Abstract
This study was undertaken to ascertain optimal methods of sampling, preserving, separating, and analyzing arsenic species in potentially contaminated waters. Arsenic species are readily transformed in nature by slight changes in conditions. Each species has a different toxicity and mobility. The conventional field sampling method using filters of 0.45 μm in size could overestimate the dissolved arsenic concentrations, as passing suspended particles that can act as a sink or source of arsenic depending on the site condition. For arsenic species in neutral pH and iron-poor waters, the precipitation can be stable for up to 3 days without any treatment, but for longer periods, a preservative, such as phosphoric acid, is required. Also, the analytical procedure must be selected carefully because the levels and hydride generation efficiencies of arsenic in different species can vary, even for the same amount of arsenic. For arsenic speciation in samples that also include organic species, a hybrid high-performance liquid chromatography (HPLC) column and inductively coupled plasma mass spectrometry (ICP-MS) gave the best resolution and lowest detection limits. However, the procedure using a solid phase extraction (SPE) cartridge can be used economically and conveniently for analyzing samples containing only inorganic arsenic species, such as groundwater, especially that related to mine activity.
| Original language | English |
|---|---|
| Pages (from-to) | 337-346 |
| Number of pages | 10 |
| Journal | Environmental Geochemistry and Health |
| Volume | 29 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 2007 Aug 1 |
Fingerprint
All Science Journal Classification (ASJC) codes
- Environmental Engineering
- Environmental Chemistry
- Water Science and Technology
- Environmental Science(all)
- Geochemistry and Petrology
Cite this
}
An assessment of sampling, preservation, and analytical procedures for arsenic speciation in potentially contaminated waters. / Kim, Youn Tae; Yoon, Hyeon; Yoon, Cheolho; Woo, Nam Chil.
In: Environmental Geochemistry and Health, Vol. 29, No. 4, 01.08.2007, p. 337-346.Research output: Contribution to journal › Article
TY - JOUR
T1 - An assessment of sampling, preservation, and analytical procedures for arsenic speciation in potentially contaminated waters
AU - Kim, Youn Tae
AU - Yoon, Hyeon
AU - Yoon, Cheolho
AU - Woo, Nam Chil
PY - 2007/8/1
Y1 - 2007/8/1
N2 - This study was undertaken to ascertain optimal methods of sampling, preserving, separating, and analyzing arsenic species in potentially contaminated waters. Arsenic species are readily transformed in nature by slight changes in conditions. Each species has a different toxicity and mobility. The conventional field sampling method using filters of 0.45 μm in size could overestimate the dissolved arsenic concentrations, as passing suspended particles that can act as a sink or source of arsenic depending on the site condition. For arsenic species in neutral pH and iron-poor waters, the precipitation can be stable for up to 3 days without any treatment, but for longer periods, a preservative, such as phosphoric acid, is required. Also, the analytical procedure must be selected carefully because the levels and hydride generation efficiencies of arsenic in different species can vary, even for the same amount of arsenic. For arsenic speciation in samples that also include organic species, a hybrid high-performance liquid chromatography (HPLC) column and inductively coupled plasma mass spectrometry (ICP-MS) gave the best resolution and lowest detection limits. However, the procedure using a solid phase extraction (SPE) cartridge can be used economically and conveniently for analyzing samples containing only inorganic arsenic species, such as groundwater, especially that related to mine activity.
AB - This study was undertaken to ascertain optimal methods of sampling, preserving, separating, and analyzing arsenic species in potentially contaminated waters. Arsenic species are readily transformed in nature by slight changes in conditions. Each species has a different toxicity and mobility. The conventional field sampling method using filters of 0.45 μm in size could overestimate the dissolved arsenic concentrations, as passing suspended particles that can act as a sink or source of arsenic depending on the site condition. For arsenic species in neutral pH and iron-poor waters, the precipitation can be stable for up to 3 days without any treatment, but for longer periods, a preservative, such as phosphoric acid, is required. Also, the analytical procedure must be selected carefully because the levels and hydride generation efficiencies of arsenic in different species can vary, even for the same amount of arsenic. For arsenic speciation in samples that also include organic species, a hybrid high-performance liquid chromatography (HPLC) column and inductively coupled plasma mass spectrometry (ICP-MS) gave the best resolution and lowest detection limits. However, the procedure using a solid phase extraction (SPE) cartridge can be used economically and conveniently for analyzing samples containing only inorganic arsenic species, such as groundwater, especially that related to mine activity.
UR - http://www.scopus.com/inward/record.url?scp=34547221509&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=34547221509&partnerID=8YFLogxK
U2 - 10.1007/s10653-007-9091-3
DO - 10.1007/s10653-007-9091-3
M3 - Article
C2 - 17505895
AN - SCOPUS:34547221509
VL - 29
SP - 337
EP - 346
JO - Environmental Geochemistry and Health
JF - Environmental Geochemistry and Health
SN - 0269-4042
IS - 4
ER -