Determination of Solubility of Sodium Salts in Aqueous Surfactant and STPP Solutions Using an Ion Selective Electrode
| Autor: | Ya-Na Zhang, Xin Wang, Yang-Xin Yu |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Supersaturation
Aqueous solution Electromotive force Chemistry General Chemical Engineering Sodium Potentiometric titration Inorganic chemistry chemistry.chemical_element 02 engineering and technology General Chemistry 021001 nanoscience & nanotechnology Ion selective electrode 020401 chemical engineering Pulmonary surfactant 0204 chemical engineering Solubility 0210 nano-technology |
| Zdroj: | Journal of Chemical & Engineering Data. 61:2236-2243 |
| ISSN: | 1520-5134 0021-9568 |
| DOI: | 10.1021/acs.jced.5b00926 |
| Popis: | Solubility of inorganic salts in the mixed systems containing surfactants and sodium tripolyphosphate (STPP) is very important for the production of laundry detergents. In this work we explored the solubility of NaCl, Na2SO4, and Na2CO3 in aqueous surfactant and STPP solutions using an ion selective electrode at 298.15 K. In the experiments, electromotive forces (EMF) for the ternary systems were measured using an ion-meter with a sodium ion-selective composite electrode and the relationship between the solubility and EMF was analyzed by a potentiometric analysis. The proposed method has advantages in avoiding the solid–liquid separation operation and solution supersaturation. The experimental results indicated that the salting-out effect caused by surfactant and STPP can decrease the solubility of sodium salts in the aqueous systems. |
| Databáze: | OpenAIRE |
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