부산대학교 도서관

To assess the environmental quality and health risk of heavy metals in suburban vegetable fields under different cultivation patterns in an industrial city of China, a total of 28 and 22 soil samples from open fields and greenhouses, respectively, were collected in a suburban area and the contents of lead (Pb), chromium (Cr), copper (Cu), nickel (Ni), zinc (Zn), cadmium (Cd), and arsenic (As) were measured. The results showed a degree of accumulation of heavy metals in suburban vegetable soils when compared with background values: the concentrations of Pb, Cr, Cu, and Zn in greenhouse soils were higher than in open fields, especially for Zn. Some agricultural soils were even moderately to heavily contaminated by Cr, Cu, and Cd, and the percentages of greenhouse soils within class 1 and class 2 pollution levels were significantly higher than open fields for Pb, Cu, and Zn. Of note, children had the higher noncarcinogenic health risk for the exposure to toxic heavy metals than other populations, and Cr and As were of most concern with regard to the potential occurrence of health effects, but the carcinogenic and noncarcinogenic health risk values calculated in our study were both within the expected range for children and adults.