Separation of microgram quantities of Cr(III) and Cr(VI) in aqueous solutions and determination by energy dispersive X-ray fluorescence spectrometry

✍ Scribed by Sirpa Peräniemi; Markku Ahlgrén

• Publisher: Elsevier Science
• Year: 1995
• Tongue: English
• Weight: 563 KB
• Volume: 315
• Category: Article
• ISSN: 0003-2670
• DOI: 10.1016/0003-2670(95)00284-7

✦ Synopsis

A procedure was developed for the separation and independent determination of microgram quantities of Cr(VI) and Cr(II1) in aqueous solution. Cr(VI) was adsorbed onto zirconium-loaded activated charcoal (ZrC * 1, and Cr(III) was collected by Fe(OH), precipitation and the precipitate bound to activated charcoal. Chromium in the activated charcoal was measured by energy dispersive X-ray fluorescence spectrometry. The detection limits for both chromium species.were better than 0.05 mg/l. The procedure was tested with the Ground Water and Waste Water Pollution Control Check Standard WP-15 spiked with Cr(VI) and several samples from the plating industry.