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Eluate samples were collected at liquid-to-solid ratio of 0.1, 0.2, 0.5, 1, 2, 5 and 10 L/kg and analyzed for quantification of the target elements (Cu, As, Se, Cl, Ca, F, Mg, DOC and B in this research). This procedure consists of percolating solution (calcium chloride 1 mM) from bottom to top at a flow rate of 12 mL/h through softly compacted soil contained in a column of 5 cm diameter and 30 ± 5 cm height. Up-flow column percolation tests were performed following the procedure described in the ISO/TS 21268–3.
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We tested three different sandy loam type soils ( Soils I, II and III) to determine the reproducibility (variability inter laboratory) of test results and to evaluate the difference in the test results within laboratory.
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Monitoring the quality of these test results inter or within laboratory is crucial, especially if used for Environment-related legal policy or for routine testing purposes. Up-flow column percolation tests are used at laboratory scale to assess the leaching behavior of hazardous substance from contaminated soils in a specific condition as a function of time. Naka, Angelica Sakanakura, Hirofumi Kurosawa, Akihiko Inui, Toru Takeo, Miyuki Inoba, Seiji Watanabe, Yasutaka Fujikawa, Takuro Miura, Toshihiko Miyaguchi, Shinji Nakajou, Kunihide Sumikura, Mitsuhiro Ito, Kenichi Tamoto, Shuichi Tatsuhara, Takeshi Chida, Tomoyuki Hirata, Kei Ohori, Ken Someya, Masayuki Katoh, Masahiko Umino, Madoka Negishi, Masanori Ito, Keijiro Kojima, Junichi Ogawa, Shohei Reproducibility of up-flow column percolation tests for contaminated soils