Detection and Analysis of Heavy Metals in Vegetables in Xinzhu Vegetable Base

摘要

In order to study the pollution of heavy metals and the safety of vegetables in Baqiao district, Xi'an, the contents of Cu, Zn, Cr and Pb in 8 fresh vegetables were determined. The results show that: (1) Most of the contents of heavy metals in vegetables in Xinzhu vegetable base did not exceed the standard, while Pb is higher than national standards, which should be addressed; (2) The contents of heavy metals in eggplant vegetables was low, and the contents of heavy metals in leafy vegetables were higher; (3) By single factor pollution index evaluation method, 8 kinds of vegetables were not polluted by Cu, Zn, Cr, three kinds of heavy metals, Cr content should be monitored; Pb content is very high, and it caused a serious pollution. Pepper and tomato can be obtained by Nemerow index method, the both of vegetables in the cordon, the index of eggplant, cucumber, chrysanthemum, romaine lettuce, Oilseed rape, tomato and leek belongs to light pollution, the relevant departments should immediately carry out pollution prevention and pollution treatment and corresponding action.