Zhonghua lao dong wei sheng zhi ye bing za zhi = Zhonghua laodong weisheng zhiyebing zazhi = Chinese journal of industrial hygiene and occupational diseases · 2016
[Determination of bromoform in the air of workplace by solvent desorption gas chromatography].
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Li X J, Zhu B L, Wu J, Zhou C M, Gong W
Аннотация
OBJECTIVE: To establish the method of solvent desorption gas chromatography for determination of bromoform in workplace air.
METHODS: Bromoform in the air was adsorbed by activated carbon tube sampling and solvent desorption using carbon disulfide, then analyed by GC with DB-FFAP capillary column.
RESULTS: The linear regression equation is y=1.22x-0.81 (r=0.999 9)between 0.57~300.00 μg/ml of target concentration in the air. The detection limit was 0.17 μg /ml. The relative standard deviations of the batch and inter batch were 1.7%~3.6%, 2.8%~6.3%, respectively. The sampling efficiency was 100%. The overall desorption efficiency was 95.0%. The breakthrough capacity was more than 0.61 mg(100 mg activated carbon).
CONCLUSION: The method is suitable to determine bromoform in the air of workplace.
METHODS: Bromoform in the air was adsorbed by activated carbon tube sampling and solvent desorption using carbon disulfide, then analyed by GC with DB-FFAP capillary column.
RESULTS: The linear regression equation is y=1.22x-0.81 (r=0.999 9)between 0.57~300.00 μg/ml of target concentration in the air. The detection limit was 0.17 μg /ml. The relative standard deviations of the batch and inter batch were 1.7%~3.6%, 2.8%~6.3%, respectively. The sampling efficiency was 100%. The overall desorption efficiency was 95.0%. The breakthrough capacity was more than 0.61 mg(100 mg activated carbon).
CONCLUSION: The method is suitable to determine bromoform in the air of workplace.