An analytical flow-injection procedure based on PbS04 colloidal formation is proposed as a turbidimetric determination of sulphate in natural waters. Ethanol-water was used as a medium in order to improve the sensibility of the method. Both chemical and flow variables as well as interfering species
Sulphate preconcentration by anion exchange resin in flow injection and its turbidimetric determination in water
β Scribed by Marina M. Santos Filha; Boaventura F. Reis; Francisco J. Krug; Carol H. Collins; Nivaldo Baccan
- Book ID
- 118996654
- Publisher
- Elsevier Science
- Year
- 1993
- Tongue
- English
- Weight
- 481 KB
- Volume
- 40
- Category
- Article
- ISSN
- 0039-9140
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π SIMILAR VOLUMES
An improved flow injection system with alternating streams of reagents is described for the turbidimetric determination of sulphate. Samples are injected into an inert carrier stream which is mixed with barium chloride to form a barium sulphate suspension. The range of the method can be extended to
Ammonmm eons m natural waters at the 50 pg I-' level were determmed usmg Nessler reagent after preconcentratlon m a cation-exchange column coupled to a flow-inJectIon analysis (FIA) system The loadmg cycle, the elutlon cycle and the regeneration cycle were programmed for the resm used The zone samph