Fluoride determination with a micro flow-calorimeter |
| |
Authors: | Johansson C |
| |
Institution: | Department of Analytical Chemistry, Chemical Center, University of Lund, Lund, Sweden. |
| |
Abstract: | Fluoride is determined by an integration technique with a flow calorimeter. All samples are absorbed on an anion-exchange resin before being brought into the calorimetric system. The reaction between hydrofluoric add and sodium hydroxide is used in the determinations. The method is applied to samples with between 7 mug and 5 mg of fluoride. The confidence limit is +/-2-5 mug for small samples and +/-25 mug for large samples. The enthalpy of the reaction H(+) + F(-) --> HF((aq)) was found to be 13.77 +/- 0.08 kJ mole . |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|