It's well accepted that chloride is a conservative tracer in geochemical systems. However, in highly weathered soils the abundance of amphoteric colloids, i.e., bearing variable surface net charge depending on soil solution parameters as ionic strength, pH, Eh, temperature, etc (e.g. hydroxi-oxides of Fe, AL, Mg, Tn; SOM; kaolinite; etc), results in positively charged adsorption sites and relatively high anionic exchange capacities. Wouldn't it be relevant for the biogeochemistry of chloride such systems, as is the case of most of tropical landscapes?
Please see the attached link
https://www.google.it/url?sa=t&source=web&rct=j&url=http://citeseerx.ist.psu.edu/viewdoc/download%3Fdoi%3D10.1.1.588.7208%26rep%3Drep1%26type%3Dpdf&ved=0ahUKEwiV-Y6Umc_SAhVEF8AKHYv_DR8QFggfMAA&usg=AFQjCNFH24imNIBXnMinT9DUlPCtsenYBg
All the best
Dear Yadav, thanks for the text. It really confirms my understanding of the process. Obs.: I'm no Dr. yet ;)
Dear Dr. Hassaan, thanks for the chapter. It is really informative. It also points out another aspect of chlorine in soils that I was assuming irrelevant: the importance of the organic chlorine pool to the presence of this element in underground water.
I also found Dr Hassaan's link to Cl biogeochemical cycling very informative also. Thank you.
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