Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1245533 | Talanta | 2008 | 6 Pages |
Abstract
In this work, chloride, chlorate and perchlorate are fast separated on PDMS microchip and detected via in-channel indirect amperometric detection mode. With PDMS/PDMS microchip treated by oxygen plasma, anions chloride (Cl−), chlorate (ClO3−), and perchlorate (ClO4−) are separated within 35 s. Some parameters including buffer salt concentration, buffer pH, separation voltage and detection potential are investigated in detail. The separation conditions using 15 mM (pH 6.12) of 2-(N-morpholino)ethanesulfonic acid (MES) + l-histidine (l-His) as running buffer, −2000 V as separation voltage and 0.7 V as detection potential are optimized. Under this condition, the detection limits of Cl−, ClO3−, and ClO4− are 1.9, 3.6, and 2.8 μM, respectively.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
Xin-Ai Li, Dong-Mei Zhou, Jing-Juan Xu, Hong-Yuan Chen,