1978
DOI: 10.1016/0043-1354(78)90107-0
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Ammonia determination based on indophenol formation with sodium salicylate

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Cited by 1,131 publications
(510 citation statements)
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“…Determination of fermentation products and enzyme activities of the caecal flora Ammonia concentration was measured with the procedure of Verdouw et al (1978) using an auto-analyser (Technicon, Domont, France). VFA concentrations were determined by gas chromatography (CP9000, Chrompack, Middelburg, Pays-Bas, The Netherlands) according to the method of Jouany (1982) adapted to a semi-capillary column.…”
Section: Small Intestinal Enzyme Activities Determinationmentioning
confidence: 99%
“…Determination of fermentation products and enzyme activities of the caecal flora Ammonia concentration was measured with the procedure of Verdouw et al (1978) using an auto-analyser (Technicon, Domont, France). VFA concentrations were determined by gas chromatography (CP9000, Chrompack, Middelburg, Pays-Bas, The Netherlands) according to the method of Jouany (1982) adapted to a semi-capillary column.…”
Section: Small Intestinal Enzyme Activities Determinationmentioning
confidence: 99%
“…Water samples were collected and the colorimetric method was applied to determine total ammonia (NH 3 + NH 4 + ) and nitrite (NO 2 -) concentrations, according to Verdouw et al (1978) and Boyd and Tucker (1992), respectively. Non-ionized ammonia values were calculated according to Kubitza (2003).…”
Section: Water Quality Monitoringmentioning
confidence: 99%
“…*Indica diferença entre a forma in natura e tratada do farelo pelo teste F (P<0,05). 550A); pH (6,82±0,14) (pHmetro Servylab, MPA 210-P); amônia (0,11±0,09 mg L -1 ) (VERDOUW et al, 1978); nitrito (0,05±0,01 mg L -1 ); alcalinidade (20,78±5,32 mg L -1 CaCO 3 ) e dureza (43,56±10,28 mg L -1 CaCO 3 ) (BOYD & TUCKER, 1992). Antes de cada pesagem, os peixes jejuaram por 18 horas e, a seguir, foram anestesiados com eugenol (20μL de extrato puro L -1 água).…”
Section: Methodsunclassified