Reflection photometric detection on a paper-backed immobilized reagent surface in a PDMS microfluidic chip flow injection system integrated with gas diffusion separation

被引：0

作者：

Jia, Hong-Xin ^{[1
]}

Xu, Zhang-Run ^{[1
]}

Wang, Shi-Li ^{[1
]}

Fang, Zhao-Lun ^{[1
]}

机构：

[1] NE Univ, Res Ctr Analyt Sci, Shenyang 110004, Peoples R China

来源：

PROCEEDINGS OF THE FIRST SHENYANG INTERNATIONAL COLLOQUIUM ON MICROFLUIDICS | 2007年

关键词：

microchip; reflection photometric detection; gas diffusion separation; FIA;

D O I：

暂无

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Reflection photometric detection on a pH paper micro-patch in a PDMS microfluidic chip was developed. The microfluidic chip integrated flow injection analysis (FIA) and gas diffusion separation system. The whole system fully integrated all analytical functional components including injection, separation and detection. The system was applied to the detection of ammonium ion. A reproducibility of 4.2% RSD (n=9) was achieved for a 20 MM NH4+ standard. The limit of detection for NH4+ was 0.6 mM (3 sigma) at a sample throughput of 22 h(-1) consuming 400 nL sample volume for each determination.

引用

页码：188 / 189

页数：2