While analysing the concentrations of major cations and anions in groundwater, volumetric, flame photometer, HPIC and ICP-MS methods are used. How does it affect on the ion balance error calculation because of the different least count, accuracy and precision of each method?
Well,
The accuracy of water analysis are based on the result of the ion equilibrium equation,( less than 5%), which represents the sum of all the errors of the methods of analysis.
Regards
Compare the results if they belong to the same Sample/Population by statistical methods.
In addition, make sure to take the associated uncertainties of every test into your account during results comparison.
In water analysis, different instruments are used. instrument have their standardisation and calibration processes. Final result based on these ionic determination results. Accuracy part is more important, Agreed with Bayan remark.
Number one thing is to ensure that all the relevant precautions are taken into consideration while collecting the samples and while taking readings from machines. Error analysis is highly recommended and if possible two or more similar approaches can be used in order to compare the degree of fidelity in the readings. Readings must be subjected to known reference readings associated with the analysis.
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