scholarly journals Distribution, water quality, and health risk assessment of trace elements in three streams during the wet season, Guiyang, Southwest China

Elem Sci Anth ◽  
2021 ◽  
Vol 9 (1) ◽  
Author(s):  
Jue Zhang ◽  
Qixin Wu ◽  
Zhuhong Wang ◽  
Shilin Gao ◽  
Huipeng Jia ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Trace Elements ◽  
Health Risk ◽  
Trace Element ◽  
Human Activities ◽  
Southwest China ◽  
Environmental Changes ◽  
Urban Stream ◽  
Human Beings ◽  
Element Concentrations

Trace element pollution derived from human activities in aquatic systems has raised widespread concerns due to its toxicity, persistence, and bioaccumulation. In this article, we presented a systematic investigation of the anthropogenic overprints on trace elements geochemistry in three streams of the human-impacted (agriculture, urban area, and abandoned mining), located at Lake Aha, Guiyang, Southwest China. Concentrations reported in the study demonstrated that the abandoned mining stream showed the highest trace elements (608.16 μg/L), followed by the urban stream (566.11 μg/L) and agricultural stream (457.51 μg/L). Nonmetric multidimensional scaling (NMDS), used to display sampling dates and trace elements, showed discernible temporal variation in trace element concentrations. Trace element concentrations in months (May, September, and October) with less rainfall were higher than in June, July, and August indicated by NMDS. Principal component analysis (PCA) had shown that As, Ba, Mo, and Zn were mainly impacted by the urbanized streams, and Fe and Sr influenced by the mine. Risk assessment of human beings to trace elements demonstrated that As may pose a detrimental health risk. The research found that trace elements were potential tracers for the presence of human activities and environmental changes.

scholarly journals Bedrock and Quaternary sediment geochemistry and biodiversity in Eastern Fennoscandia and Estonia

2010 ◽  
Vol 53 (1) ◽  
pp. 35-52 ◽  
Author(s):  
Ylo Systra
Keyword(s):  
Trace Elements ◽  
Trace Element ◽  
Sea Water ◽  
Sediment Geochemistry ◽  
Human Beings ◽  
Terrestrial Plants ◽  
Quaternary Sediment ◽  
Element Concentrations ◽  
Crystalline Bedrock ◽  
Forms Of Life

Bedrock and Quaternary sediment geochemistry and biodiversity in Eastern Fennoscandia and EstoniaCrystalline bedrock and Quaternary sediments are the parent materials for soil, which is a substrate for plant roots and also a supplier of nutrients. Through interactions within the bedrock-soil-plant-animal-human beings system, bedrock geology and geochemistry influence all forms of life on the planet. There are 11 major elements or macronutrients that are nutritionally essential for plants and animals in constructing and maintaining cells and tissues, and up to 43 trace elements or micronutrients involved in the regulation of metabolic processes. Element concentrations in soils reflect those of parent rocks, but for healthy growth and development of plant and animal tissues there are very strict constraints on trace element concentrations. Chemical analysis of different organic materials shows that all forms of life, marine and terrestrial plants and animals, and bacteria consist of comparable proportions of the of macronutrients: O, H, C, N, P, S, Ca, Mg, K, Na, Cl, as well as trace elements. Some differences are noted in elements that are more available in sea water (Mg, I, Br, Sr, Fe, Pb) or are essential for life outside of water (terrestrial animals need more Ca and P for stronger skeletons, etc.). Limestone and dolostone of northern and central Estonia are rich in Ca and Mg, whereas the sandstones that predominate in southern Estonia consist mainly of quartz (SiO2) and contain very few nutrients. Glacial activity in Fennoscandia transported predominantly Si-rich granite rock material to Estonia, in which trace element concentrations are very low, as in the local bedrock. The bedrock geochemistry, Quaternary cover and their influence on vegetation in some selected areas in Fennoscandia and Estonia are discussed.

A comparison of trace element concentrations in surface and deep water of the Keban Dam Lake (Turkey) and associated health risk assessment

2020 ◽  
Vol 190 ◽  
pp. 110012
Author(s):  
Özgür Canpolat ◽  
Memet Varol ◽  
Özlem Öztekin Okan ◽  
Kürşad Kadir Eriş ◽  
Metin Çağlar
Keyword(s):  
Risk Assessment ◽  
Health Risk ◽  
Trace Element ◽  
Health Risk Assessment ◽  
Deep Water ◽  
Element Concentrations

scholarly journals Total and bioaccessible heavy metals in cabbage from major producing cities in Southwest China: health risk assessment and cytotoxicity

RSC Advances ◽  
2021 ◽  
Vol 11 (20) ◽  
pp. 12306-12314
Author(s):  
Mengying Li ◽  
Yishu Qin ◽  
Chengchen Wang ◽  
Kun Wang ◽  
Zhihua Deng ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Risk Assessment ◽  
Health Risk ◽  
Brassica Oleracea ◽  
Health Risk Assessment ◽  
Southwest China

We analyzed the total and bioaccessible concentrations of heavy metals in a popular vegetable cabbage (Brassica oleracea) from producing cities in Yunnan, Southwest China and assessed their health risk based on both bioaccessibility and cytotoxicity.

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