Saputro, Sulistyo and YOSHIMURA, Kazuhisa and MATSUOKA, Shiro and TAKEHARA, Kô and Narsito, (2009) Improved Solid-phase Spectrophotometry for the Microdetermination of Chromium(VI) in Natural Water. ANALYTICAL SCIENCES, 25. pp. 1445-1450.
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Abstract
A simple and sensitive solid-phase spectrometry procedure was improved for the microdetermination of Cr(VI). A 0.06 cm3 portion of a cation excharger, Muromac AG 50W-X2, was used to concetrate the target Cr(VI) in a 20 cm3 water sample, and resin beads were introduced in a flow cell of 1.5 mm diameter and having a 10 mm light path length for measurements using a UV-visible spectrophotometer. There lenses were used for focusing the incident light beam and for recovering light scattered by the solid phase in the cell. The sensitivity achieved was higher by a factor of 277 compared with that of solution method, and the detection limit was 0.014 ug dm-3. The recovery on spiked real water samples by the standard addition method was 96 - 101%. Favorable working and performance characteristics made it possible to directly determine sub-ug dm-3 amounts of Cr(VI) in natural water samples.
Item Type: | Article |
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Subjects: | Q Science > QA Mathematics |
Divisions: | Fakultas Matematika dan Ilmu Pengetahuan Alam > Matematika |
Depositing User: | mr azis r |
Date Deposited: | 23 May 2013 20:26 |
Last Modified: | 23 May 2013 20:26 |
URI: | https://eprints.uns.ac.id/id/eprint/838 |
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