The determination of nitrites

Barnes, H. M.; Folkard, A. R.

doi:10.1039/an9517600599

Cited by 176 publications

(52 citation statements)

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“…Particulate matter and bacterial cells were removed from samples by centrifugation (27 000 g, 10 min). NOj was determined as described by Barnes & Folkard (1951). NOj was enzymically reduced to N@ by a crude membrane fraction prepared from Escherichiu coli, using procedures described by Dunn et al (1979).…”

Section: Methodsmentioning

confidence: 99%

Effect of Nitrate on Methane Production and Fermentation by Slurries of Human Faecal Bacteria

Allison

Macfarlane²

1988

Microbiology

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Most probable number counts showed that denitrifying species were the numerically predominant NO, reducing bacteria in the faeces of five methanogenic individuals [about 1O1O bacteria (g dry wt faeces)-']. In faecal slurries, however, denitrification was a relatively minor route of NO, dissimilation, since only about 3 % of the NO, was converted to gaseous products, with NO: being mainly reduced to NO, and NHI. When K N 0 2 was added to the slurries, denitrification became quantitatively more significant with approximately 23 % of the NO: being lost as gaseous products. The addition of KNO, (10 mM) to slurries containing either starch or casein significantly decreased H2 and CH4 production. The effect of NO? on methanogenesis was twofold : firstly, H2 accumulation decreased due to diversion of electrons towards NOg/NO? reduction, and as a result of H2 being used as an electron donor for NO, reduction, resulting in the removal of the methanogenic substrate ; secondly, there was direct inhibition of methane-producing bacteria by NO, and NO?. In starch-containing slurries, acetate : butyrate molar ratios were increased when NO: was added but this effect was not observed when casein replaced starch. These results show that the ability of NOg/NO? to act as an electron sink can significantly influence the major products of the human colonic fermentation.

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Section: Methodsmentioning

confidence: 99%

Effect of Nitrate on Methane Production and Fermentation by Slurries of Human Faecal Bacteria

Allison

Macfarlane²

1988

Microbiology

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“…The most probable number method was used for the enumeration of ammonium oxidizing and nitrite oxidizing bacteria (15). Modified Griess-llosvay method was employed for the test of nitrite in the medium after incubation (16). Figure I shows the effects of phosphate application on emission of N 2 0 from ammonium-treated Tsukuba soil incubated under well aerated conditions (60% of WHC) for 20 days.…”

Section: S17mentioning

confidence: 99%

Effecfs of phosphate and calcium carbonate application on emission of N₂0 from soils under aerobic conditions

Minami¹,

Fukushi²

1983

Soil Science and Plant Nutrition

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“…42,England) to eliminate suspended solid particles. Nitritenitrogen present in water was determined by modified Griess-Ilosvay (Barnes andFolkard 1951, Bremner 1965) method. Nitrate-nitrogen present in water was determined colorimetrically (Joergensen and Brookes 1990).…”

Section: Sampling Sites and Collection Of Water Samplesmentioning

confidence: 99%

Bacterial load and chemical pollution level of the River Buriganga, Dhaka, Bangladesh

et al. 1970

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The determination of nitrites

Cited by 176 publications

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Effect of Nitrate on Methane Production and Fermentation by Slurries of Human Faecal Bacteria

Effect of Nitrate on Methane Production and Fermentation by Slurries of Human Faecal Bacteria

Effecfs of phosphate and calcium carbonate application on emission of N₂0 from soils under aerobic conditions

Bacterial load and chemical pollution level of the River Buriganga, Dhaka, Bangladesh

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The determination of nitrites

Cited by 176 publications

References 0 publications

Effect of Nitrate on Methane Production and Fermentation by Slurries of Human Faecal Bacteria

Effect of Nitrate on Methane Production and Fermentation by Slurries of Human Faecal Bacteria

Effecfs of phosphate and calcium carbonate application on emission of N20 from soils under aerobic conditions

Bacterial load and chemical pollution level of the River Buriganga, Dhaka, Bangladesh

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Effecfs of phosphate and calcium carbonate application on emission of N₂0 from soils under aerobic conditions