Simultaneous C-H-N and S microdetermination by combustion and gas chromatography

Pella, E.; Colombo, Bruno

doi:10.1007/bf01201732

Cited by 35 publications

(13 citation statements)

References 24 publications

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“…One to 2 g of the powder obtained was lyophilized and analyzed by catharometry (Fraisse and Schmitt, 1977;Pella and Colombo, 1978) to determine the percentage of carbon and nitrogen present in each sample. The accuracy of each measurement was 95%.…”

Section: Carbon and Nitrogen Content Determinationsmentioning

confidence: 99%

Alfalfa Root Flavonoid Production Is Nitrogen Regulated

et al. 1995

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Higher plants synthesize a wide variety of phenolic compounds during normal growth and development. These compounds are products of the phenylpropanoid biosynthetic pathway in both root and shoot tissues. They generally accumulate at relatively high concentrations in the cell vacuole and are chemically associated with sugars (McClure, 1975).In pathogen-plant interactions, certain end products of the (iso)flavonoid biosynthesis pathway serve as phytoalexins in plant defense reactions (reviewed by McClure, 1975;Hahlbrock and Scheel, 1989;Peters and Verma, 1990;Rao, 1990), or as chemoattractants toward pathogenic and symbiotic bacteria (Peters and Verma, 1990), or as signal molecules required for the induction of essential bacterial genes, leading to the appropriate interaction with the host plants (Peters and Verma, 1990). In the association between

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Section: Carbon and Nitrogen Content Determinationsmentioning

confidence: 99%

Alfalfa Root Flavonoid Production Is Nitrogen Regulated

et al. 1995

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“…According to Dugan [18,67,68] as well as to other authors [9,20], copper does not only react with SO2 only in the temperature range above 850 ~ while retaining oxygen. According to Dugan [18,67,68] as well as to other authors [9,20], copper does not only react with SO2 only in the temperature range above 850 ~ while retaining oxygen.…”

Section: Fig 2 Su]phur Determination By Gas Chromatographymentioning

confidence: 90%

“…Thus, chlorine and bromine must be selectively eliminated with appropriate absorbers. Pella and Colombo reported from their studies a constant negative error of 0.6~g S [9] which can increase to higher values when some improper reagents are used in the system [85]. Sulphuric acid may also be produced in the reactor due to the reaction of sulphur trioxide with water.…”

Section: Chromatographic Separation Of Sulphur Compoundsmentioning

confidence: 98%

“…At present, the commonly employed methods of combustion in oxygen are the ignition technique introduced by Ingram in 1961 [6] or the flash combustion proposed by Japanese workers [711 and Pella [8,9]. Ingram showed that a rapid combustion is obtainable by quickly introducing the Pt boat with the sample into a closed system heated to 900 ~ and filled with oxygen, thereby igniting and simultaneously oxidizing the organic sample.…”

Section: Combustion Of Sulphur Compounds In Oxygenmentioning

confidence: 99%

“…Sulphuric acid may also be produced in the reactor due to the reaction of sulphur trioxide with water. He noticed using the apparatus of Pella and Colombo [9] that the error of determination was proportional to the volume and depen- 16" [82] dent on the type of filling of chromatographic columns. The fulfillment of this requirement, however, does not preclude a negative error of measurements which, according to Dugan, may amount to 0.5 #g S [68].…”

Section: Chromatographic Separation Of Sulphur Compoundsmentioning

confidence: 99%

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Automated determination of sulphur in organic compounds

Kaczmarek

Gondko

1986

Mikrochim Acta

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The paper reviews methods of sulphur determination over the last 120 years. Classical methods are presented in a historical view, and the present state of automatic procedures of sulphur estimation is discussed. 104 key references concerning sulphur analysis are cited. On the basis of the present level of the development of elemental analysis, a prognosis of directions of the development of sulphur microanalysis is attempted.

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Isotopenh�ufigkeitsanalyse von Kohlenstoff, Stickstoff und Schwefel mittels Ger�tekopplung Elementaranalysator-Massenspektrometer

Pichlmayer

Blochberger

1988

Z. Anal. Chem.

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Simultaneous C-H-N and S microdetermination by combustion and gas chromatography

Cited by 35 publications

References 24 publications

Alfalfa Root Flavonoid Production Is Nitrogen Regulated

Alfalfa Root Flavonoid Production Is Nitrogen Regulated

Automated determination of sulphur in organic compounds

Isotopenh�ufigkeitsanalyse von Kohlenstoff, Stickstoff und Schwefel mittels Ger�tekopplung Elementaranalysator-Massenspektrometer

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