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Comparison of digestion methods for total elemental analysis of peat and separation of its organic and inorganic components

The Analyst

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Abstract

In order to find the most efficient digestion method for the total elemental recovery in peat, ten samples were subjected to different techniques and analysed for Ca, Mg, Fe, AI, Na, K, Mn, P, Zn, Cu, Li, Cd, Co, Ni, Pb and Si using atomic-absorption spectrophotometry. The most satisfactory procedures were dry ashing followed by hydrofluoric acid treatment and wet digestion using a mixture of hot nitric, perchloric and hydrofluoric acids. The wet digestion offers the advantage of a single decomposition method for the determination of Ca, Mg, Fe, AI, K, Na, Mn, Cu, Li, Zn and P. An alkaline fusion technique was required for the determination of Si. Hydrogen peroxide was used to separate the peat into its organic and inorganic components, leading to the total recovery of the elements for both fractions.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Comparison of digestion methods for total elemental analysis of peat and separation of its organic and inorganic components
Series title:
The Analyst
Volume
110
Issue:
3
Year Published:
1985
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
The Analyst
First page:
237
Last page:
242
Number of Pages:
6