Analysis of Clopyralid in Manure Compost and Sludge Fertilizer Using a Triple Quadrupole Mass Spectrometer

User Benefits

- High-sensitivity analysis of clopyralid in manure compost and sludge fertilizer is possible using an improved method from Testing Methods for Fertilizers (FAMIC) - Filter blockages during the pretreatment step can be avoided by using an improved purification procedure.

Introduction

Clopyralid is a herbicide in common use in North America and Australia, which is found in residual quantities in imported animal feed and thereby in the manure of livestock raised on this feed. Even at low concentrations, clopyralid in manure-based fertilizer can have an adverse effect on the growth of vegetables and flowers such as tomatoes, soybeans and sunflowers, incurring demand for a high sensitivity detection method. In this Application News, we demonstrate the analysis of clopyralid in manure compost and sludge fertilizer samples using the LCMS-8050 triple quadrupole mass spectrometer. The method employed is an improved version of a method originally listed in Testing Methods for Fertilizers (2020) published by the Food and Agricultural Materials Inspection Center (FAMIC). Note: Shimadzu Corporation contributed to the report Analysis of clopyralid in manure compost using liquid chromatography-mass spectrometry: Validation through multilaboratory collaborative testing, also published by FAMIC.

January 26, 2023 GMT