紫外分光光度法测定车间空气中二硫化二苯并噻唑

Ultraviolet Spectrophotometric Determination of Dibenzothiazole Disulfide in the Air of Wokrshops

用过氯乙烯滤膜采集车间空气中的二硫化二苯并噻唑，将采样后的滤膜与碱的乙醇溶液共沸后，在３１５ｎｍ测量其吸光度。本方法的检测限为２×１０－３ｍｇ／ｍ３，精密度好，变异系数为２．９８％～６．２５％，平均回收率９５．４％～９７．５％，适用于车间空气中二硫化二苯并噻唑的测定。

A new method is reported for the determination of dibenzothiazole disulfide in the air of workshops. Dibenzothiazole disulfide was collected by an ethylene perchloride filter film. The filter film was then boiled with alkaline alcohol solution. Determination of the concentrations was carried out at 315nm. This method shows high accuracy and precision. The detection limit is 2×10 -3 mg/m 3. The variation coefficients are 2 98%～6 25% and the average recoveries are 94 5%～97 5%.