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Contribution of tap water to chlorate and perchlorate intake: A market basket study

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Title: Contribution of tap water to chlorate and perchlorate intake: A market basket study
Authors: Asami, Mari Browse this author
Yoshida, Nobue Browse this author
Kosaka, Koji Browse this author
Ohno, Koichi Browse this author
Matsui, Yoshihiko Browse this author →KAKEN DB
Keywords: Chlorate
Perchlorate
Total diet
Water
Tolerable daily intake
Baby formula
Issue Date: 1-Oct-2013
Publisher: Elsevier science bv
Journal Title: Science of The Total Environment
Volume: 463
Start Page: 199
End Page: 208
Publisher DOI: 10.1016/j.scitotenv.2013.05.097
Abstract: The contributions of water to total levels of chlorate and perchlorate intake were determined using food and water samples from a market basket study from 10 locations in Japan between 2008 and 2009. Foods were categorized into 13 groups and analyzed along with tap water. The average total chlorate intake was 333 (min. 193-max. 486) mu g/day for samples cooked with tap water. The contribution of tap water to total chlorate intake was as high as 47%-58%, although total chlorate intake was less than 32% of the tolerable daily intake, 1500 mu g/day for body weight of 50 kg. For perchlorate, daily intake from water was 0.7 (0.1-4.4) mu g/day, which is not high compared to the average total intake of 14 (2.5-84) mu g/day, while the reference dose (RfD) is 35 mu g/day and the provisional maximum tolerable daily intake (PMTDI) is 500 mu g/day for body weight of 50 kg. The highest intake of perchlorate was 84 mu g/day, where concentrations in foods were high, but not in water. The contribution of water to total perchlorate intake ranged from 0.5% to 22%, while the ratio of highest daily intake to RfD was 240% and that to PMTDI was 17%. Eight baby formulas were also tested - total chlorate and perchlorate intakes were 147 (42-332) mu g/day and 1.11 (0.05-4.5) mu g/day, respectively, for an ingestion volume of 1 L/day if prepared with tap water. (C) 2013 The Authors. Published by Elsevier B.V. All rights reserved.
Rights: http://creativecommons.org/licenses/by-nc-nd/3.0/
Type: article
URI: http://hdl.handle.net/2115/53692
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)

Submitter: 松井 佳彦

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