In order to evaluate the heavy metal contamination and the safe levels of vegetables, Six root vegetables in hinterland of reservoir area were detected by microwave digestion-flame atomic absorption spectrophotometer, the pollution of Pb, Cd, As, Sn, Cu and Cr in vegetables was evaluated by single pollution index and comprehensive pollution index. The result showed that the content of As, Sn and Cr in root vegetables on selling exceeded the standard, and were over the standard 27.08%, 12.50% and 8.33%, respectively. Single pollution index showed that as in carrot, Cr in carrot and radish were in the warning level, still in controlled range. Light pollution of as to radish and lotus, and severe pollution of Cr, Sn to lotus. Comprehensive pollution index showed that potato, sweet potato, carrot and asparagus lettuce were not contaminated, radish was light polluted and lotus was severe polluted by heavy metal.
Longbing, QIN; Zuxiang, Li; Yurong, YANG; Yanjun, XIANG; Tianpeng, GOU; and Huali, TANG
"Analysis and evaluation on heavy metal content of root vegetables in three gorges reservoir,"
Food and Machinery: Vol. 31:
3, Article 17.
Available at: https://www.ifoodmm.cn/journal/vol31/iss3/17
 Luo Chun-ling, Liu Chuan-ping, Wang Yan, et al. Heavy metal contamination in soils and vegetables near an e-waste processing site, south China［J］. Journal of Hazardous Materials, 2011(186): 481～490.
 Akan J C, Abdulrahman F I, Ogugbuaja V O, et al. Heavy metals and anion levels in some samples of vegetable grown within the vicinity of challawa industrial area, kano state, nigeria［J］. American Journal of Applied Sciences, 2009, 6(3): 534～542.
 Huang Biao, Shi Xue-zheng, Yu Dong-sheng, et al. Environmental assessment of small-scale vegetable farming systems in peri-urban areas of the yangtze river delta region, China［J］. Agriculture, Ecosystems and Environment, 2006(112): 391～402.
 Zhu Fang-kun, Fan Wen-xiu, Wang Xue-jing, et al. Health risk assessment of eight heavy metals in nine varieties of edible vegetables oils consumed in China［J］. Food and Chemical Toxicology, 2011(49): 3 081～3 085.
 Fang Shi-bo, Hu Hao, Sun Wan-chun, et al. Spatial variations of heavy metals in the soils of vegetable-growing land along urban-rural gradient of Nanjing, China［J］. Int. J. Environ. Res. Public Health, 2011(8): 1 805～1 816.