The behaviour of different organometallic compounds in the presence of inorganic mercury(II): transalkylation of mercury species and their analysis by the GC–MIP–PED system
✍ Scribed by B. Rosenkranz; J. Bettmer; W. Buscher; C. Breer; K. Cammann
- Publisher
- John Wiley and Sons
- Year
- 1997
- Tongue
- English
- Weight
- 144 KB
- Volume
- 11
- Category
- Article
- ISSN
- 0268-2605
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✦ Synopsis
It is shown that four different mercury species are formed by the abiotic reaction of inorganic mercury with different, ecologically relevant, organolead and organoarsenic compounds. Therefore solutions of tetraethyl-lead, trimethyl-lead chloride and dimethylarsonic acid were prepared and mixed with stock solutions of inorganic mercury at different concentrations. The final solutions were analyzed for their content of newly synthesized mercury species. The analysis was carried out by using a system of solid-phase microextraction (SPME): capillary gas chromatography (GC), microwave-induced plasma (MIP) and a plasma-emission detector (PED). We found that transfer of one or two alkyl groups to the inorganic mercury is possible under the conditions mentioned below. The transalkylation rate depends on the kind of organometallic compound and on the pH. The results were confirmed by the reaction with inorganic mercury and analysis of a soil sample, containing tetraethyl-lead and trimethyl-lead, in which not only the monoalkyl compound, but also the dialkylated compound of the relevant inorganic metal, were found.