Effective Factors on Determination of Hexavalent Chromium in Air

Abstract

Introduction: In electroplating processes, hexavalent chromium mist is emitted in air. Hexavalent chromium mist can cause lung cancer and nasal septum in workers. As Permissible Exposure Limit (PEL) of hexavalent chromium is low (0.5 µg/m3) and it is used in various industries, evaluation of workers exposure to hexavalent chromium is very important. However, hexavalent chromium is relatively unstable and it can be reduced to trivalent chromium during sampling, storage, and extraction. So, factors influencing determination of Cr (VI) must be evaluated. In this study, influence of some factors such as sampling time, storage time, type of filter, and storage temperature on reduction of Cr (VI) were investigated.