2024-03-28T17:38:18Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/602262016-02-17T11:38:28Zcom_10261_15com_10261_6col_10261_268
DIGITAL.CSIC
author
Díaz Barrientos, Encarnación
author
Madrid, Luis
author
Cabrera, Francisco
author
Contreras, M. C.
2012-11-14T18:27:01Z
2012-11-14T18:27:01Z
1991
Communications in Soil Science and Plant Analysis 22(15-16): 1559- 1568 (1991)
http://hdl.handle.net/10261/60226
10.1080/00103629109368516
Two commonly used methods of dissolution of heavy metals in soils and sediments for atomic absorption spectrophotomety (AAS) determination were compared. Dry ashing and subsequent dissolution with 3 N HCl in a block digestor was shown to give a better estimate of the aqua regia‐soluble fraction than wet ash digestion with a mixture of HNO3 and HClO4 acids using reference materials. But both methods extracted significantly less than the certified total contents of most metals. In soils and sediments from SW Spain, the amounts extracted by the block heater method were generally greater than those obtained by wet ash digestion. In agricultural soils, highly significant differences were found between the amounts of Fe, Cu, and Zn extracted by both methods, but the significance decreases if both methods are used on soils or sediments from mining areas where metal contents are likely to be from recent deposits.
eng
closedAccess
Comparison of two methods of sample preparation for determination by atomic absorption spectrophotometry of heavy metals in soils and sediments
artículo
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URL
https://digital.csic.es/bitstream/10261/60226/1/accesoRestringido.pdf
File
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accesoRestringido.pdf
URL
https://digital.csic.es/bitstream/10261/60226/5/accesoRestringido.pdf.txt
File
MD5
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text/plain
accesoRestringido.pdf.txt