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Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Veterinary Medicine / Faculty of Veterinary Medicine >
Peer-reviewed Journal Articles, etc >
Monitoring Lead (Pb) Pollution and Identifying Pb Pollution Sources in Japan Using Stable Pb Isotope Analysis with Kidneys of Wild Rats
This item is licensed under:Creative Commons Attribution 4.0 International
| Title: | Monitoring Lead (Pb) Pollution and Identifying Pb Pollution Sources in Japan Using Stable Pb Isotope Analysis with Kidneys of Wild Rats |
| Authors: | Nakata, Hokuto Browse this author | | Nakayama, Shouta M. M. Browse this author →KAKEN DB | | Oroszlany, Balazs Browse this author | | Ikenaka, Yoshinori Browse this author →KAKEN DB | | Mizukawa, Hazuki Browse this author →KAKEN DB | | Tanaka, Kazuyuki Browse this author | | Harunari, Tsunehito Browse this author | | Tanikawa, Tsutomu Browse this author | | Darwish, Wageh Sobhy Browse this author | | Yohannes, Yared B. Browse this author | | Saengtienchai, Aksorn Browse this author | | Ishizuka, Mayumi Browse this author →KAKEN DB |
| Keywords: | metal contamination | | wild rodent | | stable Pb isotope | | source identification | | developed country |
| Issue Date: | 10-Jan-2017 |
| Publisher: | MDPI |
| Journal Title: | International Journal of Environmental Research and Public Health |
| Volume: | 14 |
| Issue: | 1 |
| Start Page: | 56 |
| Publisher DOI: | 10.3390/ijerph14010056 |
| Abstract: | Although Japan has been considered to have little lead (Pb) pollution in modern times, the actual pollution situation is unclear. The present study aims to investigate the extent of Pb pollution and to identify the pollution sources in Japan using stable Pb isotope analysis with kidneys of wild rats. Wild brown (Rattus norvegicus, n = 43) and black (R. rattus, n = 98) rats were trapped from various sites in Japan. Mean Pb concentrations in the kidneys of rats from Okinawa (15.58 mg/kg, dry weight), Aichi (10.83), Niigata (10.62), Fukuoka (8.09), Ibaraki (5.06), Kyoto (4.58), Osaka (4.57), Kanagawa (3.42), and Tokyo (3.40) were above the threshold (2.50) for histological kidney changes. Similarly, compared with the previous report, it was regarded that even structural and functional kidney damage as well as neurotoxicity have spread among rats in Japan. Additionally, the possibility of human exposure to a high level of Pb was assumed. In regard to stable Pb isotope analysis, distinctive values of stable Pb isotope ratios (Pb-IRs) were detected in some kidney samples with Pb levels above 5.0 mg/kg. This result indicated that composite factors are involved in Pb pollution. However, the identification of a concrete pollution source has not been accomplished due to limited differences among previously reported values of Pb isotope composition in circulating Pb products. Namely, the current study established the limit of Pb isotope analysis for source identification. Further detailed research about monitoring Pb pollution in Japan and the demonstration of a novel method to identify Pb sources are needed. |
| Rights: | https://creativecommons.org/licenses/by/4.0/ |
| Type: | article |
| URI: | http://hdl.handle.net/2115/64804 |
| Appears in Collections: | 獣医学院・獣医学研究院 (Graduate School of Veterinary Medicine / Faculty of Veterinary Medicine) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 石塚 真由美
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