SIMPLE MICROWAVE DIGESTION TECHNIQUE FOR ELEMENTAL ANALYSIS OF MINERAL SOIL SAMPLES

1 November 1990

journal article
Published by Canadian Science Publishing in Canadian Journal of Soil Science

Vol. 70 (4) , 617-620
https://doi.org/10.4141/cjss90-064

Abstract

A new, rapid, and inexpensive method is described for digestion and dissolution of mineral soil and clay samples for determination of total elemental abundance. Standard soil samples were dissolved using HF and HNO₃ in 60 mL Teflon bombs. Dissolution was complete after 7 min using a household microwave oven operating at 350 W. Addition of H₃BO₃ stabilized the digests against loss of silicon. Precise and accurate results were obtained for digests analyzed by inductively coupled plasma atomic emission spectrometry for total content of Si, Al, Fe, Mg, Ca, Na, K, and Mn. Key words: Elemental composition, standard soils, soil analysis

Keywords

MINERAL SOIL
DIGESTS
ANALYSIS
MICROWAVE
DISSOLUTION
ELEMENTAL
SOIL SAMPLES
STANDARD SOIL

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