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- W2391335669 abstract "Objective To establish a gas chromatographic method with carbon disulfide desorption for benzene,toluene and xylenes in time-weighted average(TWA)concentration in the workplace air. Methods Solvents such as benzene,toluene and xylenes were sampled with charcoal tube.Solvent desorption with carbon disulfide and analysis by GC(FID)were performed.Results Linear limits of the methods:benzene 2.0 to 50?μg/ml,toluene 3.1 to 100?μg/ml and xylenes 8.5 to 600?μg/ml.The coefficient of correlation ranged from 0.999?5 to 0.999?9 .Limit of detection of the solvents above were 2.0,3.1 and 8.5?μg/ml.The braakthrough capacities of 100?mg charcoal for the solvents above were 33.3,29.1 and 27.2?mg respectively.Samples could be storaged stablity at least 7 days under normal conditions.Conclusion These methods were corresponding to the Chinese guidelines of the method for determination of toxic substances in workplace air and confirmed suitable to determine the selected solvents in TWA concentration in workplace air." @default.
- W2391335669 created "2016-06-24" @default.
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- W2391335669 date "2005-01-01" @default.
- W2391335669 modified "2023-09-23" @default.
- W2391335669 title "Study on determination of time-weighted average concentration for benzene,toluene and xylenes in air" @default.
- W2391335669 hasPublicationYear "2005" @default.
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