caa a22 4500 465810969 CHVBK 20180323112116.0 cr unu---uuuuu 170327e19900601xx s 000 0 eng 10.1007/BF02123440 doi (NATIONALLICENCE)springer-10.1007/BF02123440 A simple indirect method for the determination of organic-carbon in marine particles [Elektronische Daten] [Shinichiro Noriki, Chizuru Saito, Shizuo Tsunogai] A simple indirect method for the determination of organic carbon in marine particulate matter is proposed. The recommended procedure is as follows: The dried sample is ashed at 450°C for about 24 hr. The ashed sample is put into a Teflon vessel followed by a mixed solution of nitric acid, perchloric acid and hydrofluoric acid. The vessel is sealed and allowed to stand at 150°C for 5 hr. The concentrations of Si and Al in the digested solution are determined. The organic carbon content (Cal-C, %) is calculated by the following equation: Cal-C=0.52 ([CF]−0.10 [Opal]−0.03 [A-Si]), where [CF] is the combustible fraction (%), [Opal] is the biogenic-SiO2(%), and [A-Si] is the content of aluminosilicate mineral (%). the Oceanographical Society of Japan, 1989 Noriki Shinichiro Department of Chemistry, Faculty of Fisheries, Hokkaido University, 041, Hakodate, Japan aut Saito Chizuru Department of Chemistry, Faculty of Fisheries, Hokkaido University, 041, Hakodate, Japan aut Tsunogai Shizuo Department of Chemistry, Faculty of Fisheries, Hokkaido University, 041, Hakodate, Japan aut Journal of the Oceanographical Society of Japan Kluwer Academic Publishers 46/3(1990-06-01), 135-138 0029-8131 46:3<135 1990 46 10872 https://doi.org/10.1007/BF02123440 text/html Onlinezugriff via DOI 1 brief-communication jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02123440 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Noriki Shinichiro Department of Chemistry, Faculty of Fisheries, Hokkaido University, 041, Hakodate, Japan aut NATIONALLICENCE 700 1- Saito Chizuru Department of Chemistry, Faculty of Fisheries, Hokkaido University, 041, Hakodate, Japan aut NATIONALLICENCE 700 1- Tsunogai Shizuo Department of Chemistry, Faculty of Fisheries, Hokkaido University, 041, Hakodate, Japan aut NATIONALLICENCE 773 0- Journal of the Oceanographical Society of Japan Kluwer Academic Publishers 46/3(1990-06-01), 135-138 0029-8131 46:3<135 1990 46 10872 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer