Standard mean chemical composition of sea water (S=35).

Data source:

Doe (1994) Handbook of methods for the analysis of the various parameters of the carbon dioxide system in sea water; version 2, A. G. Dickson & C. Goyet, eds., ORNL/CDIAC-74.
https://cdiac.ess-dive.lbl.gov/ftp/cdiac74/chapter5.pdf

Original Chart: https://vizhub.com/curran/a44b38541b6e47a4afdd2dfe67a302c5