Table 1.

SALT-1 major components. Ion chromatography with conductivity detection (Cl⁻, Br⁻, SO₄²⁻) and ICP−OES (B, Ca, K, Mg, S, Sr, Na): SALT-1 vs other seawaters

Ratio	Cl−	Br−	SO42−	B	Ca	K	Mg	S	Sr	Na
SALT-1 vs Atlantic seawater	1.18	1.44	0.97	0.21	1.31	1.42	1.22	0.98	1.37	1.14
SALT-1 vs low-nutrient seawater	0.96	0.95	0.78	0.17	1.09	1.16	1.01	0.81	1.14	0.92

First line: ratio between the absolute signals obtained on 4.0% w/w SALT-1 solution and the one from costal Atlantic seawater sampled in Halifax on 2017-02-23. Second line: ratio between the absolute signals obtained on 4.0% w/w SALT-1 solution and low-nutrient seawater (LNSW). Before analysis, the samples were diluted 1:50 (1:100 for the analysis of sodium by ICP−OES) and injected (Paragraphs S1.6 and S1.7)