On-site Catalytic Determination of Trace Manganese in Fresh Water Using Oxidation of Malachite Green with Periodate
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- SHINDO Junpei
- Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi Environmental Technology Center Co., Ltd.
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- KOJIMA Junji
- Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi
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- SUZUKI Yasutada
- Center of Instrumental Analysis, University of Yamanashi
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- KAWAKUBO Susumu
- Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi
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An on-site determination method for trace manganese has been developed using the manganese-catalyzed oxidation of Malachite Green (MG) with potassium periodate. Absorbance measurement of MG was carried out using a laboratory-made palm-top size colorimeter with a red-green-blue light-emitting diode. The reciprocal value (1/τ) of the reaction time at a fixed absorbance value for red light was chosen as a kinetic parameter for simple on-site analyses. The value of 1/τ was proportional to the concentration of manganese in the range of 2 – 20 μg L−1. At a reaction temperature (T) of 20°C or more, manganese was determined within a reaction time of 25 min. The calibration equation was approximated by 1/τ = (aT + b)[Mn] + (cT + d), where a to d were constants in a range of 10 – 40°C. The two equations for 30°C (for the laboratory-preparation of the calibration equation) and T give the value of 1/τ at 30°C as 1/τf = (30a + b)(1/τ – cT – d)/(aT + b) + 30c + d. Without any temperature control, 1/τf can be calculated by this equation and measurements of 1/τ and T. The calculation introduced analytical errors of within 1 μg L−1. The proposed method was successfully applied to tap-, river- and lake-water samples.
収録刊行物
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- Analytical Sciences
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Analytical Sciences 27 (5), 471-, 2011
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
- 1390001204260943872
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- NII論文ID
- 10028288525
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- NII書誌ID
- AA10500785
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- ISSN
- 13482246
- 09106340
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- NDL書誌ID
- 11067852
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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
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- 使用不可