Here's why:
* Major Constituents: Seawater is primarily composed of inorganic salts, with sodium chloride (NaCl) being the most abundant. Other major components include magnesium, sulfate, calcium, potassium, and bromide.
* Organic Matter: Organic matter in seawater includes dissolved organic compounds (DOC) from decaying organisms, and living organisms like plankton. These are generally considered separate from minor organic salts.
* Trace Amounts: While some organic salts may exist, their concentrations are extremely low compared to the major inorganic salts.
Therefore, focusing on the percentage of minor organic salts in seawater isn't a common focus in oceanographic research. Instead, the focus is typically on the major inorganic salt components and their contributions to the overall salinity of seawater.
