Impact of intensive mining on the distribution of heavy metals in water and sediment of Anning River, southwest China

Shi, Zhou; Wang, Xinyu; Shi, Yue; Ni, Shijun; Li, Yunzhen; Wang, Dewei

doi:10.1144/geochem2017-054

Cited by 7 publications

(3 citation statements)

References 20 publications

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“…The results show that the correlation coefficient is R 2 = 0.6538 (sediments) and R 2 = 0.7529 (river water), indicating that U and Mo in sediments and water had similar sources, especially natural mineral weathering (Figure 5). The results were consistent with the findings of Kayzar et al (2014) [23,48]. On this basis, it is suggested that the high content of U downstream of the mining area may be the result of U enrichment in molybdenite.…”

Section: Migration Of U and Mo Downstreamsupporting

confidence: 89%

Distribution of Uranium and Molybdenum in River Sediment near Molybdenite Mining Region: A Case Study in SW China

Zhang,

Wang,

Wang

et al. 2023

Minerals

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This work aims to understand the distribution and migration mechanisms of U and Mo between surface sediment and water in acid mine drainage (AMD) regions near a molybdenum mining region. A series of river sediment and water samples near the Jinduicheng mining area, one of the largest deposits of molybdenite ore in Asia, were collected and analyzed. Our results indicate that: (1) The pH value of river water samples increases with distance from upstream to downstream, while the pH has poor correlation with Mo and U; (2) The content of Mo and U in the sediment are significantly higher than the background value, which suggests potential pollution; (3) The content of Mo and U in the water and sediments in the lower reaches of the Wenyu river is significantly linearly related with the distance from the mining area, suggesting that AMD is a potential source; (4) BCR analysis shows that Mo in river sediments mainly existed as the residual, while U mainly existed as the non-residual; (5) The distribution coefficient Kd(Mo) exceeds Kd(U), indicating that Mo is enriched in sediments while U is more prone to porewater.

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Section: Migration Of U and Mo Downstreamsupporting

confidence: 89%

Distribution of Uranium and Molybdenum in River Sediment near Molybdenite Mining Region: A Case Study in SW China

Zhang,

Wang,

Wang

et al. 2023

Minerals

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“…A study from Senegal (Niane et al 2019) described an increased Hg content in the sediment (up to 1.16 mg/kg) on the Gambia River in intensive mining areas. Similar studies from other parts of the world (Shi et al 2019;Beck et al 2020) describe the impact of the mining process on the environment. Since Hg is one of the most widespread contaminants in aquatic ecosystems, the Minamata Convention on mercury was signed by more than 120 countries and came into force in 2017 in order to prevent the risks connected to environmental mercury exposure.…”

Section: Heavy Metals and Intensive Miningmentioning

confidence: 74%

Does aquatic sediment pollution result in contaminated food sources?

2021

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The sediment pollution of the aquatic environment by waste due to anthropogenic activity is of an increasing concern. The contaminants coming from the aquatic environment can enter the aquatic food chain and accumulate in the tissues of fish and shellfish used for human consumption. The aim of this study was to sum up the current level of knowledge concerning the pollution of aquatic sediments and its transfer to aquatic foods as well as to indicate whether such contamination has the potential to affect the health and welfare of aquatic organisms as well as the quality and safety of the species intended for human consumption. Based on the results of scientific studies, the European Food Safety Authority, and the Rapid Alert System for Food and Feed, contamination of fish and seafood occurs predominantly through their diet and the levels of bioaccumulative contaminants are higher in fish which rank higher in the food chain. Contamination of aquatic habitats can not only significantly affect behavior, development, and welfare of aquatic organisms, but it can also affect the safety of fish and seafood for human consumption.

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“…The topography is marked by higher latitudes in the northwest and lower latitudes in the southeast. The Anning Valley Great Plains rank as the second largest plains in Sichuan Province [ 31 ]. Within the basin drainage area, the river serves not only as the primary source of drinking water for the towns along the river but also as an important water source for agricultural irrigation.…”

Section: Introductionmentioning

confidence: 99%

Antibiotics in Surface Sediments from the Anning River in Sichuan Province, China: Occurrence, Distribution, and Risk Assessment

Zhou,

Kang,

Lin

et al. 2024

Toxics

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The occurrence, distribution, and ecological risk assessment of 36 antibiotics from five groups, including macrolides (MLs), fluoroquinolones (FQs), tetracyclines (TCs), amphenicols (APs), and sulfonamides (SAs), were investigated for the first time in the Anning River, Sichuan Province, China. The results show that antibiotics were widely present in the sediments of the Anning River, with a total of 22 antibiotics detected. FQs were among the most abundant antibiotics, followed by TCs, MLs, APs, and SAs. The total concentrations of antibiotics in surface sediments varied from 0.05 to 53.35 ng/g, with an average of 8.09 ng/g. Among these groups, MLs, FQs, and TCs emerged as the predominant classes of antibiotics. The midstream sediments showed the highest residual levels of antibiotics, with lower levels observed in the downstream and upstream sediments. Anthropogenic activities, such as human clinical practices and animal breeding, might be sources of antibiotics released into the river. An ecological risk assessment revealed that trimethoprim from the SA group exhibited high risks, and MLs showed medium risks in the Anning River, whereas most antibiotics presented minimal to low risks. This study provides valuable information on antibiotic pollution in the upstream region of the Yangtze River, and future management measures are needed for the Anning River.

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Impact of intensive mining on the distribution of heavy metals in water and sediment of Anning River, southwest China

Cited by 7 publications

References 20 publications

Distribution of Uranium and Molybdenum in River Sediment near Molybdenite Mining Region: A Case Study in SW China

Distribution of Uranium and Molybdenum in River Sediment near Molybdenite Mining Region: A Case Study in SW China

Does aquatic sediment pollution result in contaminated food sources?

Antibiotics in Surface Sediments from the Anning River in Sichuan Province, China: Occurrence, Distribution, and Risk Assessment

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