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- W2361874906 abstract "Objective To establish a method for measuring p-toluenesulfonic acid in workplace air by high performance liquid chromatography(HPLC).Methods p-toluenesulfonic acid in vapor and aerosol in workplace air was sampled using impregnated ultra-fine glass fiber filter paper,extracted with isopropanol in water and measured by ion pair high performance liquid chromatography.Results The accuracy of detection was 1.0μg/mL and the limit of quantification was 3.3 μg/L with the measuring range from 0 μg/mL to 1 000 μg/mL.The correlation coefficient(R2) was greater than 0.999 and the slope of the regression equation(Mean±SD) was 0.482 1±0.011 2.Filter paper containing 100 μg,500 μg or 2 500 μg of p-toluenesulfonic acid was analyzed 6 times for 5 consecutive days,.Its intra-day precision(RSD) was in the range of 1.9% to 2.7% and the inter-day precision(RSD) was within the range of 2.3% to 2.6%.The recovery of spiked samples was within the range of 91.6% to 102.8%.The mean p-toluenesulfonic acid aerosol sampling efficiency of ultra-fine glass fiber filter paper was 95.7%,and the mean p-toluenesulfonic acid vapor sampling efficiency of impregnated ultra-fine glass fiber filter paper was 95.2%.Samples were extracted with 2%(V/V) isopropanol in water and the extraction efficiency was greater than 97.4%.After sampling p-toluenesulfonic acid,the(impregnated) ultra-fine glass fiber filter paper could be stored at room temperature for at least 7 days.Conclusion This method has high accuracy,sampling and extraction efficiency,low detection limit,good precision and stability.It can be used for determination of p-toluenesulfonic acid in workplace air." @default.
- W2361874906 created "2016-06-24" @default.
- W2361874906 creator A5018731318 @default.
- W2361874906 date "2012-01-01" @default.
- W2361874906 modified "2023-09-24" @default.
- W2361874906 title "Measurement of P-Toluenesulfonic Acid in Workplace Air by HPLC" @default.
- W2361874906 hasPublicationYear "2012" @default.
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