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Determination of N-Nitrosamines in Rubber Sealing Material by SPME/GC-MS |
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DOI: |
KeyWord:rubber sealing material solid-phase microextraction gas chromatography-mass spectrometry N-nitrosamine |
Author | Institution |
CAI Jin-an,LIU Zhi-jian,YUAN Jia-wei,PAN Yong-hong,YE Yuan-jian* |
广州质量监督检测研究院 |
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Abstract: |
A solid phase microextraction(SPME) coupled with gas chromatography-mass spectrometry was developed for the determination of N-nitroso-N-methylaniline(NMPhA),N-nitroso-N-ethylamine(NEPhA) and N-nitrosodiphenylamine(NDPheA) in rubber sealing material.The samples were pretreated by GB/T 24153-2009 standard method,and then extracted by SPME.Influences of fibers species,extraction time,mixing speed and temperature on extraction efficiencies of three N-nitrosamines were optimized.Under the optimized experimental conditions,the linear ranges of NMPhA,NEPhA and NDPheA were between 5 μg/L and 500 μg/L with correlation coefficients(r) larger than 0.99. The method detection limits were 0.5 μg/kg.The average recoveries were in the range of 77%-92% with relative standard deviations(RSD,n=6) of 3.8%-7.7%. |
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