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HERO ID
6701231
Reference Type
Journal Article
Title
Problems in the application of the three-step BCR sequential extraction to low amounts of sediments: An alternative validated route
Author(s)
Zhou, S; Xu, MG; Ciceri, Bao; Giussani, B; Pozzi, A; Dossi, C; Recchia, S; ,
Year
2008
Is Peer Reviewed?
1
Journal
Talanta
ISSN:
0039-9140
EISSN:
1873-3573
Publisher
ELSEVIER SCIENCE BV
Location
AMSTERDAM
Page Numbers
621-626
PMID
18585330
DOI
10.1016/j.talanta.2008.04.006
Web of Science Id
WOS:000257577100020
URL
https://linkinghub.elsevier.com/retrieve/pii/S0039914008002646
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Abstract
Poor recoveries are obtained if the BCR three-step sequential extraction is applied to 100 mg specimens rather than to 1 g. It is observed that analytes are lost during each phase separation which is carried out via centrifugation and can be hardly quantitatively performed on 100 mg sediment specimens. An alternative procedure, which is carried out on a single empty SPE column and involves separation by flitration, is developed to solve this problem. The proposed method is validated on 100mg samples of certified sediment (BCR-701), but could be potentially used for even lower sediment specimens. Problems related to pH stability during step 2 and its influence on recoveries is also reported. (C) 2008 Elsevier B.V. All rights reserved.
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