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Indirect determination of sulphate by direct measurement using a lead ionselective electrode


Water SA 12(4): 225-228
Indirect determination of sulphate by direct measurement using a lead ionselective electrode
A manual procedure for the indirect determination of sulphate by direct measurement with a lead ionselective electrode is described. An excess of lead(II)ions is added to the sample solution containing sodium perchlorate as ionic strength adjustor and methanol-formaldehyde to decrease the solubility and retard oxidation of the membrane. The system is useful for routine sulphate analysis in the range 20 to 200 mg.dm-3 with a reproducibility of +or- 5%.


Accession: 001615679



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