IN SITU MEASUREMENT OF DEPTH PROFILES OF LABILE METAL SPECIES IN SEDIMENTS BY TECHNIQUE OF DIFFUSIVE GRADIENTS IN THIN FILMS

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26310%2F03%3APU42066" target="_blank" >RIV/00216305:26310/03:PU42066 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

čeština

Original language name

HLOUBKOVÉ PROFILY LABILNÍCH KOVOVÝCH SPECIES V SEDIMENTECH A JEJICH IN SITU MĚŘENÍ TECHNIKOU DIFUZNÍHO GRADIENTU V TENKÉM FILMU

Original language description

The technique of diffusive gradients in thin films (DGT) presents a new approach in in-situ measurement of trace metal species in environmental systems. Using the DGT technique, trace metals are measured by their accumulation on a selective chelating resin after passage through a well-defined diffusive gel layer. The layer used in this work has an open structure that allows free diffusion of inorganic labile species and some organic metal complexes. Accumulated metals are subsequently analyzed after wasshing the resin layer with a known volume of acid solution by F AAS for major metals (Fe, Mn) and electrothermal AAS for trace metals (Cd, Pb). The depth profiles in an artificial lake sediment with 0.5 cm resolution for major and trace metals, obtainedusing two DGT units with different thickness of diffusive gel layer (0.4 and 1.2 mm) are discussed. Reliable depth profiles of trace metals in sediments are essential for studies of pollution, trace metal cycling and processes occurring i

Czech name

HLOUBKOVÉ PROFILY LABILNÍCH KOVOVÝCH SPECIES V SEDIMENTECH A JEJICH IN SITU MĚŘENÍ TECHNIKOU DIFUZNÍHO GRADIENTU V TENKÉM FILMU

Czech description

The technique of diffusive gradients in thin films (DGT) presents a new approach in in-situ measurement of trace metal species in environmental systems. Using the DGT technique, trace metals are measured by their accumulation on a selective chelating resin after passage through a well-defined diffusive gel layer. The layer used in this work has an open structure that allows free diffusion of inorganic labile species and some organic metal complexes. Accumulated metals are subsequently analyzed after wasshing the resin layer with a known volume of acid solution by F AAS for major metals (Fe, Mn) and electrothermal AAS for trace metals (Cd, Pb). The depth profiles in an artificial lake sediment with 0.5 cm resolution for major and trace metals, obtainedusing two DGT units with different thickness of diffusive gel layer (0.4 and 1.2 mm) are discussed. Reliable depth profiles of trace metals in sediments are essential for studies of pollution, trace metal cycling and processes occurring i

Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

CB - Analytical chemistry, separation

OECD FORD branch

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Project

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Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2003

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Chemické Listy

ISSN

0009 - 2770

e-ISSN

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Volume of the periodical

97

Issue of the periodical within the volume

12

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

5

Pages from-to

1184-1188

UT code for WoS article

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EID of the result in the Scopus database

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