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Effect of ammonium formate as ionizing additive in thermospray liquid chromatography‐mass spectrometry for the determination of triazine, phenylurea and chlorinated phenoxyacetic acid herbicides
Author(s) -
Barceló D.
Publication year - 1989
Publication title -
organic mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.475
H-Index - 121
eISSN - 1096-9888
pISSN - 0030-493X
DOI - 10.1002/oms.1210240404
Subject(s) - chemistry , thermospray , ammonium formate , simazine , formate , ammonium acetate , mass spectrometry , ammonium , triazine , chromatography , nuclear chemistry , high performance liquid chromatography , atrazine , organic chemistry , selected reaction monitoring , tandem mass spectrometry , pesticide , agronomy , catalysis , biology
A comparison between the use of ammonium acetate and ammonium formate in thermospray liquid chromatography‐mass spectrometry with positive and negative ion modes using ‘filament‐on’ mode has been applied for the determination of simazine, atrazine, propazine, monuron, diuron, linuron, 2,4,‐D, 2,4,5‐T and silvex. By using ammonium formate, the positive ion mode showed for triazine and phenylurea herbicides [M + H] + and [M + NH 4 ] + , respectively, and the formation of other adduct ions different from ammonium acetate. In the negative ion mode, chlorinated phenoxyacetic acid herbicides exhibited [M + acetate] − or [M + formate] − , depending on the ionizing additive. Applications are reported for the determination of triazine and chlorinated phenoxyacetic acid herbicides in spiked soil and water samples, respectively.