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Aqua regia extractable selenium concentrations of some Scottish topsoils measured by ICP‐MS and the relationship with mineral and organic soil components
Author(s) -
Shand Charles A,
Balsam Matthias,
Hillier Stephen J,
Hudson Gordon,
Newman Gareth,
Arthur John R,
Nicol Fergus
Publication year - 2010
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.3905
Subject(s) - aqua regia , soil water , environmental chemistry , chemistry , loss on ignition , soil test , environmental science , soil science , metal , organic chemistry
BACKGROUND: To provide information concerning the geographical distribution of selenium (Se) in the soils of Scotland, we analysed 47 arable soils selected on the basis of their parent rock, which were expected to have relatively high, low or unclassified Se concentrations. To investigate relationships between the actual minerals in the soils and the aqua regia extractable Se concentration of the soil, soil minerals were quantified by X‐ray diffraction. RESULTS: The aqua regia extractable Se concentrations of the soils were between 0.19 and 1.46 mg kg −1 . No simple correlation between the aqua regia extractable Se concentrations of the soil and the parent rock classification estimated by soil survey was evident. Partial least squares analysis revealed that the aqua regia extractable Se concentration of the soils was positively related to loss on ignition (LOI) or C concentration and negatively related to the K‐feldspar concentration, with other minerals being less important. CONCLUSION: The Se concentration of arable topsoils from Scotland is more related to LOI or carbon concentration, with parent material being less important. Copyright © 2010 Society of Chemical Industry