作业场所空气中氢化三联苯的紫外分光光度法测定

Determination of hydrogenated terphenyls by ultravioblet spectrophotometer in the air of work place

目的 测定作业场所空气中氢化三联苯。方法 空气中氢化三联苯用 4 0 %乙醇水溶液吸收采集 ,紫外分光光度法定量测定。结果 方法的检测限为 0 87mg m3,当标准溶液浓度为 0～ 2 0mg L时 ,相对标准偏差为 4 6 %～ 2 3% ,线性范围为 0～ 4 0mg m3。采样效率为 97 3% ,样品在采样管中稳定时间为 7天。结论 通过现场试验 ,该方法简易、快速、准确可靠 ,各项试验指标均符合劳动卫生监测要求 。

Objective To determine Hydrogenated terphenyls in the air of work place.Methods Hydrogenated terphenyls in the air was collected with 40% alcohol solution and determined by ultraviolet spectrophotometer.Results The detectable limit was 0 87mg/m 3. When the concentration of standard solution was 0-20mg/L, the relative standard deviation(RSD) was 4 6%-2 3%. The sampling efficiency was 97 3%. The samples were stable for 7 days. Conclusion It was proved that the method was fast, simple and accurate. It was suitable for the determination of hydrogenated terphenyls in the air of work place.