2006 Fiscal Year Final Research Report Summary
Distribution of natural and synthetic estrogens and some factors in aquatic environments of dairy area
| Project/Area Number |
17550068
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Analytical chemistry
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| Research Institution | HOKKAIDO UNIVERSITY |
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Principal Investigator |
TANAKA Shunitz Hokkaido Univ., Faculty of Environmental Earth Science, Professor, 大学院地球環境科学研究院, 教授 (30142194)
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| Project Period (FY) |
2005 – 2006
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| Keywords | 17 β-estradiol / estrogens / dairy area / ELISA / Nishibetsu river |
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| Research Abstract |
The aims of this study are to investigate the distribution of natural and synthetic estrogens and some effecting factors on the toxicy in aquatic environments of dairy area. Therefore, (1) the development of sensitive and selective analytical methods for estrogens, (2) the investigation of pollution with estrogens in river water of dairy and urban area, and (3) the development of removal methods for estrogens in water, were studied and the following results were obtained.
(1)An ELISA method detecting 17 β-estradiol sensitively and selectively was developed by using biotinylated estradiol as a probe ligand, which can combine immuno-reaction of antigen and antibody with avidine-biotin technologies. An electrochemical detecting method was also established with the modified electrode with carbon nano-tube. Moreover, the possibility of detecting DES, one of synthetic estrogens was shown by a competition reaction of DES with an electroactive groove binder at the binding sites of photo-immobilized DNA on the electrode.
(2)The distribution of estrogens in water of Nishibetsu river, which flows in dairy area around Bekkai city in northern area of Hokkaido Prefecture, was investigated by the ELISA methods for 17 βestrodiol and total estrogens. The presence of pico molar level of estrogens in all sampling points of this river was found out. Since the values of total estrogens and 17 β -estrodiol concentration are close, it is thought that most of estorgens is estradiol.
(3)The removal methods for some harmful organic compounds were developed by carbon fiber electrode, where estradiol and aniline were oxidized and adhered electrochemically, and alginate gel beads containing activated carbon.
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Research Products
(15 results)
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[Book] 環境修復の科学と技術2007
Author(s)
田中俊逸(北海道大学大学院環境科学院編)
Total Pages
256
Publisher
北海道大学出版会
Description
「研究成果報告書概要(和文)」より
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[Book] 水の分析 弟5版2005
Author(s)
田中俊逸(日本分析化学会北海道支部編)
Total Pages
472
Publisher
化学同人
Description
「研究成果報告書概要(和文)」より
