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| Determination of 10 Kinds of Benzene Solvents Residues in Modified Products by Headspace-Gas Chromatography |
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| DOI： |
| KeyWord:headspace-gas chromatography modified products benzene solvents |
| Author | Institution |
| HAN Chen，SUN Duo-zhi,ZUO Ying,LU Chun-qiang,LIU Jun* |
上海市质量监督检验技术研究院 |
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| Abstract: |
| A headspace-gas chromatographic method was established for the determination of 10 kinds of benzene solvent residues in modified products.By optimizing the sample pretreatment and chromatographic conditions,the linear correlation coefficients of 10 analytes were more than 0.999,and the quantitation limits(S/N=10) were in the range of 0.924-1.044 mg/kg.The recoveries were in the range of 83.5%-118.5%,with relative standard deviations of 1.8%-8.2%.The method had the advantages of saving solvent,rapidness,good repeatability and easy operation.The experiment indicated that,under the condition of a certain temperature,correction fluid samples were volatilized a great deal of toluene，xylene，ethylbenzene and styrene,and a certain amount of 1,2,4-trimethylbenzene.Forthermore,the higher the temperature varied,the larger the volatile amount of benzene solvents was obtained. |
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