Rapid pK measurements for multibasic weak acids by gradient flow injection titration
✍ Scribed by David R. Turner; Margarida M. Correia dos Santos; Paulo Coutinho; Maria de Lurdes Gonçalves; Susan Knox
- Publisher
- Elsevier Science
- Year
- 1992
- Tongue
- English
- Weight
- 666 KB
- Volume
- 258
- Category
- Article
- ISSN
- 0003-2670
No coin nor oath required. For personal study only.
✦ Synopsis
pK values of phthahc acid, phosphonc acid and EDTA (pK,, pK, and pK, only) have been determmed by rapid gradient flow mJectlon tltratlon Key factors m expenmental design have been mvestlgated, vtz pH range of the tltratlon, duectlon of tltratlon, flow-rate and weak acid concentration Under optimum conditions the technique LS well sulted to the determmatlon of pK values wth a precision of 0 01-O 05 pK and m good agreement with hterature values It 1s less well suited than conventional batch titration to the determmatlon of very low or high pK values at low weak acid concentrations