空气中三氯苯胺的采集与分析方法的研究

Study on Method of Sampling and Analysis of Trichloroaniline in the Air

空气中三氯苯胺用５０％乙醇吸收，经ＯＶ－１７和ＯＶ－２１０混合色谱柱分离，电子捕获检测器检测测定。对采样及测定条件，用正交试验进行了优选。方法的检出限为０．０１ｍｇ／Ｌ，当标准溶液浓度为０．５～１０ｍｇ／Ｌ时，相对标准偏差为４．３％～３．７％。线性范围为０．０２～４０ｍｇ／Ｌ。采样效率为９９．１％～１００％。样品在采样管中可稳定１５天以上。通过现场试验和验证试验，证明该方法准确可靠、快速简便，完全适用于空气中三氯苯胺的测定。各项试验指标符合劳动卫生监测要求。

Trichloroaniline in the air was collected with 50% ethanol and separated with a column OV 17:OV 210 ECD as a detector. The best conditions of sampling and determining were selected through the orthogonal experimental design. The detectable limit was 0.01mg/L. When the concentration of trichloroaniline in the air was 0.5～10mg/L, the relative standard deviation (RSD) was 43%～37%. There was a linear relation within the range of 002～40mg/L. The sampling efficiency was 991%～100%.The samples were stable for at least 15 days.It is proved that this method is accurate, fast,simple and sensitive. It is suitable for the determination of trichloroaniline in the air.