An application of a modified microwave total dissolution technique for soils

Application of a microwave dissolution technique to soil materials aided by acid digestion procedures has many advantages, but the incomplete dissolution of sandy soils has been noted. The objectives of this study were to modify a microwave oven digestion technique to facilitate the determination of...

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Bibliographic Details
Published inCommunications in soil science and plant analysis Vol. 26; no. 5/6
Main Authors Ammons, J.T. (THe University of Tennessee, Knoxville, TN.), Essington, M.E, Lewis, R.J, Gallagher, A.O, Lessman, G.M
Format Journal Article
LanguageEnglish
Published 01.03.1995
Subjects
ACIDE
ACIDE MINERAL
ACIDOS
ACIDOS INORGANICOS
ALLUVION
ALUVION
ANALISIS DEL SUELO
ANALYSE DE SOL
ARENA
COMPOSICION QUIMICA
COMPOSITION CHIMIQUE
ELEMENTO PRIMARIO DEL SUELO
FLUOR
ROCHE MERE
SABLE
SECUENCIA DE SUELOS
SEQUENCE DES SOLS
TECHNIQUE ANALYTIQUE
TECNICAS ANALITICAS
TRAITEMENT AUX MICROONDES
TRATAMIENTO POR MICROONDAS
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Summary:Application of a microwave dissolution technique to soil materials aided by acid digestion procedures has many advantages, but the incomplete dissolution of sandy soils has been noted. The objectives of this study were to modify a microwave oven digestion technique to facilitate the determination of the total elemental content of soils and geologic materials containing greater than 45% sand and apply these data to determine natural separations in parent materials. A microwave dissolution technique using aqua regia (HNO3 and HCI) and hydrofluoric acid (HF) was modified such that the HF is added to the solid 16 hours prior to aqua-regia addition and subsequent microwave heating. Elemental recoveries were validated using a NBS coal fly ash standard. This procedure was applied to soil core samples representing a wide range of geological and pedological weathering sequences and soil textural classes. Separations in the parent material were determined by observing natural breaks in the elemental concentrations and comparing them to soil morphology data
Bibliography:P33
9550208
ISSN:0010-3624
1532-2416
DOI:10.1080/00103629509369338