Article
Environmental Sciences
Naveen Radhakrishnan, Sonam Taneja, Saurav Ambastha, Harsh Pipil, Anil Kumar Haritash
Summary: Sediment quality assessment is important for evaluating the quality of rivers and this study focuses on assessing heavy metal concentration in size-fractionated sediments of River Ganga and identifying sources of contamination. The results show that the sediments are contaminated and enriched with toxic metals, with Chinyalisaur, Devaprayag, and Rishikesh being classified as pollution hotspots. Natural sources contribute to aluminum and iron, while anthropogenic sources contribute to chromium, zinc, lead, nickel, copper, and cadmium. Immediate interventions are needed to control further contamination by restricting wastewater discharge into River Ganga.
MARINE POLLUTION BULLETIN
(2023)
Article
Green & Sustainable Science & Technology
Bhanu Pratap Singh, Moharana Choudhury, Palas Samanta, Monu Gaur, Maniram Kumar
Summary: The study focused on heavy metal distribution patterns and ecological risk assessment in sediment samples from the Hindon River in Muzaffarnagar Region, India. Results showed high concentrations of Zn, Pb, Cu, Ni, and Cd, with Atali A exhibiting the highest pollution levels.
Article
Environmental Sciences
Nguyen Ngoc Anh
Summary: This study aims to determine the concentrations of 23 metallic elements in superficial sediments of the Tien Hai nature reserve. Correlation analysis, principal components analysis, and positive matrix factorization were used to identify and quantify the sources of these metals. The results showed that correlation analysis was effective in identifying both allochthonous and authigenous origins of metals. The PMF model performed better than PCA in source identification. Findings suggested that weathering products from different parent rocks were the main natural sources of metals, while agricultural activities were the major anthropogenic sources. These results provide a scientific basis for environmental protection and control of sediment metal pollution.
MARINE POLLUTION BULLETIN
(2022)
Article
Multidisciplinary Sciences
Chaka Mohajane, Munyaradzi Manjoro
Summary: This study investigated sediment-associated heavy metal contamination and ecological risk along the Molopo River in Mahikeng, South Africa. Most heavy metal concentrations were below average shale, but some heavy metals were anthropogenically enriched at affected sites.
Article
Environmental Sciences
Shan Gao, Xiong Yang, Yucheng Ding, Yihui Xia, Yumiao Song, Jiaying Liu, Kewu Pi, Andrea R. Gerson
Summary: In this study, a combination of electrokinetic and chemical immobilization was used to remediate Cd and Pb polluted river sediments. The immobilization ratios for Cd and Pb were achieved by adjusting the concentrations of the immobilization reagents and the applied voltage. The enhancement effect of the electric field is mainly due to the increased contact between the immobilization reagents and the heavy metals.
Review
Engineering, Environmental
Liuwei Wang, Yuanliang Jin, Dominik J. Weiss, Nina J. Schleicher, Wolfgang Wilcke, Longhua Wu, Qingjun Guo, Jiubin Chen, David O'Connor, Deyi Hou
Summary: Stable isotope measurements hold great potential for identifying metal sources in soil, with specific isotopic signals serving as key prerequisites for source allocation. In particular, zinc and cadmium isotopes are valuable for identifying combustion-related industrial sources, while uncertainties may arise from biogeochemical low-temperature fractionation of other elements. Isotope-based source identification, in combination with other analytical approaches, can offer more accurate results for understanding the temporal changes of metal accumulation in soil systems.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Environmental Sciences
Yu Wang, Luyu Liang, Xinyi Chen, Yi Zhang, Fubin Zhang, Fei Xu, Tuo Zhang
Summary: Due to fast-paced urbanization, industrial sand mining activities have put immense pressure on the environment, particularly leading to severe environmental problems in aquatic ecosystems. However, there is still incomplete understanding of the impact of sand mining on the remobilization of heavy metals in river sediments. This study extensively investigated this effect in the Jialing River using various techniques and found that sand mining activities resulted in the accumulation and remobilization of lead and cadmium.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2022)
Article
Environmental Sciences
Abdelwaheb Aydi, Samir Ghannem, Ahmed Nasri, Rania Hessine, Amine Mezni
Summary: This study evaluated the contamination status of heavy metals in surface sediments along the Bizerte coastal line. It found that the pollution levels of Pb and Cd were moderate and required more attention as the main pollution factors. Other heavy metals did not cause pollution. Hierarchical cluster analysis was also used to identify the influence of anthropogenic activities on the surface sediment.
MARINE POLLUTION BULLETIN
(2022)
Article
Environmental Sciences
Xiaohong Fang, Bo Peng, Zhaoliang Song, Sicheng Wu, Danting Chen, Yafang Zhao, Jing Liu, Yanan Dai, Xianglin Tu
Summary: Analysis of major and trace elements in sediments from the Four River inlets of Dongting Lake revealed differences in element compositions, which are influenced by source lithology, chemical weathering, hydrological sorting, and anthropogenic processes. The findings suggest the need for a geochemical background scheme for future assessment of heavy metal contamination in the watershed sediments.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Environmental Sciences
Reyhane Madadi, Nezha Mejjad, Gabriel Enrique De-la-Torre
Summary: Surface sediment and water samples were collected from Musa Estuary and analyzed for metals concentrations using ICP-MS. Cd had the highest contribution to ecological risk (49% based on PERI index). The Tessier procedure revealed that with increasing contamination, exchangeable and carbonate fractions of Cd, Pb, Ni, Zn, and Cu increased. Cd and Pb were found to have a high risk of release based on the mobility factor and individual contamination factor indices. Cluster analysis showed different sources for different metals. The adsorption of Co, Ni, V, and Zn to sediments was influenced by Eh/pH, DOC/temperature, and salinity.
MARINE POLLUTION BULLETIN
(2023)
Article
Biodiversity Conservation
Siddhant Dash, Smitom Swapna Borah, Ajay S. Kalamdhad
Summary: This study aimed to evaluate sediment pollution loadings and ecological risks, with three objectives. Through hierarchical clustering and principal component analysis, it was found that wetlands are most affected during the post-monsoon season, with most sites falling under moderate risk category. Cd was identified as the primary contributor to ecological risk. Chemical speciation analyses revealed different heavy metals' availability forms in sediment, highlighting the negative impact of Cr, Mn, and Mg on aquatic ecology.
ECOLOGICAL INDICATORS
(2021)
Article
Multidisciplinary Sciences
Zhifeng Huang, Saisai Zheng, Yan Liu, Xingru Zhao, Xiaocui Qiao, Chengyou Liu, Binghui Zheng, Daqiang Yin
Summary: Metal pollution in the Xiangjiang River, an important drinking water source in southern China, is mainly from anthropogenic activities, with As, Cd, Sb, and Mn removal being crucial for safety. Water samples show high ecological risk, and children are more susceptible to the non-carcinogenic risk of dissolved metals.
SCIENTIFIC REPORTS
(2021)
Article
Environmental Sciences
Liu Baolin, Dong Deming, Hua Xiuyi, Dong Weihua, Li Ming
Summary: The study found that the concentrations of heavy metals in the main stream and tributaries of the Songhua River are mainly influenced by industrial activities and urban emissions, with Cd posing a potentially high ecological risk.
CHINESE GEOGRAPHICAL SCIENCE
(2021)
Article
Environmental Sciences
Cleber Pinto da Silva, Estevan Luiz da Silveira, Daniele Cristina Hass Seremeta, Danilo Gabriel dos Santos Matos, Andre Martins Vaz-dos-Santos, Sandro Xavier de Campos
Summary: The study found that anthropic activities have altered the natural rates of metal mobilization and deposition in the Verde River basin, resulting in metal concentrations in water, riverbed sediments, and fish tissues exceeding healthy limits set for aquatic life and human uses. This poses a high ecological and health risk for the region.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Engineering, Environmental
Yuezhao Li, Haiyang Chen, Liuting Song, Jin Wu, Wenchao Sun, Yanguo Teng
Summary: This study demonstrated that heavy metal enrichment has significant effects on sediment microbiomes, antibiotic resistance genes, and metal resistance genes. Source apportionment and a modified risk model showed that human activities primarily contribute to the ecological risks of metals in urban rivers.
JOURNAL OF HAZARDOUS MATERIALS
(2021)