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Title
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Speciation analysis of organolead compounds in Greenland snow at the femtogram-per-level by capillary gas chromatography-atomic emission spectrometry
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Author
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Abstract
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| A method for comprehensive speciation analysis of organolead compounds in polar snow at levels down to femtograms per gram is developed. The analytes are preconcentrated (250:1) in a single-step extraction, derivatized by propylation using a Grignard reagent, and analyzed by capillary gas chromatography with microwave-induced plasma atomic emission detection (GC-MIP AED) after further on-line preconcentration (50:1). Extraction and derivatization efficiencies of organolead species at subpicogram per gram levels and sources of the blank are extensively discussed. A number of snow samples collected at different locations in Greenland are analyzed, providing the first data on organolead levels in polar snow. Tri- and diethyllead species are the only compounds found in the majority of the samples. |
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Language
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English
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Source (journal)
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Analytical chemistry. - Washington, D.C., 1948, currens
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Publication
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Washington, D.C.
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1993
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ISSN
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0003-2700
[print]
5206-882X
[online]
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DOI
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10.1021/AC00066A019
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Volume/pages
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65
:18
(1993)
, p. 2510-2515
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ISI
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A1993LX16600020
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Full text (Publisher's DOI)
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