The rapid sub-picogram determination of volatile organo-mercury compounds by gas chromatography with a microwave emission spectrometric detector system
| Autor: | Yair Talmi |
|---|---|
| Rok vydání: | 1975 |
| Předmět: |
Chromatography
Gas Trace Amounts chemistry.chemical_element Food Contamination Biochemistry Analytical Chemistry chemistry.chemical_compound Methods Organometallic Compounds Environmental Chemistry Water Pollutants Benzene Methylmercury Spectroscopy Detection limit Air Pollutants Aqueous solution Chromatography Tissue Extracts Chemistry Microchemistry Spectrum Analysis Detector Mercury Mercury (element) Environmental Pollutants Gas chromatography |
| Zdroj: | Analytica Chimica Acta. 74:107-117 |
| ISSN: | 0003-2670 |
| DOI: | 10.1016/s0003-2670(01)82784-7 |
| Popis: | The applicability of a gas Chromatograph with a microwave emission spcctrometric detector (g.c.-m.e.s.) to the determination of trace amounts of volatile organo-mercury compounds in environmental samples is described. The high selectivity of the detector to mercury compounds allows the procedures to be drastically simplified. Thus, the total analysis time for methylmercury in fish is less than 15 min and more than 30 samples of CH 3 HgCl (benzene extracts) can be analyzed per hour. The detection limit is 0.5 pg for CH 3 HgCl (or C 2 H 5 HgCl) and 2 pg for (CH 3 ) 2 Hg. The relative sensitivity for CH 3 HgCl in water samples is 1 ng l −1 and for fish samples is 1 ng g −1 . Direct determinations of CH 3 HgCl and (CH 3 ) 2 Hg in aqueous solutions arc also discussed. |
| Databáze: | OpenAIRE |
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