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Determination of 17 pyrethroid residues in troublesome matrices by gas chromatography/mass spectrometry with negative chemical ionization

✍ Scribed by Chong-yu Shen; Xiao-wen Cao; Wei-jian Shen; Yuan Jiang; Zeng-yun Zhao; Bin Wu; Ke-yao Yu; Han Liu; Hong-zhen Lian

Book ID
116904914
Publisher
Elsevier Science
Year
2011
Tongue
English
Weight
497 KB
Volume
84
Category
Article
ISSN
0039-9140

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Determination of anabolic steroids by gas chromatography/negative-ion chemical ionization mass spectrometry and gas chromatography/negative-ion chemical ionization tandem mass spectrometry with heptafluorobutyric anhydride derivatization
✍ Man Ho Choi; Bong Chul Chung; Won Lee; Un Chul Lee; Yunje Kim πŸ“‚ Article πŸ“… 1999 πŸ› John Wiley and Sons 🌐 English βš– 118 KB πŸ‘ 2 views

A gas chromatography/mass spectrometry (GC/MS) method is described which uses negative ion chemical ionization (NCI) and tandem mass spectrometry (MS/MS) for the determination of eight anabolic steroids in human urine. Eight anabolic steroids were derivatized by heptafluorobutyric anhydride (HFBA),