If you search for Alkalinity ...
Published by AGGASIT DAD, Energy and Environmental including CDM and Innovation Project Consultant Freelancer
If you search for Alkalinity of Anaerobic, you will see How to cal ALK and VFA, But ALK as CaCO3 has been used for this formula by using MW of its. For ALk such as M, P ALK in Boiler as well you can fine out easily. But if your are studying for ALK in term of Pure Chem Theory these will be a lots of details. Hopefully these will support your need.