In order to make a systematic analysis on the speciations of chromium in atmospheric particulate matter, a simple analysis system was established for chromium speciations of atmospheric particulates. Firstly, the total concentration was determined, then five chromium speciations were determined by Tessier method,including exchangeable state, bound to carbonates, bound to organic matters and residual, bound to Fe-Mn. With p H=9.5 Na_2CO_3-Na HCO_3 buffer solution processing of atmospheric particulate matter ...