Interference of organic material with chelating resin preconcentration of trace copper in environmental water and its elimination by photochemical decomposition.
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- ITOH Jun-ichi
- Department of Environmental Engineering, Kitami Institute of Technology
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- KOMATA Masashi
- Department of Environmental Engineering, Kitami Institute of Technology
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- OKA Hiroshi
- Department of Environmental Engineering, Kitami Institute of Technology
Bibliographic Information
- Other Title
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- 環境水中の微量銅(II)のキレート樹脂濃縮における共存有機物の妨害とその紫外線照射分解法
- カンキョウスイチュウ ノ ビリョウ ドウ 2 ノ キレート ジュシ ノウシュク
- 環境水中の微量銅(11)のキレート樹脂濃縮における共存有機物の妨害とその紫外線照射分解法(<特集>超微量分析のための前処理と予備濃縮)
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Abstract
Photochemical decomposition and acid digestion followed by concentration of copper with Chelex 100 chelating resin were studied. Standard 6.13 ppb copper samples containing 4 ppm of humic acid or EDTA adjusted at pH 8 were used for digestion and recovery test. Huminc acid or EDTA in the sample was completely decomposed by UV irradiation for over 20 min at pH 1 and copper was quantitatively recovered. On the other hand, the acid digestion by boiling for 3 h at pH 1 gave 90% and 0% of the recovery of copper from humic acid solution and EDTA solution, respectively. When the humic acid solution was not treated, the recovery was 14.5%. The recommended procedure was as follows. Sample (400 ml) adjusted at pH 1 with 1 M nitric acid was photo-oxidized by UV irradiation for 30 min. Copper was concentrated on chelating resin (Chelex 100) at pH 5 and eluted with 10 ml of 1 M nitric acid. Copper in the effluent was determined by spectrophotometry with tetrakis (4-N-trimethylaminophenyl) porphine. The relative standerd deviation for the standerd sample was 3.65% (n=7). The present method was applied to the determination of copper in the seawater.
Journal
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- BUNSEKI KAGAKU
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BUNSEKI KAGAKU 36 (11), 799-801, 1987
The Japan Society for Analytical Chemistry
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Details 詳細情報について
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- CRID
- 1390001204051501440
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- NII Article ID
- 110002909521
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- NII Book ID
- AN00222633
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- COI
- 1:CAS:528:DyaL1cXis1OgtQ%3D%3D
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- NDL BIB ID
- 3156088
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- ISSN
- 05251931
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- NDL-Digital
- CiNii Articles
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- Abstract License Flag
- Disallowed