上海近郊工业污染区蔬菜提取物致突变性调查

AN INVESTIGATION ON MUTAGENICITY OF VEGETABLE EXTRACTS IN THE INDUSTRIAL POLLUTION AREAS OF SHANGHAI SUBURBS

应用Ames致突变性试验,采样测定了不同工业污染区12个蔬菜(青菜、叶用莴苣、芹菜、菠菜)样品。结果表明,生长于化工区受石油化学工业粉尘影响的二个样品呈阳性反应;受染料化学工业废水及制革工业废水污染的二个青菜样品也有这一趋势。青菜中镉污染严重的样品及其它样品的Ames试验结果皆呈阴性。供试蔬菜中苯并(a)芘平均含量为1.39μg/kg,最高为3.57μg/kg。

Twelve vegetable extract samples covering four species (pakchoi, celery, spinach and leaf lettuce) cultivated in different industrial pollution areas in Shanghai suburbs were specially prepared to detect their mutagenecity by Ames assay. The results showed that two samples collected in the areas of airborne heavy particulated-pollution by chemical industrial emissions gave positive response in mutagenicity, another two samples collected in the areas of industrial sewage-pollution by dye making and leather making factories showed an increasing trend in mutagenicity by Ames assay based on dose-response relationship. Other samples gave negative results, among which, some were contaminated by heavy metal cadmium. The benzopyrene level of the tweleve vegetable samples was equivalent to 1. 39 μg/kg on an average, and the maximum level was equal to 3. 75μg/kg.