Journal ArticleDOI
Automated analysis for nitrate by hydrazine reduction
TLDR
An automated procedure for the simultaneous determinations of nitrate and nitrite in water is presented in this paper, where the rate of analysis is 20 samples/hr and the 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.About:
This article is published in Water Research.The article was published on 1967-03-01. It has received 638 citations till now. The article focuses on the topics: Nitrite & Nitrate.read more
Citations
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Book ChapterDOI
Nitrogen - inorganic forms.
TL;DR: In this article, Bremner et al. defined the nonexchangeable NHt as the NHt in soil that cannot be replaced by a neutral potassium salt solution (SSSA, 1987), in contrast to NHt which is extractable at room temperature with such a solution.
Journal ArticleDOI
Biochemical quality of crop residues and carbon and nitrogen mineralization kinetics under nonlimiting nitrogen conditions
TL;DR: In this paper, the fate of C and N from 47 types of crop residues and their biochemical characteristics during a soil incubation at 15°C were established, where the incubations were carried out under non-limiting N in order to differentiate the effects of biochemical characteristics of residues from those of soil N availability.
Book
Measuring plant-associated nitrogen fixation in agricultural systems
Murray Unkovich,David F. Herridge,Mark B. Peoples,Georg Cadisch,B. Boddey,Ken E. Giller,Bruno José Rodrigues Alves,Phillip M. Chalk +7 more
Journal ArticleDOI
Periphyton biomass dynamics in gravel bed rivers: the relative effects of flows and nutrients
TL;DR: It is concluded that hydrological factors contribute at least equally with nutrients to the differences in periphyton biomass between the gravel-bed study rivers.
References
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Journal ArticleDOI
The spectrophotometric determination of nitrate in natural waters, with particular reference to sea-water
J.B. Mullin,J.P. Riley +1 more
TL;DR: In this paper, the conditions for the precise spectrophotometric determination of microgram amounts of ammonia by means of the sodium phenate-hypochlorite method of RUSSELL have been investigated.
Journal ArticleDOI
Continuous Sampling and Ultramicrodetermination of Nitrogen Dioxide in Air
Journal ArticleDOI
An automatic method for determining nitrate and nitrite in fresh and saline waters
Journal ArticleDOI
Diazotization Method for Nitrate and Nitrite
TL;DR: NITRATE inorganic is combined a prevalent nitrogen form of in inorganic ombined nitrogen in water and ordinarily is present in concentrations ranging from a few tenths of a part per million to several parts per million, except in polluted water where concentrations may be greater than 100 ppm.
Journal ArticleDOI
Impoundment Influences on Water Quality
TL;DR: In this article, the use of impounded water for control and maintenance of downstream water quality is discussed, as well as the maintenance of good quality water throughout an entire river basin by using systems analysis techniques to interrelate the various components that affect water quality in the river basin.
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A modified single solution method for the determination of phosphate in natural waters
J. Murphy,J.P. Riley +1 more