SPECTROPHOTOMETRIC DETERMINATION OF CHROMIUM(VI) BY EXTRACTION OF PROTRIPTYLINIUM DICHROMATE

Authors
BURNS DT DUNFORD MD
Citation
Dt. Burns et Md. Dunford, SPECTROPHOTOMETRIC DETERMINATION OF CHROMIUM(VI) BY EXTRACTION OF PROTRIPTYLINIUM DICHROMATE, Analytica chimica acta, 319(1-2), 1996, pp. 205-207
Citations number
11
Categorie Soggetti
Chemistry Analytical
Journal title
Analytica chimica acta → ACNP
ISSN journal
00032670
Volume
319
Issue
1-2
Year of publication
1996
Pages
205 - 207
Database
ISI
SICI code
0003-2670(1996)319:1-2<205:SDOCBE>2.0.ZU;2-C
Abstract
Chromium(VI) (< 500 mu g dichromate) can be determined spectrophotomet rically at 365 nm after its extraction as protriptylinium dichromate i nto acetone-chloroform (1:1, v/v). The effects of acidity, diverse ion s and masking studies are reported. The relative standard deviation fo r determination of 200 mu g of dichromate is 0.9% (n = 7). The system has been applied to the spectrophotometric determination of chromium i n steels (0.03-4%).