摘要:

AbstractA method has been developed for the determination of 2,4,6‐trichloroanisole, 2,3,4,6‐tetrachloroanisole and pentachloroanisole in foods and packaging materials. Using combined high‐resolution gas chromatography‐multiple ion monitoring‐mass spectrometry, and with the addition of 3,5‐dimethyl‐2,4,6‐trichloroanisole as an internal standard, a series of calibration curves were prepared covering the concentration range 0.1 to 100 μg kg−1. The detection limit, with quantitation by extrapolation only, was 0.01 μg kg−1. The mean extraction efficiency of the combined distillation‐extraction step was greater than 90% for each of the chloroanisoles analysed. The mean extraction efficiency for the internal standard was 105%. The reproducibility of the results obtained in the gas chromatography‐mass spectrometry step was assessed and the coefficients of variation lay i

ISSN:0022-5142    

DOI:10.1002/jsfa.2740370112

出版商:John Wiley&Sons, Ltd    

年代:1986

数据来源: WILEY

ISSN:0022-5142    

DOI:10.1002/jsfa.2740370101

出版商:John Wiley&Sons, Ltd    

年代:1986

数据来源: WILEY