Direct Analysis of Iminoctadine, Diquat and Paraquat in Tap Water Using a Triple Quadrupole Mass Spectromete

User Benefits

- Makes it possible to analyze concentrations down to 1/100 of the target value of the "Targets for Water Quality Management in Japan" without solid-phase extraction, thus saving time and labor in pretreatment. - Contributes to a reduction in variation of quantitation result due to factors such as operator technical skill thanks to the elimination of the pretreatment process.

Introduction

Iminoctadine is a pesticide widely used as a fungicide, and diquat and paraquat are pesticides widely used as herbicides. Target values (0.006 mg/L for iminoctadine, 0.01 mg/L for diquat, 0.005 mg/L for paraquat) for water supplies in Japan are specified in “Complementary Items to Set the Targets for Water Quality Management”. In Method 21 in the Appendix to “Complementary Items to Set the Targets for Water Quality Management,” a sample concentrated 50 times is analyzed by LC-MS/MS using solid-phase extraction. This article introduces the analysis results obtained by directly injecting tap water without solid phase extraction.

December 25, 2022 GMT