Spectrophotometric determination of calcium with 8—quinolinol
✍ Scribed by C.L. Luke
- Publisher
- Elsevier Science
- Year
- 1965
- Tongue
- English
- Weight
- 458 KB
- Volume
- 32
- Category
- Article
- ISSN
- 0003-2670
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📜 SIMILAR VOLUMES
The indirect spectrophotometric determination of 0.8-7.2 ppm calcium in the presence of magnesium, phosphate and sulphate by flow injection analysis (f.i.a.) is described. The method is based on the exchange reaction between the calcium and the zinc complex of ethylene glycol-bis(2aminoethylether)te
Standard calciwx solution, 80.0 pg/nzl. Dissolve 0.1998 g of pure calcium carbonate in a slight cxccss of hydrochloric acid and dilute to I 1.
The characteristics of the ternary complexes formed by fluoride, bromide, iodide and thiocyanate with tin(IV) and 5,7-dichloro-8-quinolinol (HCQ) have been studied. A spectrophotometric method is proposed for the determination of tin(IV) (l-20 pg ml-'), based on the extraction into chloroform of the