Reverse polarity capillary zone electrophoresis analysis of nitrate and nitrite in natural water samples

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Description

This paper describes the application of reverse polarity capillary zone electrophoresis (RPCE) for rapid and accurate determination of nitrate and nitrite in natural water samples. Using hexamethonium bromide (HMB) as an electroosmotic flow modifier in a borate buffer at pH 9.2, the resolution of nitrate and nitrite was accomplished in less than 3 minutes. RPCE was compared with ion chromatographic (IC) and cadmium reduction flow injection analysis (Cd-FIA) methods which are the two most commonly used standard methods for the analysis of natural water samples for nitrate and nitrite. When compared with the ion chromatographic method for the determination of ... continued below

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34 p.

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Metcalf, S.G. June 11, 1998.

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Description

This paper describes the application of reverse polarity capillary zone electrophoresis (RPCE) for rapid and accurate determination of nitrate and nitrite in natural water samples. Using hexamethonium bromide (HMB) as an electroosmotic flow modifier in a borate buffer at pH 9.2, the resolution of nitrate and nitrite was accomplished in less than 3 minutes. RPCE was compared with ion chromatographic (IC) and cadmium reduction flow injection analysis (Cd-FIA) methods which are the two most commonly used standard methods for the analysis of natural water samples for nitrate and nitrite. When compared with the ion chromatographic method for the determination of nitrate and nitrite, RPCE reduced analysis time, decreased detection limits by a factor of 10, cut laboratory wastes by more than two orders of magnitude, and eliminated interferences commonly associated with IC. When compared with the cadmium reduction method, RPCE had the advantage of simultaneous determination of nitrate and nitrite, could be used in the presence of various metallic ions that normally interfere in cadmium reduction, and decreased detection limits by a factor of 10.

Physical Description

34 p.

Notes

OSTI as DE00016960

Medium: P; Size: 34 pages

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  • Other Information: PBD: 11 Jun 1998; Supercedes report DE99050726

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  • Other: DE99050726
  • Report No.: HNF--2782-FP
  • Report No.: ON: DE99050726
  • Report No.: BR: EW3120072
  • Grant Number: AC06-96RL13200
  • DOI: 10.2172/16960 | External Link
  • Office of Scientific & Technical Information Report Number: 16960
  • Archival Resource Key: ark:/67531/metadc627484

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  • June 11, 1998

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  • June 16, 2015, 7:43 a.m.

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  • April 12, 2017, 1:42 p.m.

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Metcalf, S.G. Reverse polarity capillary zone electrophoresis analysis of nitrate and nitrite in natural water samples, report, June 11, 1998; (digital.library.unt.edu/ark:/67531/metadc627484/: accessed September 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.