Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) HIIRO Kazuo and TANAKA Takashi and KAWAHARA Akinori,Coprecipitation enrichment-spectrophotometic determination of phosphate ion in sea water,BUNSEKI KAGAKU,05251931,The Japan Society for Analytical Chemistry,1977,26,11,739-742,https://cir.nii.ac.jp/crid/1390282679332626816,https://doi.org/10.2116/bunsekikagaku.26.11_739