http://www.indianchemsoc.org/journals/nov13.pdf, J. Indian Chem. Soc., Vol. 90, November 2013, pp. 2029-2033 ,Chemical analysis of limestone and dolomite using capillary electrophoresis.
The cheapest, easiest and reliable analytical protocol is ICP-OES or AAS. These methodologies depend on the preparation of operational standards and the inclusion of replicates, internal standards and quality assurance international standards for validation purposes. High throughput is one aspect which makes these protocols very efficient indeed, since the methods can be automated and carried out overnight while one is asleep, with the results being presented early the next day.