柳江河镉污染后沿岸居民尿镉含量调查

Urinary cadmium contents in rural residents living in areas along Liujiang river after a cadmium pollution event

目的 通过对柳江河沿岸村屯居民尿镉含量的调查研究,评价柳江河镉污染对柳江河沿岸居民健康的影响程度。方法 根据《环境镉污染健康危害区判定标准》,2014年选择长期定居柳江河沿岸和对照区居民划分为25~34、35~44、45~54岁3个年龄组,男女性别各半作为观察人群,现场采集暴露区212人和对照区210人的尿液进行尿镉测定。结果 暴露区居民尿镉含量中位数（0.30μg/g肌酐）与对照区居民尿镉含量中位数（0.33μg/g肌酐）无统计学差异（Z=-0.713,P=0.476）。按年龄-性别组比较,对照区男性3个年龄组间尿镉含量中位数比较差异有统计学意义（χ^2=10.247,P=0.006）、暴露区男女尿镉含量中位数比较差异有统计学意义（Z=-4.809,P=0.000）。结论 柳江河镉污染对柳江河沿岸居民尿镉含量的影响不明显。

Objective To detect contents of urinary cadmium among residents living in rural areas along Liujiang river after a river water cadimium pollution event and to evaluate the health impact of the pollution. Methods Areas polluted by the pollution event were determined based on ＂Criteria for Identification of Health Hazard Area of Environmental Cadimium Pollution＂. Totally 212 permanent residents aged 25 -54 years （half male and half female） in rural areas polluted were recruited and 210 age- and gender-matched residents living in areas more than 30 kilometers distant from the polluted area were selected as controls. Urine samples were collected for urianry cadimium detection among all the partici-pants. Results No significant difference was observed in the median of urinary cadmium between the residents from polluted and control areas （0. 30 vs. 0. 33 μg/g cr, Z = -0. 713 ;P = 0. 476 ） ;however, significant age group difference in the median of urinary cadmium among the the males （χ^2 = 10. 247, P = 0. 006 ） and gender difference （ Z = - 4. 809, P = 0. 000） were observed among the residents from the polluted areas. Conclusion The cadimium pollution event had no significant impact on urinary cadimium content among residents living in rural areas along Liujiang river.