Quantitative Analysis of Aqueous Nitrite/Nitrate Solutions by Infrared Internal Reflectance Spectrometry

R. T. Yang; M. J.D. Low

doi:10.1021/ac60334a013

Quantitative Analysis of Aqueous Nitrite/Nitrate Solutions by Infrared Internal Reflectance Spectrometry

R. T. Yang
, M. J.D. Low

Department of Chemical and Biological Engineering

New York University

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

Abstract

Infrared spectra of aqueous NO₂ and NO₃ solutions, and of binary mixtures, weee recorded using internal reflection techniques and a Fourier transform spectrometer. N0₂- could be detected at a concentration of 0.02M, and NO₃ at 0.00M. However, NO₃- also became adsorbed on the Ge prism. After making corrections for NO₃- adsorption and for overlapping of NO₂- and NO₃-bands, it was possible to analyze binary mixtures with concentrations as low as [NO₃—] = 0.03M and [NO₂-] = 0.05M. By adjusting the optics so that the usually totally absorbing water stretching band had a transmittance of about 50%, it was possible to observe N-H and C-H stretching bands of solutes. Dissolved materials cause the water structure and consequently the water absorption to change, causing distortions of the background of ratioed spectra of aqueous solutions. These distortions may influence qualitative and quantitative observations.

Original language	English
Pages (from-to)	2014-2018
Number of pages	5
Journal	Analytical Chemistry
Volume	45
Issue number	12
DOIs	https://doi.org/10.1021/ac60334a013
State	Published - Oct 1 1973

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title = "Quantitative Analysis of Aqueous Nitrite/Nitrate Solutions by Infrared Internal Reflectance Spectrometry",

abstract = "Infrared spectra of aqueous NO2 and NO3 solutions, and of binary mixtures, weee recorded using internal reflection techniques and a Fourier transform spectrometer. N02- could be detected at a concentration of 0.02M, and NO3 at 0.00M. However, NO3- also became adsorbed on the Ge prism. After making corrections for NO3- adsorption and for overlapping of NO2- and NO3-bands, it was possible to analyze binary mixtures with concentrations as low as [NO3—] = 0.03M and [NO2-] = 0.05M. By adjusting the optics so that the usually totally absorbing water stretching band had a transmittance of about 50\%, it was possible to observe N-H and C-H stretching bands of solutes. Dissolved materials cause the water structure and consequently the water absorption to change, causing distortions of the background of ratioed spectra of aqueous solutions. These distortions may influence qualitative and quantitative observations.",

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year = "1973",

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T1 - Quantitative Analysis of Aqueous Nitrite/Nitrate Solutions by Infrared Internal Reflectance Spectrometry

AU - Yang, R. T.

AU - Low, M. J.D.

PY - 1973/10/1

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N2 - Infrared spectra of aqueous NO2 and NO3 solutions, and of binary mixtures, weee recorded using internal reflection techniques and a Fourier transform spectrometer. N02- could be detected at a concentration of 0.02M, and NO3 at 0.00M. However, NO3- also became adsorbed on the Ge prism. After making corrections for NO3- adsorption and for overlapping of NO2- and NO3-bands, it was possible to analyze binary mixtures with concentrations as low as [NO3—] = 0.03M and [NO2-] = 0.05M. By adjusting the optics so that the usually totally absorbing water stretching band had a transmittance of about 50%, it was possible to observe N-H and C-H stretching bands of solutes. Dissolved materials cause the water structure and consequently the water absorption to change, causing distortions of the background of ratioed spectra of aqueous solutions. These distortions may influence qualitative and quantitative observations.

AB - Infrared spectra of aqueous NO2 and NO3 solutions, and of binary mixtures, weee recorded using internal reflection techniques and a Fourier transform spectrometer. N02- could be detected at a concentration of 0.02M, and NO3 at 0.00M. However, NO3- also became adsorbed on the Ge prism. After making corrections for NO3- adsorption and for overlapping of NO2- and NO3-bands, it was possible to analyze binary mixtures with concentrations as low as [NO3—] = 0.03M and [NO2-] = 0.05M. By adjusting the optics so that the usually totally absorbing water stretching band had a transmittance of about 50%, it was possible to observe N-H and C-H stretching bands of solutes. Dissolved materials cause the water structure and consequently the water absorption to change, causing distortions of the background of ratioed spectra of aqueous solutions. These distortions may influence qualitative and quantitative observations.

UR - https://www.scopus.com/pages/publications/33947086239

U2 - 10.1021/ac60334a013

DO - 10.1021/ac60334a013

M3 - Article

AN - SCOPUS:33947086239

SN - 0003-2700

VL - 45

SP - 2014

EP - 2018

JO - Analytical Chemistry

JF - Analytical Chemistry

IS - 12

ER -

Quantitative Analysis of Aqueous Nitrite/Nitrate Solutions by Infrared Internal Reflectance Spectrometry

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