2.2. Ion chromatography
Sodium, magnesium and calcium were determined by ion
chromatography after addition of hydrofluoric acid into seawater.
The seawater solution was diluted a thousand times in
water before analysis. The ion concentrations were measured
with a Dionex DX-100 ion chromatograph. The ion chromatograph
was equipped with a CS12 column and a cation
self-generating suppressor CSRS-I; the eluent being 0.016M
methane sulfonic acid.