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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



Related references

Van Staden J.F., 1986: Indirect determination of sulfate using direct measurement with a lead ion selective 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 adjustor and meth...

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