Health risk assessment of heavy metals for edible parts of vegetables grown in sewage-irrigated soils in suburbs of Baoding City, China
- 16 July 2011
- journal article
- Published by Springer Science and Business Media LLC in Environmental Monitoring and Assessment
- Vol. 184 (6), 3503-3513
- https://doi.org/10.1007/s10661-011-2204-6
Abstract
With the long-term application of wastewater to vegetable production fields, there is concern about potential health risks of heavy metals contaminating the edible parts of vegetables grown in contaminated soils in the suburban areas of Baoding City, China. The average concentration of elemental Zn in sewage-irrigated soil was the highest (153.77 mg kg−1), followed by Pb (38.35 mg kg−1), Cu (35.06 mg kg−1), Ni (29.81 mg kg−1), and Cd (0.22 mg kg−1) which were significantly higher (P < 0.05) than those in the reference soil. The results showed that long-term sewage irrigation had led to a growing accumulation of heavy metals in the soils, especially for Cd, Zn, and Pb. Furthermore, the concentrations of elemental Cd, Zn, and Ni in vegetables (e.g., Beassica pekinensis L., Allium fistulosum L., Spinacia oleracea L.) collected from the wastewater-irrigated soils exceeded the maximum permissible limits, and this also increased the daily intake of metals by food. However, compared with the health risk index of <1 for heavy metals, the ingestion of vegetables from the soils irrigated with sewage effluent posed a low health risk. Nevertheless, heavy metal concentrations should be periodically monitored in vegetables grown in these soils together with the implementation effective remediation technologies to minimize possible impacts on human health.Keywords
This publication has 28 references indexed in Scilit:
- Heavy metal accumulation in vegetables irrigated with water from different sourcesFood Chemistry, 2008
- Spatial distribution of Cd and Cu in soils in Shenyang Zhangshi Irrigation Area (SZIA), ChinaJournal of Zhejiang University-SCIENCE B, 2008
- Impact of untreated wastewater irrigation on soils and crops in Shiraz suburban area, SW IranEnvironmental Monitoring and Assessment, 2007
- Concentrations and chemical forms of heavy metals in urban soils of Shanghai, ChinaSoil Science and Plant Nutrition, 2007
- Long-term fate of exogenous metals in a sandy Luvisol subjected to intensive irrigation with raw wastewaterEnvironmental Pollution, 2007
- Heavy Metal Load Of Soil, Water And Vegetables In Peri-Urban DelhiEnvironmental Monitoring and Assessment, 2006
- A multivariate analysis of the accumulation and fractionation of major and trace elements in agricultural soils in Hidalgo State, Mexico irrigated with raw wastewaterEnvironment International, 2005
- Speciation and mobility of Zn, Cu and Pb in a truck farming soil contaminated by sewage irrigationJournal de Physique IV, 2003
- Diffuse agricultural water pollution in IndiaWater Science & Technology, 1999
- Nutrient inputs to soils and their uptake by alfalfa through long‐term irrigation with untreated sewage effluent in MexicoSoil Use and Management, 1998