemical groups promoting adsorption efficiency.
Article
Chemistry, Multidisciplinary
Zhuanxi Luo, Zhenhong Wang, Baoshan Xing
ENVIRONMENTAL SCIENCE-NANO
(2020)
Article
Multidisciplinary Sciences
Zhenhong Wang, Zhuanxi Luo, Changzhou Yan, Ricki R. Rosenfeldt, Frank Seitz, Herong Gui