Trace elements, especially iron, are known to be limiting nutrients of phytoplankton productivity throughout much of the oceans. The GEOTRACES Prime Meridian Transect crossing the northern Pacific during Fall 2018 collected aerosol samples in order to measure the concentrations of aerosol major ions and trace elements. For much of the open ocean, the primary source of iron is aeolian It is hypothesized that acidic conditions encountered during atmospheric transport increase the solubility of iron deposited into the ocean from aerosol particles. If so, it follows that acid-forming atmospheric processes and their associated byproducts (sulfate, nitrate) should be positively correlated with iron solubility. The major ions in GP-15 aerosol samples were analyzed and this hypothesis was tested by comparing those ions to the fractional iron solubility. Major ion-derived proxies were weakly correlated with fractional iron solubility, which suggests other factors drive solubility differences in the remote Pacific’s low dust season.