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[A novel method based on Y-shaped cotton-polyester thread microfluidic channel].

Authors
  • Wang, Lu
  • Shi, Yan-ru
  • Yan, Hong-tao
Type
Published Article
Journal
Guang pu xue yu guang pu fen xi = Guang pu
Publication Date
Aug 01, 2014
Volume
34
Issue
8
Pages
2234–2237
Identifiers
PMID: 25474968
Source
Medline
License
Unknown

Abstract

A novel method based on Y-shaped microfluidic channel was firstly proposed in this study. The microfluidic channel was made of two cotton-polyester threads based on the capillary effect of cotton-polyester threads for the determination solutions. A special device was developed to fix the Y-shaped microfluidic channel by ourselves, through which the length and the tilt angle of the channel can be adjusted as requested. The spectrophotometry was compared with Scan-Adobe Photoshop software processing method. The former had a lower detection limit while the latter showed advantages in both convenience and fast operations and lower amount of samples. The proposed method was applied to the determination of nitrite. The linear ranges and detection limits are 1.0-70 micromol x L(-1), 0.66 micromol x L(-1) (spectrophotometry) and 50-450 micromol x L(-1), 45.10 micromol x L(-1) (Scan-Adobe Photoshop software processing method) respectively. This method has been successfully used to the determination of nitrite in soil samples and moat water with recoveries between 96.7% and 104%. It was proved that the proposed method was a low-cost, rapid and convenient analytical method with extensive application prospect.

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