A Simple Method for Eliminating the Interference of CH3COONa in NO3--N Determination by UV Spectrophotometric Method

Shan He; Jian Qiang Zhao; Bo Hu

doi:10.4028/www.scientific.net/AMR.955-959.1172

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 955-959A Simple Method for Eliminating the Interference...

A Simple Method for Eliminating the Interference of CH₃COONa in NO₃^--N Determination by UV Spectrophotometric Method

Abstract:

In order to solve the interference of CH₃COONa on measuring nitrate nitrogen (NO₃^--N) concentration by ultra-violet (UV) spectrophotometric method, a series of tests were done. The solution with different concentrations of CH₃COONa was added respectively to a set of standard solutions, which the concentrations of NO₃^--N were already known, and the interference degrees of CH₃COONa on the measurement of NO₃^- by UV spectrophotometric method were examined. The results indicated that the interference degrees of CH₃COONa on the measurement of NO₃^--N concentrations were proportional to the concentrations of CH₃COONa in the standard solutions. Based on the tests, a set of correction curves was established, and the accurate NO₃^--N concentrations can be determined by the correction curves conveniently and quickly.

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Periodical:

Advanced Materials Research (Volumes 955-959)

Pages:

1172-1175

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.955-959.1172

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Online since:

June 2014

Authors:

Shan He, Jian Qiang Zhao, Bo Hu

Keywords:

Correction Curve, Interference, Nitrate Nitrogen, Ultraviolet Spectrophotometric Method

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