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Determination of sulphur in plant material by X ‐ray emission spectrometry
Author(s) -
McLachlan K. D.,
Crawford Merrilyn
Publication year - 1970
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/jsfa.2740210804
Subject(s) - sulfur , sample preparation , analytical chemistry (journal) , silicate , sample (material) , humidity , chemistry , relative humidity , mineralogy , materials science , environmental chemistry , chromatography , metallurgy , meteorology , physics , organic chemistry
A simple, rapid technique for the routine determination of total sulphur in pasture samples is described. Eighty samples a day could be measured, with little additional time needed for the sample preparation. Measurements were made directly on loosely packed plant material. The intensity of emission at the sulphur‐Kα line for each plant sample was related to that of a fused reference standard used in silicate analysis. Variations in sample density, due mainly to particle size of the material and ambient humidity, influenced the results, but were eliminated readily. A linear expression, Y = 0.4162 X –0.0047 (r = 0.9968; P <0.001) relating X , the ratio, and Y , the chemically determined sulphur content of the sample, was derived.