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Foliar analysis by direct‐reading vacuum emission spectrometry
Author(s) -
Johnson John S.,
Pope Robert,
Sandon Peter T. S.
Publication year - 1975
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.2740260410
Subject(s) - potassium , chemistry , pellets , manganese , analytical chemistry (journal) , sodium , zinc , boron , mass spectrometry , magnesium , sulfur , inorganic chemistry , chromatography , materials science , organic chemistry , composite material
A method is described for the determination of calcium, magnesium, phosphorus, sodium, inorganic sulphur, boron, manganese and zinc in leaves by direct‐reading vacuum‐emission spectrometry. The ashed samples are diluted with graphite and cellulose. Potassium chloride is added as a spectroscopic buffer and germanium dioxide as an internal standard and the samples are pressed into pellets suitable for excitation. Potassium is determined by flame‐photometry.