Risk Assessment and Countermeasures of Heavy Metals in Drinking Water Environment of Guizhou Province

Yang, Bing Xiang; Yang, Hong; Zhang, Chengmei; Wang, Yajie

doi:10.1051/e3sconf/202124502012

Cited by 2 publications

(2 citation statements)

References 3 publications

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“…We did not replace nor add PVC pipes during the experimental period. The final exposed glyphosate concentration fell within the range of reported concentrations (0-710 μg/L) in natural waterbodies with similar habitats or in the same area as this study (Lu et al, 2015;Yang, 2015).…”

Section: Field Experimental Treatment Set-upsupporting

confidence: 83%

Anthropogenic Carrion Subsidy and Herbicide Glyphosate Depressed Leaf-Litter Breakdown: Effects on Environmental Health in Streams

Xiang

Zhang

Atkinson

et al. 2022

Front. Environ. Sci.

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Terrestrial leaf-litter (LL) inputs impose great bottom-up effects on freshwater ecosystems by fueling detritus-based food webs, affecting macroinvertebrate and microbial communities, and influencing ecosystem functioning. However, increasing intensive anthropogenic activities including the inputs of herbicide glyphosate disturb the breakdown of LL in streams. In this study, an anthropogenic carrion subsidy (chicken meat) and glyphosate (a stressor) were used to investigate their individual and combined effects on LL breakdown in urban streams and forest streams in China. We found that: 1) carrion subsidy decreased LL breakdown rate in both urban and forest streams and increased total and predator richness in forest streams, the reduced LL breakdown rates may be attributed to the foraging shift of macroinvertebrates from LL to carrion subsidy; 2) glyphosate depressed LL breakdown rate in forest but not in urban streams, the reduced LL breakdown rate may be caused by the negative effects on microbes; 3) forest streams showed significantly higher LL breakdown rates in both coarse and fine mesh bags than urban streams which were induced by the high dissolved oxygen (DO) and collector-gatherer richness. Our results provide evidence that LL breakdown in streams is sensitive to inputs of anthropogenic carrion subsidy and glyphosate through the impacts on macroinvertebrates and microbes, respectively. Furthermore, this study underscores the importance of local macroinvertebrate and microbial communities when assessing the responses of stream ecosystem functioning and macroinvertebrate communities to multiple stressors, as the individual and combined effects of stressors can be site-specific in streams with different physical characteristics and biological communities.

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Section: Field Experimental Treatment Set-upsupporting

confidence: 83%

Anthropogenic Carrion Subsidy and Herbicide Glyphosate Depressed Leaf-Litter Breakdown: Effects on Environmental Health in Streams

Xiang

Zhang

Atkinson

et al. 2022

Front. Environ. Sci.

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“…Biological risks that target water resources and facilities, both covertly and openly through biological and chemical agents, threaten public health infrastructure. Many experts consider the possibility of using biological weapons to target water resources and networks very high, so it is necessary to prepare all responsible institutions against the possible occurrence of these hazards [8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Assessment and sensitive analysis of biological water risks in water resources with application of classical mass transfer computations

Jalali¹,

Gheibi²,

Aghlmand³

et al. 2021

Ann Biomed Sci Eng

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Due to the urgent need for water in all parts of industrial or developing societies, water supply, and transmission facilities are suitable targets for biological risks. Given that even a short interruption in water supply and water supply operations has a great impact on daily activities in the community, the deliberate contamination of urban water resources has irreparable consequences in the field of public health, and the economy of society will follow. Unfortunately, most officials in the public health control departments in our country have received limited training in detecting accidental or intentional contamination of water resources and dealing with the spread of waterborne diseases both naturally and intentionally. For this reason, there is low preparedness in the responsible agencies to deal with waterborne diseases during biological risks. In the first step of this research, a review study has been conducted on water biological risks and operational strategies to deal with them. In the following, it has studied how Escherichia coli (E. coli) bacteria spread in aqueous media. In this regard, the kinetic model of the studied microorganism was analyzed based on the implementation of (Fick Law) in polar coordinates and the combination of (Dirac Distribution) with (Legendre polynomial) distribution. Finally, after studying the factors affecting the microbial pollutant emission coefficient, the effects of all three factors of linear velocity, linear motion time period, and angle of motion on the pollutant emission flux and biofilm diffusion time in the water supply network environment were investigated. Studies have shown that the linear velocity parameter of Escherichia coli with a nonlinear relationship has the greatest effects on the release of microbial contaminants.

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Risk Assessment and Countermeasures of Heavy Metals in Drinking Water Environment of Guizhou Province

Cited by 2 publications

References 3 publications

Anthropogenic Carrion Subsidy and Herbicide Glyphosate Depressed Leaf-Litter Breakdown: Effects on Environmental Health in Streams

Anthropogenic Carrion Subsidy and Herbicide Glyphosate Depressed Leaf-Litter Breakdown: Effects on Environmental Health in Streams

Assessment and sensitive analysis of biological water risks in water resources with application of classical mass transfer computations

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