A study of the disproportionation of mercury(I) induced by gas sparging in acidic aqueous solutions for cold-vapor atomic absorption spectrometry
| Autor: | David A. Hildebrand, R.J. Baltisberger, Thomas A. Ballintine, David Grieble |
|---|---|
| Rok vydání: | 1979 |
| Předmět: |
Aqueous solution
Chemistry Inorganic chemistry Analytical chemistry chemistry.chemical_element Disproportionation Solubility equilibrium Biochemistry Chloride Nitrogen Analytical Chemistry Mercury (element) law.invention law medicine Environmental Chemistry Cold vapour atomic fluorescence spectroscopy Atomic absorption spectroscopy Spectroscopy medicine.drug |
| Zdroj: | Analytica Chimica Acta. 111:111-122 |
| ISSN: | 0003-2670 |
| Popis: | Instrumentation and procedures for the cold-vapor atomic absorption determination of mercury have been modified. Samples are analyzed by syringe injection under reducing and non-reducing conditions so as to allow mercury valence state differentiation. It is shown that chloride ion is effective in preventing mercury(I) disproportionation; in the absence of a strong mercury(II) complexing ligand, mercury(I) readily disproportionates when solutions are sparged with nitrogen. The data are consistent with the formation at the 10–500 ppb level of a Hg2Cl2 precipitate with a lower solubility product than the literature values. |
| Databáze: | OpenAIRE |
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