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- W2388895566 abstract "Objective To establish a method to determine p-phenylenediamine in the air of workplace by capillary gas chromatography.Methods The p-phenylenediamine in the air of workplace was sampled with silica gel tubes and eluted with ethanol,separated by SE-54 capillary column and determined by gas chromatography under the optimal instrument conditions.The experimental study was carried out according to the requirements of Methods for Determination of Chemical Substances in the Air of Workplace.Results p-Phenylenediamine showed good linearity at the range of 0-1 120 μg/ml(r=0.999 6).The limit of detection was 0.39 μg/ml(s/n=3;injection volume,1 μl) and the detectable concentrition of sample was 0.13 mg/ m3(3L of air sample).Samples of high,middle and low concentrations were re-determined for 6 times and the RSD was 0.0%-0.45% with the desorption efficiency at the range of 95.2% to 96.4%.Benzene,methylbenzene,xylene,acetone,diphenylamine,phenylamine,o-phenylenediamine,m-phenylenediamine,diphenyl and triethylamine,which may coexist with p-phenylenediamine in the air of workplace,had no interference on the determination.Conclusion The method has the advantages of simple operation,rapid performance,high sensitivity and low detection limit,and coexisting substances have no interfering influence on the determination,so it is suitable to determine the p-phenylenediamine in the air of workplace." @default.
- W2388895566 created "2016-06-24" @default.
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- W2388895566 date "2011-01-01" @default.
- W2388895566 modified "2023-09-26" @default.
- W2388895566 title "Determination of P-phenylenediamine in the Air of Workplace by Capillary Gas Chromatography" @default.
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