Significant figures for Iphreeqc

[dlee05291]

Hi all,

I'm doing reactive transport simulation using Iphreeqc and Comsol. I have a problem regarding significant figures. I believe that the Iphreeqc method 'AccumulateLine' has five significant figures, but that causes a high deviation in pH calculation in my case. Is there any way to increase the number of significant figures for Iphreeqc module?

Thanks,
Dooyoul Lee

[dlparkhurst]

AccumulateLine accepts a string. When the string is processed, all available digits will be used to interpret a numeric value.

Perhaps you are formulating the string for AccumulateLine with limited precision, and you need to you write the line with more precision.

[dlee05291]

Yes, you are right. It was not a problem of Iphreeqc. I'm using MATLAB function 'num2str' which can set precision. Thanks for your reply!