title: Comparative study of heavy metals in "soil-wheat" systems between sewage-irrigated areas and clean-water-irrigated areas in suburban Beijing.
abstract: After years of irrigating farmland with wastewater, concern is increasing about health risks from heavy metals contaminating wheat grown in sewage-irrigated soils in suburban areas of Beijing, China. The study discussed in this article aimed to compare the characteristics of heavy metal distribution in a sewage-irrigated "soil-wheat" system with those from a clean-water-irrigated area by collecting and analyzing samples from both areas. The results indicated that the average concentrations of copper, chromium, lead, and zinc in sewage-irrigated soil were higher than the values in the clean-water-irrigated region. Irrigation with wastewater could lead to increased bioconcentration factors. Therefore, issues of food contamination caused by sewage irrigation deserve more attention.
authors.forename: Ye
authors.initials: Y
authors.lastname: Zhao
authors.forename: Sha-Sha
authors.initials: SS
authors.lastname: Han
authors.forename: Zhi-Fan
authors.initials: ZF
authors.lastname: Chen
authors.forename: Jing
authors.initials: J
authors.lastname: Liu
authors.forename: Honq-Xia
authors.initials: HX
authors.lastname: Hu
mesh_terms: D000383:Agriculture / Q000379:methods*; D019216:Metals, Heavy / Q000032:analysis* / Q000378:metabolism; D012989:Soil Pollutants / Q000032:analysis* / Q000378:metabolism; D013054:Spectrophotometry, Atomic; D014908:Triticum / Q000254:growth & development / Q000378:metabolism*; D062065:Wastewater / Q000032:analysis*; D014874:Water Pollutants, Chemical / Q000032:analysis* / Q000378:metabolism
chemical_list: D019216:Metals, Heavy; D012989:Soil Pollutants; D062065:Wastewater; D014874:Water Pollutants, Chemical