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A field survey on elution of lead and nickel from taps used in homes and analysis of product test results
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| Title: | A field survey on elution of lead and nickel from taps used in homes and analysis of product test results |
| Authors: | Asami, Mari Browse this author →KAKEN DB | | Furuhashi, Yoshikazu Browse this author | | Nakamura, Yuji Browse this author | | Sasaki, Yuki Browse this author | | Adachi, Yoshio Browse this author | | Maeda, Nobuko Browse this author | | Matsui, Yoshihiko Browse this author →KAKEN DB |
| Keywords: | first flush | | elution | | home water supply device | | inorganic chemical |
| Issue Date: | 1-Jun-2021 |
| Publisher: | Elsevier |
| Journal Title: | Science of The Total Environment |
| Volume: | 771 |
| Start Page: | 144979 |
| Publisher DOI: | 10.1016/j.scitotenv.2021.144979 |
| Abstract: | The elution of lead, and nickel from water supply devices into water is a potential health concern. This study was performed to examine the actual concentrations of nickel and lead in the water from taps in homes and offices, focusing on the differences between first flush and fully flushed water. The water quality management target value and water quality standard in Japan specify nickel and lead concentrations in drinking water < 20 and < 10 μg/L, respectively. Nickel concentration in the first flush water (100 mL) from 110 household taps revealed 22 cases (20%) > 20 μg/L, while the fully flushed water satisfied the standard after running 5000 mL of water. The nickel concentration decreased gradually in sequential sampling of each 100 mL from the taps. Lead concentration in the first flush water exceeded the standard in 32 cases (29%), while the fully flushed water was below the target value. The concentration in the first flush water tended to decrease with time since the tap installation, and this was significant after 10 years for nickel but not significant for lead. It is important to flush retained water out of the tap after several hours without use. No significant correlation was found with the volume of the test faucet in the market, but bronze-based products showed higher nickel concentrations than brass and plastic products. |
| Rights: | © 2021. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/ | | https://creativecommons.org/licenses/by-nc-nd/4.0/ |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/89361 |
| Appears in Collections: | 工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 松井 佳彦
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