kellybiagi Posted June 9, 2015 Share Posted June 9, 2015 To whom it may concern, This may be a really basic question, but I was wondering how GSS calculates the water type for a sample? In a previous post, it mentions that the water type is based off of the most abundant ions in the sample after speciation. I am just a little confused because I have a sample where the calcium exceeds the sodium (in meq/L) but the sample classifies as Na-SO4 type. I was wondering if I could get some clarification on this? I have attached a GSS spreadsheet with some of the data. Thanks! Kelly GSS_example.gss Quote Link to comment Share on other sites More sharing options...
katezat Posted June 10, 2015 Share Posted June 10, 2015 Hello Kelly, The water type calculation shows the most abundant cation and anion in a sample, based on concentrations in meq/kg fluid. Keep in mind this is referring to the actual aqueous species, calculated after the sample is speciated. To understand this calculation better, try launching SpecE8 for any one or more of your samples. To do so, in GSS >Analysis> Launch....select your sample(s). View the results from SpecE8 to see the most abundant cation and anion (under aqueous species) for your speciated sample. Even though your input meq/L concentration for Ca++ was greater than Na+, the speciation results show Na+ as the predominant free cation. Kind regards, Katelyn Quote Link to comment Share on other sites More sharing options...
kellybiagi Posted June 11, 2015 Author Share Posted June 11, 2015 Hi Katelyn, Thank you so much, that really clears things up! I launched SpecE8 before but didn't really know what to look for. It all makes sense now! Quote Link to comment Share on other sites More sharing options...
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