上游究通大学 海水组成(Constituents of Seawater) SHANGHAI JIAO TONG UNIVERSITY 11种主要无机盐，占99.99%。 溶解成分的含量（溶度）>1毫克/千克 Table5.1 Major Constituents of Seawater Constituent Symbol g/kg in seawater! Percentage by weight chloride cr 19.35 55.07 sodium Na 10.76 30.62) sulfate s02 271 7.72 magnesium Mg2+ 1.29 3.68 99.36 calcium Ca2 0.41 1.17 potassium K 0.39 1.10 bicarbonate HCO, 0.14 0.40 bromide Br 0.067 0.19 strontium Sr2 0.008 0.02 boron B 0.004 0.01 fluoride F 0.001 0.01 total 99.99 From Riley and Skirrow,Chemical Oceanograply,Vol.1.2d ed.Copyright 1975 Academic Press,Orlando,Florida.Reprinted by permission.海水组成(Constituents of Seawater) 11种主要无机盐，占99.99%。 溶解成分的含量(溶度)>1毫克/千克