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Blank values, adsorption, pre-concentration, and sample preservation for arsenic speciation of environmental water samples

Title data

Huang, Jen-How ; Ilgen, Gunter:
Blank values, adsorption, pre-concentration, and sample preservation for arsenic speciation of environmental water samples.
In: Analytica Chimica Acta. Vol. 512 (2004) Issue 1 . - pp. 1-10.
ISSN 1873-4324
DOI: https://doi.org/10.1016/j.aca.2004.02.043

Abstract in another language

Arsenic is the focus of public attention because of its toxicity. Arsenic analysis, its toxicity, and its fate in the environment have been broadly studied, still its blank values, adsorption to sampling materials and pre-concentration of water samples as well as stabilization of arsenic compounds in water samples under field conditions have been very little investigated. In this study, we investigate the blank values and adsorption of arsenic compounds for different laboratory materials. We focused our work onto pre-concentration of water samples and how to stabilize arsenic compounds under field conditions. When using glassware for arsenic analysis, we suggest testing arsenic blank values due to the potential release of arsenic from the glass. Adsorption of arsenic compounds on different laboratory materials (80%) and low transformation of arsenic compounds. Thus, concentrations as low as 1 ng As l-1 can be determined. Addition of ethylenediaminetetraacetic acid (EDTA) and storage in the dark can decrease the transformation among arsenic compounds in rainwater and soil-pore water for at least a week under field conditions. Author Keywords: Arsenic; Pre-concentration; Blank value; Adsorption; Stability; Speciation

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: BAYCEER21243
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Chair Soil Ecology
Research Institutions > Research Centres > Bayreuth Center of Ecology and Environmental Research- BayCEER
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences
Research Institutions
Research Institutions > Research Centres
Result of work at the UBT: Yes
DDC Subjects: 500 Science
Date Deposited: 09 Oct 2015 05:56
Last Modified: 09 Oct 2015 05:56
URI: https://eref.uni-bayreuth.de/id/eprint/20232