Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) MURAI Keita and HONDA Hiroko and OKAUCHI Shuntaro,Visual Colorimetric Determination of Sulfate Ion in Water Using Coprecipitation Phenomenon of Potassium Permanganate and Barium Sulfate,BUNSEKI KAGAKU,05251931,The Japan Society for Analytical Chemistry,2020-06-05,69,6,311-316,https://cir.nii.ac.jp/crid/1390566775152940288,https://doi.org/10.2116/bunsekikagaku.69.311