Sensitive Gas Chromatography Detection of Nanomolar Hydroxylamine in Environmental Water by Fe(III) Oxidation
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- HIKINO Aiko
- Graduate School of Science and Engineering, Shimane University
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- SUGAHARA Shogo
- Graduate School of Science and Engineering, Shimane University
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- KATO Toshikuni
- Shimane Prefectural Institute of Public Health and Environmental Science
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- SENGA Yukiko
- Faculty of Science, Toho University
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- EGAWA Michiko
- Graduate School of Science and Engineering, Shimane University
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- PARK Ja Yeong
- Graduate School of Science and Engineering, Shimane University
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- KAMIYA Hiroshi
- Shimane Prefectural Institute of Public Health and Environmental Science
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- TANAKA Hidekazu
- Graduate School of Science and Engineering, Shimane University
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- SEIKE Yasushi
- Estuary Research Center, Shimane University
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<p>Nanomolar concentrations of NH2OH in natural water sources were determined using an Fe3+ oxidation method. A pH of 2.35 – 2.50 was used, which was adjusted by adding a chloroacetate buffer. Equal amounts (1.0 mL) of the chloroacetate solution and ferric chloride solution were added to the water sample (70 mL) to oxidize NH2OH to N2O. The resulting N2O in the sample water was then quantified by headspace analysis using a gas chromatograph with an electron-capture detector (ECD), where a limit of detection of 0.2 μgN L−1 (14 nmol L−1) was achieved. This method was successfully applied to samples of freshwater, brackish water, and seawater, and despite the various salinities no interfering substances were observed. Furthermore, NH2OH was successfully detected in samples collected from the Hii River and Lakes Shinji and Nakaumi (Shimane Prefecture, Japan). In addition, the proposed method was also applicable to samples rich in organic substance derived from phytoplankton.</p>
収録刊行物
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- Analytical Sciences
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Analytical Sciences 37 (2), 347-351, 2021-02-10
社団法人 日本分析化学会
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詳細情報 詳細情報について
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- CRID
- 1390568617215259776
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- NII論文ID
- 130007983489
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- NII書誌ID
- AA10500785
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- ISSN
- 13482246
- 09106340
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- NDL書誌ID
- 031282042
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- PubMed
- 33012754
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
- PubMed
- CiNii Articles
- KAKEN
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