南京市20种蔬菜氟、硫、氯元素含量研究

Study on the contents of F,s,and Cl in 20 vegetables grown in suburbs of Nanjing.

从１９９１年起连续三年在南京市的四个主要蔬菜基地采集了不同季节的２０种常用蔬菜样品，测定了食用部位中氟、硫、氯３种元素的含量。统计分析结果表明，三元素平均含量均明显高于清洁对照点，叶菜类蔬菜与对照差异显著，其他大部分蔬菜与对照差异不明显；三元素中氟污染最重，氯次之，硫最轻，且硫、氯含量有逐年减小趋势；工业大气污染源对蔬菜品质有一定影响，应注意蔬菜基地的合理布局。

The seasonal changes of F,S and Cl contents of eatable parts of 20 vegetable samples collected from four vegetable production bases of Nanjing were analyzed for three successive years,The results show that the average F,S,Cl contents of those sample are all higher than that of the controls The differe-ces were significant between leaf vegetable;and controls,the oth-ers did not show obvious differences.The F pollution of those vegetables is higher than Cl and S, and the Cl and S contents showed a decreasing trend. It is concluded that the industrial air pollution has certain inference on vegetable quality,and the prop-er distribution of vegetable production bases are suggested