Fast Detection of Nitrite with A Test Paper Tape

被引：0

作者：

He, Baoshan ^{[1
]}

Wei, Fang ^{[1
]}

Gao, Na ^{[1
]}

Lu, Qiyu ^{[1
]}

机构：

[1] Henan Univ Technol, Sch Food Sci & Technol, Zhengzhou 450001, Henan, Peoples R China

来源：

MATERIALS PROCESSING TECHNOLOGY II, PTS 1-4 | 2012年 / 538-541卷

关键词：

Fast detection; Nitrite; Test paper tape; N-(1-Naphthyl)-ethylenediamine dihydrochloride; SPECTROPHOTOMETRIC DETECTION; FLUORESCENCE DETECTION; LIQUID-CHROMATOGRAPHY; NITRATE; CHEMILUMINESCENCE; SAMPLES; FOOD;

D O I：

10.4028/www.scientific.net/AMR.538-541.2181

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A test paper tape on the determination of nitrite in food was designed, which is based on the diazotization of nitrite with sulfanilic acid under weakly acidic conditions then coupled with N-(1-Naphthyl)-ethylenediamine dihydrochloride in forming the colour-producing response. Then the reaction membrane turned to purple-red. The deeper purple-red film was obtained in an increased nitrite concentration-dependent manner. Experimental results showed that nitrite concentrations were proportional to a values of the L a b color system. A favorable linearity was presented in the range of 25 to 5000 mu g/mL. The correlation coefficient(r) was 0.984 and the whole testing time needed was about 1.5 min at room temperature.

引用

页码：2181 / 2183

页数：3