ABSTRACT: Speciation of
Cr(III) and Cr(VI) in wastewater have been widely investigated. The species of
Cr(III) and Cr(VI) in wastewater samples were determined by UV – Vis
Spectrometry and Atomic Absorption Spectrometry (AAS). The method described is
based upon the spectrophotometric determination of the magenta chromagen (λmax
= 545 nm) formed when 1,5-diphenylcarbazide reacts with hexavalent chromium in
sulphuric acid solution. Hexavalent chromium are determined by a calibration
curve technique. The result showed that Cr(VI) concentration are still on the
government regulation (Menteri Negara Kependudukan dan Lingkungan Hidup No.
03/MENKLH/II/1991).
Keywords: speciation, cromium,
electroplating industry
Penulis: Dian Windy Dwiasi,
Dwi Kartika
Kode Jurnal: jpkimiadd080013
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