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Automated analysis for nitrate by hydrazine reduction

Abstract

An automated procedure for the simultaneous determinations of nitrate and nitrite in water is presented. Nitrite initially present in the sample is determined by a conventional diazotization-coupling reaction. Nitrate in another portion of sample is quantitatively reduced with hydrazine sulfate to nitrite which is then determined by the same diazotization-coupling reaction. Subtracting the nitrite initially present in the sample from that after reduction yields nitrite equivalent to nitrate initially in the sample. The rate of analysis is 20 samples/hr. Applicable range of the described method is 0.05-10 mg/l nitrite or nitrate nitrogen; however, increased sensitivity can be obtained by suitable modifications.
Publication Date:
Jan 01, 1967
Product Type:
Journal Article
Reference Number:
EDB-84-011296
Resource Relation:
Journal Name: Water Res.; (United Kingdom); Journal Volume: 1
Subject:
54 ENVIRONMENTAL SCIENCES; NITRATES; DIAZOTIZATION; AUTOMATION; ECOLOGICAL CONCENTRATION; HYDRAZINE; MONITORING; NITRITES; QUANTITATIVE CHEMICAL ANALYSIS; REDUCTION; WATER POLLUTION; CHEMICAL ANALYSIS; CHEMICAL REACTIONS; NITROGEN COMPOUNDS; OXYGEN COMPOUNDS; POLLUTION; 520200* - Environment, Aquatic- Chemicals Monitoring & Transport- (-1989)
OSTI ID:
5429298
Country of Origin:
United Kingdom
Language:
English
Other Identifying Numbers:
Journal ID: CODEN: WATRA
Submitting Site:
HEDB
Size:
Pages: 205-216
Announcement Date:
Aug 01, 1983

Citation Formats

Kamphake, L J, Hannah, S A, and Cohen, J M. Automated analysis for nitrate by hydrazine reduction. United Kingdom: N. p., 1967. Web.
Kamphake, L J, Hannah, S A, & Cohen, J M. Automated analysis for nitrate by hydrazine reduction. United Kingdom.
Kamphake, L J, Hannah, S A, and Cohen, J M. 1967. "Automated analysis for nitrate by hydrazine reduction." United Kingdom.
@misc{etde_5429298,
title = {Automated analysis for nitrate by hydrazine reduction}
author = {Kamphake, L J, Hannah, S A, and Cohen, J M}
abstractNote = {An automated procedure for the simultaneous determinations of nitrate and nitrite in water is presented. Nitrite initially present in the sample is determined by a conventional diazotization-coupling reaction. Nitrate in another portion of sample is quantitatively reduced with hydrazine sulfate to nitrite which is then determined by the same diazotization-coupling reaction. Subtracting the nitrite initially present in the sample from that after reduction yields nitrite equivalent to nitrate initially in the sample. The rate of analysis is 20 samples/hr. Applicable range of the described method is 0.05-10 mg/l nitrite or nitrate nitrogen; however, increased sensitivity can be obtained by suitable modifications.}
journal = {Water Res.; (United Kingdom)}
volume = {1}
journal type = {AC}
place = {United Kingdom}
year = {1967}
month = {Jan}
}