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| Content Provider | Royal Society of Chemistry (RSC) |
|---|---|
| Author | Lord, Gillian Kim, Nick Ward, Neil I. |
| Copyright Year | 2012 |
| Abstract | Total arsenic and four arsenic species; arsenite (iAsIII), arsenate (iAsV), dimethylarsinic acid (DMAV) and monomethylarsonic acid (MAV), are reported in 28 geothermal features from the Taupo Volcanic Zone (TVZ) and Waikato region of New Zealand. Samples were collected for arsenic speciation analysis via a solid phase extraction (SPE) kit allowing the separation, stabilisation and pre-concentration of the species at the time of sample collection in the field. This is the first research to present data for arsenic species collected by this technique in geothermal waters from New Zealand. Total arsenic concentrations, determined by inductively coupled plasma mass spectrometry (ICP-MS), ranged from 0.008 to 9.08 mg l−1 As. The highest levels were discovered in three features in Tokaanu (Taumatapuhipuhi, Takarea #5 and #6), with arsenic concentrations of 8.59, 8.70 and 9.08 mg l−1 As, respectively. Inorganic arsenic species were predominant in the geothermal waters, with arsenite contributing to more than 70% of the total arsenic in the majority of samples. Organic species were also determined in all samples, indicating the presence of microbial activity. A potential risk to human health was highlighted due to the high levels of arsenic, mainly as arsenite, in geothermal features linked to bathing pools. Further research is needed into dermal absorption as a potential route of arsenic exposure whilst bathing in these hot pools, as it may contribute to an occurrence of acute arsenic-related health problems. |
| Starting Page | 3192 |
| Ending Page | 3201 |
| Page Count | 10 |
| File Format | HTM / HTML PDF |
| ISSN | 14640325 |
| Volume Number | 14 |
| Issue Number | 12 |
| Journal | Journal of Environmental Monitoring |
| DOI | 10.1039/c2em30486d |
| Language | English |
| Publisher | Royal Society of Chemistry |
| Access Restriction | Open |
| Subject Keyword | TVZ Taupo Volcanic Zone Waikato New Zealand Tokaanu Takarea Arsenic Arsenite Arsenate Acid Geothermal gradient Waikato River Speciation Solid phase extraction Inductively coupled plasma mass spectrometry |
| Content Type | Text |
| Resource Type | Article |
| Subject | Public Health, Environmental and Occupational Health Management, Monitoring, Policy and Law |
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