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. 2013 Jun 21;8(6):e66681. doi: 10.1371/journal.pone.0066681

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© 2013 Kato et al

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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Well water samples (n = 5) from Ha Nam, Vietnam with barium (range: 412.8–879.6 µg/L) and arsenic (range: 7.4–63.2 µg/L) were prepared. After 1% weight of MF-HT had been suspended in the well water samples, the MF-HT-suspended solutions were shaken at 300 rpm for 1 min. After the solutions had been centrifuged, barium (a and b) and arsenic (c and d) concentrations in the MF-HT-treated supernatants (MF-HT) were compared with those in untreated control water samples (Ctrl). * and **, Statistically different (*, p<0.05; **, p<0.01) from the control by the Mann-Whitney U test.