二溴对甲基偶氮氯磺测定废水中铅

Lead Determination in Waster by Dibronochloropropane-P-Methyl

在 0 .2 4mol/L磷酸介质中 ,铅与二溴对甲基偶氮氯磺形成 1:2蓝色配合物 ,最大吸收波长在 6 30nm ,表观摩尔吸光系数为 :8.0 1× 10 4 。铅量在 0 .0 4～ 0 .80 μg/ml内符合比耳定律 ,用于废水中的铅的测定 ,可获得满意结果。

In the medium of 0.24mol·L -1 Phosphoric Acid,Lead and Dibronochloropropane-P-Methyl from a blue mixture in a ratio of 1∶2,with the maximum absorption wavelength of 630nm and the apparent absorption spectro mol coeffecient of 8.01×10 4.The content of Lead accords with the law of Bill within 0.04～0.80 μg/ml ,a satisfactory result can be available if used in the Lead determination.