inverse modelling multiple processes

[Mercury]

Hi,

First of all, let me explain my question.

I have analyzed the chemical compositions of two water samples (solution 1 and solution 2) that were collected from irrigation canal and drainage canal. The processes of water evolving from solution 1 to solution 2 include evaporation, precipitation, dissolution, and ion exchange. Now, I want to determine the contribution of halite dissolution to the salinization of irrigation return flow water (namely drainage water from farmland).

I choose the inverse model to solve my problem, however, the results showed that the solution fraction (in example 17, the solution fraction means 88-fold concentration) of solution 1 was not consistent with the concentrated multiple that I have obtained by other method. I am wondering how to simulate the other processes (such as halite dissolution, calcite precipitation, cation exchange) under the condition of a fixed evaporation amount.

Look forward to your reply.

Sincerely,
Qiuli.

[dlparkhurst]

Haven't we discussed this before. The inverse modeling gives sets of potential reactions that account for the data that are included. If you have other data, perhaps isotopes, you can try to include them in the inverse modeling, so that the inverse modeling is more comprehensive, or try to rationalize the differences between the other methods and the inverse modeling.