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A rapid colorimetric method for the determination of boron, with its application to soils and crops

โœ Scribed by D. J. Higgons

Publisher
John Wiley and Sons
Year
1951
Tongue
English
Weight
455 KB
Volume
2
Category
Article
ISSN
0022-5142

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โœฆ Synopsis

Abstract

Waxoline purple AS has been established as an efficient colorimetric reagent for the determination of boron in 84% sulphuric acid. Data are presented showing the loss of boron during the orthodox ashing techniques of both plant residues and soil extracts. Conditions of ignition have been established whereby it is possible to check the relative boron status of any crop or soil when compared against standards from the same crop or similar soil type known to have a satisfactory boron status.

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However, there were significant correlations between the enthalpy involved and each of VAG maximum viscosity, breakdown, viscosity at 50 ยฐC and set back (r = 0.53, P < 0.05; r = 0.49, P < 0.05; r = 0.62, P < 0.05; r = 0.65, P < 0.01, respectively). For RVA data, correlations were found only between