Effect of ammonium formate as ionizing additive in thermospray liquid chromatography-mass spectrometry for the determination of triazine, phenylurea and chlorinated phenoxyacetic acid herbicides

✍ Scribed by D. Barceló

• Publisher: John Wiley and Sons
• Year: 1989
• Tongue: English
• Weight: 543 KB
• Volume: 24
• Category: Article
• ISSN: 1076-5174
• DOI: 10.1002/oms.1210240404

✦ Synopsis

A comparison between the use of ammonium acetate and ammonium formate in thennospray 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, 2,4,5T and silvex. By using ammonium formate, the positive ion mode showed for triazine and phenylurea herbicides [M + HI+ and [M + NH,]+, respectively, and the formation of other adduct ions different from ammonium acetate. In the negative ion mode, chlorinated phenoxyacetic acid herbicides exhibited [M + acetatelor [M + formatel-, 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.