Characteristics and evaluation of heavy metal pollution in a soil–wheat system of an arid oasis city in northwest China

Efficient elimination of Hg(ii) from water bodies with acid-modified magnetic biomass spent tea leaves: conditional optimization and application

“…1 This type of pollution mainly comes from industrial production, mining, smelting, municipal waste treatment and other aspects. 2,3 Some toxic elements such as mercury, cadmium, lead, and chromium have the characteristics of persistence, high enrichment, high biological toxicity, and easy migration 4,5 and are heavily discharged into the environment, resulting in serious harm to humans and the ecosystems. 6 Among these sources, industrial wastewater is one of the main sources.…”