Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Minamisawa Hiroaki and Mizushima Kento and Asamoto Hiromichi and Minamisawa Mayumi and Saitoh Kazunori and Nakagama Tatsuro,Solid-Phase Extraction of Chromium(VI) by Polyurethane Foam Treated with Hydrochloric Acid,BUNSEKI KAGAKU,05251931,The Japan Society for Analytical Chemistry,2010,59,12,1163-1167,https://cir.nii.ac.jp/crid/1390001204354212864,https://doi.org/10.2116/bunsekikagaku.59.1163