Speciation analysis of organolead compounds in Greenland snow at the femtogram-per-level by capillary gas chromatography-atomic emission spectrometry

Abstract: 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...

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Bibliographic Details
Published in:Analytical Chemistry
Main Authors: Łobinski, Ryszard, Boutron, Claude F., Candelone, Jean-Pierre, Hong, Sungmin, Szpunar-Łobinska, Joanna, Adams, Freddy
Format: Article in Journal/Newspaper
Language:English
Published: 1993
Subjects:
Chemistry
Greenland
Online Access:https://hdl.handle.net/10067/61010151162165141
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Summary:Abstract: 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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