Experiences with the analytical procedures for the determination of methylmercury in environmental samples

Autor:	Ying-Hua Lee, Åke Iverfeldt, John Munthe
Rok vydání:	1994
Předmět:	Aqueous solution Chromatography Chemistry General Chemistry Chloride law.invention Inorganic Chemistry chemistry.chemical_compound law Reagent medicine Analytical procedures Gas chromatography Derivatization Distillation Methylmercury medicine.drug
Zdroj:	Applied Organometallic Chemistry. 8:659-664
ISSN:	1099-0739 0268-2605
DOI:	10.1002/aoc.590080717
Popis:	The analytical method using ethylation, gas chromatography–cold vapor atomic fluorescence spectroscopy (GC–CV AFS), combined with different pretreatment procedures, has been used for the determination of methylmercury (MeHg) in various aqueous and solid environmental samples. Different types of samples with varying matrices and MeHg concentration levels require different pretreatment procedures in order to isolate/separate MeHg from the sample matrix, and to overcome interferences in the ethylation reaction process. Limitations of different pretreatment procedures (solvent extraction into methylene chloride, distillation under nitrogen flow and alkaline digestion) are discussed and recommendations are given. The influence of the quality of the ethylating reagent on the analytical results is also examined.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::48bdf3936c4f6987991f5291143132a1 https://doi.org/10.1002/aoc.590080717 Zobrazit plný text záznamu Plný text