论文部分内容阅读
1987年4月,我们采集了绵阳市商店中销售的44种共130支牙膏测定四种有害金属含量。铅、镉采用示波极谱法,汞用冷原子吸收法,砷用二乙氨基硫代甲酸银比色法测定. 检查结果如下(平均值,含量范围,单位为mg/kg):铅1.27,0.01～20.8;镉0.62,0.05～19.5;汞0.02,0.01～0.14;砷0.46,0.50～4.18。检测的44种牙膏中,有害金属含量符合下述建议值的有38种,达到86.3％,含量较高者达13.7％.
April 1987, we collected a total of 44 kinds of toothpaste 44 kinds of sales in Mianyang store for the determination of four kinds of harmful metal content. Lead and cadmium were determined by oscillopolarography and mercury by cold atomic absorption spectrometry and arsenic was analyzed by silver diethylaminothiocarboxylate colorimetric method.The results were as follows (average value, content range in mg / kg): lead 1.27 , 0.01 ~ 20.8; cadmium 0.62,0.05 ~ 19.5; mercury 0.02,0.01 ~ 0.14; arsenic 0.46,0.50 ~ 4.18. Among 44 kinds of toothpaste tested, 38 kinds of harmful metals meet the following recommended values, reaching 86.3%, while those with higher contents reached 13.7%.