Fast Detection of Nitrite with a Test Paper Tape

Bao Shan He; Fang Wei; Na Gao; Qi Yu Lu

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

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 538-541Fast Detection of Nitrite with a Test Paper Tape

Fast Detection of Nitrite with a Test Paper Tape

Abstract:

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 μg/mL. The correlation coefficient(r) was 0.984 and the whole testing time needed was about 1.5 min at room temperature.

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Periodical:

Advanced Materials Research (Volumes 538-541)

Pages:

2181-2183

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.538-541.2181

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Online since:

June 2012

Authors:

Bao Shan He, Fang Wei, Na Gao, Qi Yu Lu

Keywords:

Fast Detection, N-(1-Naphthyl)-Ethylenediamine Dihydrochloride, Nitrite, Test Paper Tape

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