Jaafar, Jafariah and Konishi, Kanami and Terabe, Shigeru and Ikegami, Tohru and Tanaka, Nobuo (2009) Field enhanced sample injection for the CE determination of arsenic compounds using successive multiple ionic polymer layer coated capillaries. Chromatographia, 69 (11-12). pp. 1437-1441. ISSN 0009-5893
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Official URL: http://dx.doi.org/10.1365/s10337-009-1063-6
A capillary electrophoresis method using indirect UV detection has been applied to the determination of arsenate [As(V)], arsenite [As(III)], monomethylarsonic acid and dimethylarsinic acid. The arsenic species were successfully separated in a successive multiple ionic polymer layer coated capillary. On-line sample preconcentration of arsenic compounds were performed by employing field enhanced sample injection. A baseline separation was achieved in a basic background solution of 10 mM 2,6-pyridinedicarboxylic acid at pH 10.3. The precision of migration time was 1.2-2.4% RSD and peak height was 8.1-12.9% RSD. The limits of detection at a S/N ratio of 3 for the four arsenic compounds were found to be 20-70 ppb, which are comparable to other on-line preconcentration techniques. The enhancement factor was improved by 230-1,500-fold.
|Uncontrolled Keywords:||arsenic compounds, capillary electrophoresis, field enhanced stacking injection, indirect uv detection, successive multiple ionic polymer layers|
|Subjects:||Q Science > QH Natural history > QH301 Biology|
Q Science > QH Natural history > QH426 Genetics
|Deposited By:||Ms Zalinda Shuratman|
|Deposited On:||26 Aug 2011 05:05|
|Last Modified:||26 Aug 2011 05:05|
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