Authors:
Puiu Diana Maria, Scutariu Roxana, Vasile Iancu, Tatarus Alina, Pascu Luoana Florentina, Galaon Toma
Puiu Diana Maria, Scutariu Roxana, Vasile Iancu, Tatarus Alina, Pascu Luoana Florentina, Galaon Toma
Conference: International Symposium “The Environment and the Industry”
Date: 26-27 September 2019
Location: Bucharest, Romania
Published: 2019
Keywords:
Acidic herbicides
Chlorophenoxycarboxylic acid
Derivatization
GCMS/MS
Solid-phase extraction
Abstract:
A sensitive GC-MS/MS method was developed for the determination of five important chlorophenoxycarboxylic herbicides from surface water: 2,4 D (2,4dichlorophenoxyacetic acid), MCPA (4-chloro-2-methylphenoxyacetic acid), 2,4 DB (2,4-dichlorophenoxybutyric acid), MCPB (4-chloro-2-methylphenoxybutyric acid), 4 CPA (4-clorophenoxyacetic acid). The analytical challenge in the determination of the acidic herbicides by GC consists in an additional derivatization step due to the –COOH polar group. GC-MS/MS is used to increase the sensitivity for the quantification of TBDMS (t-buthyldimethylsilyl) derivatives which are often used in MS separations because of the easily fragmentation of molecular ion.