制革工业园区周围小麦和玉米的铬污染评价
Assessment on Chromium Pollution in Wheat and Corn around Leather Industrial Parks
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摘要:
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》(GB 2762-2005)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0.74 mg/kg,而对照区为0.18 mg/kg,差异有统计学意义(P<0.05);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1。 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。 Abstract: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.
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