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

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/m3. 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.