Evaluation of Trace Element Contamination and Health Risks of Medicinal Herbs Collected from Unpolluted and Polluted Areas in Sichuan Province, China

2021 ◽  
Author(s):  
Jianing Gao ◽  
Dan Zhang ◽  
Ernest Uwiringiyimana ◽  
Ram Proshad ◽  
Aysenur Ugurlu
Keyword(s):  
Trace Element ◽  
Health Risks ◽  
Sichuan Province ◽  
Medicinal Herbs ◽  
Trace Element Contamination

scholarly journals Variability in plant trace element uptake across different crops, soil contamination levels and soil properties in the Xinjiang Uygur Autonomous Region of northwest China

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Weiguo Liu ◽  
Xiaodong Yang ◽  
Luchun Duan ◽  
Ravi Naidu ◽  
Kaihong Yan ◽  
...  
Keyword(s):  
Trace Element ◽  
Health Risks ◽  
Pollution Index ◽  
Northwest China ◽  
Pollution Level ◽  
Autonomous Region ◽  
Xinjiang Uygur Autonomous Region ◽  
Exposure Pathway ◽  
Farmland Soils ◽  
Trace Element Contamination

AbstractThis study investigated contamination status of eight trace elements (As, Cd, Cr, Hg, Pb, Cu, Zn and Ni) in farmland soils and crops at 535 sites across the Xinjiang Uygur Autonomous Region, Northwest China. Land use types of the sampling sites included vegetable patch, grain field and orchard. Our experimental results indicated all farmland soils were considered as trace element contamination based on the Nemerow comprehensive pollution index (NCPI > 1). However, 91.97% of the crop samples were uncontaminated according to the Chinese Risk Control Standard. Soils from the vegetable patch showed higher pollution level comparison with that from grain field and orchard. Health risks for both non-carcinogenic and carcinogenic risks were calculated through crop ingestion exposure pathway. Grain samples showed highest health risks, followed by melon and fruit, and vegetables. The health risks of crops were mainly driven by Cr and Cd. Crop consumption may pose risks for children but not adults. The source of trace element contamination in the different farmland soils varied and may be attributed to the different agricultural activities. Plant type had a greater influence on the trace element accumulation in crops compared with soil trace element contents and physicochemical properties.

Anthropogenic and climate induced trace element contamination in a water reservoir in northwestern Mexico

2021 ◽  
Author(s):  
Roberto Ochoa-Contreras ◽  
Martín Enrique Jara-Marini ◽  
Joan-Albert Sanchez-Cabeza ◽  
Diana María Meza-Figueroa ◽  
Libia Hascibe Pérez-Bernal ◽  
...  
Keyword(s):  
Trace Element ◽  
Water Reservoir ◽  
Northwestern Mexico ◽  
Trace Element Contamination
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