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STUDY ON THE DETERMINATION OF NITRITE BY A NEW UV SPECTROPHOTOMETRIC METHOD (III)

Weixing Ma

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Abstract

A new fairly selective and simple UV spectrophotometric method for the determination of nitrite is developed. Nitrite reacts with safranin O in acdic medium (HCl) to forma product, which is measured at 350um. Beer's law is obeyed over the concentration range of0-2. 4μg/ml NO. Satisfactory results have been achieved when applying the method to thedetermination of nitrite in pork products, which are in agreement with the results of the N(1-naphthyl) ethylenediamine dihydrochloride photometric method.

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What this paper is about

A new fairly selective and simple UV spectrophotometric method for the determination of nitrite is developed. Nitrite reacts with safranin O in acdic medium (HCl) to forma product, which is measured at 350um. Beer's law is obeyed over the concentration range of0-2. 4μg/ml NO. Satisfactory results have been achieved when applying the method to thedetermination of nitrite in pork products, which are in agreement with the results of the N(1-naphthyl) ethylenediamine dihydrochloride photometric method.

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Available abstract

A new fairly selective and simple UV spectrophotometric method for the determination of nitrite is developed. Nitrite reacts with safranin O in acdic medium (HCl) to forma product, which is measured at 350um. Beer's law is obeyed over the concentration range of0-2. 4μg/ml NO. Satisfactory results have been achieved when applying the method to thedetermination of nitrite in pork products, which are in agreement with the results of the N(1-naphthyl) ethylenediamine dihydrochloride photometric method.

Key concepts: Nitrite, Chemistry, Ethylenediamine, Spectrophotometry, Nuclear chemistry, Chromatography, Inorganic chemistry, Nitrate

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