An automated flow-batch analyzer based on spectrophotometry for the determination of nitrite

被引：1

作者：

Dong, Chen-yang ^{[1
]}

Li, Wen-zhan ^{[1
]}

Wang, Zhi-hong ^{[1
]}

Zeng, Jun-xiang ^{[1
]}

Liang, Jin-tao ^{[1
]}

机构：

[1] Guilin Univ Elect Technol, Sch Life & Environm Sci, Guilin 541004, Peoples R China

来源：

OPTOELECTRONICS LETTERS | 2019年 / 15卷 / 05期

关键词：

14;

D O I：

10.1007/s11801-019-9007-3

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

An automated flow-batch analyzer (FBA) based on spectrophotometry was developed for the determination of nitrite (NO2-) in environmental waters. The FBA consists of a homemade flow cell, light source, detector and a mini-syringe pump, which was controlled by self-designed software written in LabVIEW. Two LEDs and a light-to-voltage converter were used as the light source and detector respectively. The chemical detection method was based on spectrophotometry and modified Griess reaction. With the optimized conditions, the limit of detection (LOD) was 0.018 mu mol center dot L-1 and the relative standard deviations (RSDs) at different concentrations (0-12 mu mol center dot L-1) were 0.54%-3.63% (n=3). Measurements of different aqueous samples (n=21) showed no significant difference between results obtained by developed FBA and a commercial spectrophotometer.

引用

页码：339 / 342

页数：4

共 14 条

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