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[Determination methods of bromine in air of workplace]
Xiao-yun Wang1, Hu Cheng, Li-qun Song
1Shandong Academy of Occupational Health and Occupational Medicine, Jinan 250062, China.
Objective:
To establish a spectrophotometric determination method of bromine in the air of workplace.
Methods:
Bromine in the air of workplace was absorbed by methyl orange solution, then determined by spectrophotometry.
Results:
The range of the determination was 0.2 to 2.8 microg/ml, the linear equation was Y=0.0427X-0.0092, r=0.9996. The detection limit was 0.2 microg/ml. The minimum detectable concentration was 0.27 mg/m(3) for 7.5 L air sample. The relative standard deviations covered the range of 1.1% approximately 3.7%. The recovery rate was in the range of 93.6% to 97.2%. The sampling efficiency ranged from 93.5% to 100.0%.
Conclusion:
The method is available for the determination of bromine in the air of workplace.
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