The Mass Spectrometry society of Japan - The 71st Annual Conference on Mass Spectrometry, Japan
Japanese

Abstract

Table of contents

Timetable

Plenary Lecture

Symposium Sessions (Day1, Day2, Day3)

Basic Sessions (Day1, Day2, Day3)

Young Researchers' Sessions (Day1, Day2, Day3)

Poster Presentations (Day1, Day2, Day3)

Special Evening Sessions

Corporate Program

Basic Sessions

Day 1, May 15（Mon.）　11:12-11:30　Room B (Room 1202)

1B-O-1112（1P-11）　　PDF

Simultaneous and Sensitive Analysis of Glyphosate, Glufosinate, and Their Metabolites in Surface Water by HPLC-ICP-MS/MS

(1Kwansei Gakuin Univ., 2Kyushu Univ.)
oTakahiro Morimoto1, Akane Ito2, Masaharu Tanimizu1

Organophosphorus pesticides such as glyphosate and glufosinate are used worldwide, and environmental regulatory values are being adopted in many countries due to their potential toxicity. In the present work, a pretreatment-free analytical method is established in which these two compounds with their metabolites were isolated each other by anion-exchange HPLC using pH- and concentration-optimized ammonium acetate as eluent and detected by triple quadrupole ICP-MS. The very low detection limits of 0.06-0.12 ppb are acquired through the detection of P+ as PO+ via oxygen reaction mode, and quantitative recovery was obtained from the spike-recovery test on river water samples containing phosphoric acid as an isobaric interferent. In addition, a constant sensitivity per molar concentration was achieved regardless of the compounds due to the powerful ion source of ICP-MS. This property suggests that semi-quantitative analysis of unknown P-bearing compounds is possible from one calibration curve.