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Application of mass spectrometry in the regulatory analysis of pesticides and industrial chemicals in food and feed commodities
Author(s) -
Cairns Thomas,
Siegmund Emil G.,
Jacobson Robert A.,
Barry Tom,
Petzinger Glenn,
Morris William,
Heikes David
Publication year - 1983
Publication title -
biomedical mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.475
H-Index - 121
eISSN - 1096-9888
pISSN - 0306-042X
DOI - 10.1002/bms.1200100502
Subject(s) - mass spectrometry , gas chromatography , electron ionization , chemistry , pesticide , chromatography , gas chromatography–mass spectrometry , resolution (logic) , chemical ionization , halogen , environmental chemistry , ionization , organic chemistry , computer science , ion , artificial intelligence , agronomy , biology , alkyl
During regulatory analysis of pesticides and industrial chemicals, compounds are frequently encountered which cannot be readily identified by gas chromatography alone on two or more stationary phases. Such incurred unknown analytical responses are examined by gas chromatography mass spectrometry, particularly if they have been shown to contain P, S, N or halogen via specific gas chromatography detectors. Seven case histories are presented to illustrate the analytical approach adopted to structurally elucidate such compounds at the ppm level. These examples demonstrate the potential complementary combination provided by low resolution electron impact and chemical ionization mass spectrometry in structural determinations.