Speciation of chromium from industrial wastes and incinerated sludges

摘要: Abstract In this study, the Cr(III) and Cr(VI) contents of seven international standards, wastes, incinerated wastes ash samples were measured with a simply hyphenated system. The content was using an on-line method, which contained acid-activated aluminium oxide filled microcolumn that developed especially for study inductively coupled plasma atomic emission spectrometer. sample introduction steps in measurement controlled by autosampling program. For lower chromate concentrations, similar, but off-line separation method applied aluminium-oxide solid-phase extraction column graphite furnace absorption Acid-activated adsorbs pH 2–7 range, does not adsorb Cr(III). adsorbed can be eluted strong acid. changes chromium forms studied waste burning process as well. our incineration studies, we obtained following results: A portion chromium(III) oxidised to chromium(VI) process. It increases potential risk air soil contamination chromium(VI).