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Author Topic: user _graph help!  (Read 728 times)

tianshiyu

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  • Posts: 7
user _graph help!
« on: October 25, 2019, 05:23:07 AM »
I now use phreeqc to simulate the change of free ammonia in ammonia buffer solution with pH. I tried to draw the relationship between AmmH+ and pH with GRAPH_X -la("H+")/GRAPH_Y tot("AmmH+")*15, but it didn't work. What should I do?
Thank you very much for your help!
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dlparkhurst

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Re: user _graph help!
« Reply #1 on: October 25, 2019, 02:42:45 PM »
Basic functions are described in the manual. TOT("Amm") will give the total amount of Amm, including all aqueous species, in mol/kgw.
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