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- 王 彦剛
- Guangdong Province Environmental Protection Monitoring Center
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- 藍川 昌秀
- Hyogo Prefectural Institute of Public Health and Environmental Sciences
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- 平木 隆年
- Hyogo Prefectural Institute of Public Health and Environmental Sciences
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- 正賀 充
- Air Pollution Control Division, Office of Hyogo Prefecture
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- 玉置 元則
- Hyogo Environmental Advancement Association
書誌事項
- タイトル別名
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- Influence and Interference by Thymol added as a Biocide on the Analysis of Precipitation Samples
説明
Thymol (2-isopropyl-5-methyl phenol) is recommended for the preservation of precipitation samples to suppress the microbial activity and conversion of organic acids unless refrigeration can be used. However, the addition of thymol to precipitation samples influences and interferes with the analysis of samples. The pH value of dilute (10-4M) KCl solution decreased when the amount of thymol added was more than 100 mg/100 ml dilute KCl solution. In contrast, the pH value increased when the amount of thymol added was less than 10 mg /100 ml precipitation sample. The absorbance in the colorimetric method (indophenol blue method for NH4+analysis) was decreased by the addition of thymol. This result was probably caused by the competitive reaction of thymol and phenol through their similar chemical structures. The decrease in the absorbance was dependent on the amount of thymol added. Therefore, the indophenol blue method cannot be recommended for samples to which thymol is added before starting collection because it is impossible to add an appropriate amount of thymol.
収録刊行物
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- 環境技術
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環境技術 35 (4), 295-301, 2006
環境技術学会
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キーワード
詳細情報 詳細情報について
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- CRID
- 1390001204591879040
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- NII論文ID
- 130004174188
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- ISSN
- 18828590
- 03889459
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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
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可
