Measuring Hexavalent Chromium Compounds in Atmospheric Dust

Introduction

In March 2018, Japan's Ministry of the Environment issued the "Manual of measurement methods for hazardous air pollutants - Measurement method for hexavalent chromium compounds in atmospheric dust" (in Japanese). In this manual, hexavalent chromium compounds are measured using the alkali- impregnated filter collection - ion chromatography post-column derivatization spectroscopic absorption method. Diphenyl carbonohydrazide, which specifically reacts with hexavalent chromium, is used as the post column derivatization reagent. The concentration of hexavalent chromium that can be measured by this method is 0.069 to 3.47 ng/m³, in terms of concentrations in atmospheric dust. This article introduces an example measurement using the Prominence HPLC.

November 15, 2018 GMT