Výsledky vyhledávání - "M. R. F. Ashworth"

Ein gesteuerter dynamischer Titrierautomat mit konduktometrischer Indizierung

Autor: F. Stutz, M. R. F. Ashworth, W. Becker, W. Walisch

Publikováno v: Fresenius' Zeitschrift für analytische Chemie. 273:275-281

Der beschriebene Titrierautomat basiert auf folgendem Prinzip: Die Maslosung (Titratorkonzentration c) wird mit der konstanten Geschwindigkeit w einer Mischkammer zugefuhrt, in die gleichzeitig die Probelosung (Titrandenkonzentration x) mit der linea

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3fc99b3c39b35fa69586a07b4b9057c2
https://doi.org/10.1007/bf00459835

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The fractionation of the organic matter, including nitrogen, of certain soils and its relation to their quality

Autor: M. R. F. Ashworth

Publikováno v: The Journal of Agricultural Science. 32:349-359

1. The proximate analysis of a number of widely differing soil profiles has been carried out, employing a slight modification of the scheme used by Waksman and Shewan. This included a nitrogen fractionation with water and acid, similar to that of Wak

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b4f6edbffc036cfa770a2df9d9fab169
https://doi.org/10.1017/s0021859600010285

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Colorimetric determination of diphenylmethane and phenylacetonitrile via the janovsky reaction

Autor: R. Schupp, M. R. F. Ashworth

Publikováno v: Microchimica Acta. 55:366-374

A colorimetric method for determination of phenylacetonitrile in amounts down to 0.6μg is described. It depends on the colour reaction withm-dinitrobenzene and potassium hydroxide in 50% methanol. Microgram amounts of diphenylmethane have been deter

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9766f1a32722bd41af4c0349117eb4b8
https://doi.org/10.1007/bf01216355

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The effect of some organic solvents on the turbidimetric analysis of tertiary butyl alcohol

Autor: M. R. F. Ashworth

Publikováno v: Mikrochimica Acta. 48:175-182

The effect of a number of organic solvents on a previously described turbidimetric method for tertiary butyl alcohol has been studied. It has been shown that most of the solvents exert only a negligible influence and that good calibration curves can

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::31bff8c0336e1fe843767e946fb05a55
https://doi.org/10.1007/bf01215778

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Changes occurring in the organic matter during the decomposition of compost heaps

Autor: M. R. F. Ashworth

Publikováno v: The Journal of Agricultural Science. 32:360-372

1. The decomposition of the organic matter of four medium to large-scale composts has been studied by analysis of samples taken at intervals.2. The bulk materials of the composts were grass-cuttings, oat-straw,Sphagnumpeat and anEriophorumandSphagnum

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b5aba860e205141e26524f8850694bd6
https://doi.org/10.1017/s0021859600010297

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A turbidimetric micromethod for analysis of tertiary butyl alcohol

Autor: M. R. F. Ashworth

Publikováno v: Microchimica Acta. 47:506-512

A rapid turbidimetric method for the analysis of very dilute aqueous solutions of tertiary butyl alcohol has been developed, using a mercuric sulphate/sulphuric acid reagent similar to the Deniges reagent. Concentrations as low as 1–6 mg/litre can

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1059bbfef6c6763b02d328a40f8db37e
https://doi.org/10.1007/bf01221655

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