Detail publikace

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

Diviš, P., Dočekalová, H., Řezáčová, V.

Originální název

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

Anglický název

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

Typ

článek v časopise - ostatní, Jost

Jazyk

čeština

Originální abstrakt

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 washing 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, obtained using 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 in sediments.

Anglický abstrakt

IN SITU MEASUREMENT OF DEPTH PROFILES OF LABILE METAL SPECIES IN SEDIMENTS BY TECHNIQUE OF DIFFUSIVE GRADIENTS IN THIN FILMS 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 washing 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, obtained using 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 in sediments.

Klíčová slova v angličtině

DGT, sediment, depth profiles, Mn, Fe, Cd, Pb, AAS

Autoři

Diviš, P., Dočekalová, H., Řezáčová, V.

Vydáno

1. 12. 2003

Nakladatel

ČSCH

Místo

Praha

ISSN

0009-2770

Periodikum

Chemické listy

Ročník

97

Číslo

12

Stát

Česká republika

Strany od

1184

Strany do

1189

Strany počet

5

URL

http://chemicke-listy.vscht.cz/

BibTex

@article{BUT41961,
  author="Pavel {Diviš} and Hana {Dočekalová} and Veronika {Řezáčová}",
  title="HLOUBKOVÉ PROFILY LABILNÍCH KOVOVÝCH SPECIES V SEDIMENTECH A JEJICH IN SITU MĚŘENÍ TECHNIKOU DIFUZNÍHO GRADIENTU V TENKÉM FILMU",
  journal="Chemické listy",
  year="2003",
  volume="97",
  number="12",
  pages="1184--1189",
  issn="0009-2770",
  url="http://chemicke-listy.vscht.cz/"
}