制革工业园区周围小麦和玉米的铬污染评价

目的]了解制革工业园区周围粮食的铬污染程度，为粮食铬污染防治策略制定提供背景数据。方法]采集制革园区周围农田所产粮食（36份）和对照区种植粮食样品（22份），分别检测其铬含量，采用《食品中污染物限量》（GB2762-2005）计算其超标率，采用单因子污染指数法评价粮食中铬污染程度。结果]制革工业园区周围农田所产粮食的铬含量为0．74mg／kg，而对照区为0．18mg／kg，差异有统计学意义（P〈O．05）；该工业园区周围种植粮食铬超标率为16．66％，明显高于对照区（0％）（P〈0．05）；小麦和玉米单因子污染指数平均值均小于l。结论]该制革工业园区周围部分种植点粮食受到了铬污染，可能会对暴露人群构成危害。

Assessment on Chromium Pollution in Wheat and Corn around Leather Industrial Parks

Objective ] To investigate the level of chromium in the crops planted around leather industrial parks （LIPs）, and to provide scientific data for the prevention and control of chromium pollution in food. Methods ] Samples of crops planted in the vicinity of LIPs （36 samples） and in a control area （22 samples） were collected to determine the levels of chromium. The unqualified rate of chromium was calculated according to the Maximum Levels of Contaminants in Foods （GB 2762--2005）. The degree of food pollution was evaluated using single factor pollution index. Results ] The average levels of chromium in crops around the LIPs and in the control area were 0.74 mg/kg and 0.18 mg/kg respectively （P 〈 0.05）. The unqualified rate of chromium in the crops samples from the LIPs was 16.66% which was significantly higher than that in the crops samples from the control area （0%） （P 〈 0.05）. The single factor pollution indices for both wheat and corn were lower than 1. Conclusion ] Some of the crops grown around the leather industrial parks are polluted by chromium, and it is possible to have adverse health effects on the exposed population.