Investigation of the species-specific degradation behaviour of methylmercury and ethylmercury under microwave irradiation

Abranko, L [Abrankó, László (Élelmiszertudomány), author] Department of Applied Chemistry (CUB / FFS); Jokai, Z [Jókainé Szatura, Zsuzsa (Higanyspeciáció, ...), author] Department of Applied Chemistry (CUB / FFS); Fodor, P [Fodor, Péter (Analitikai kémia), author] Department of Applied Chemistry (CUB / FFS)

English Scientific Article (Journal Article)
  • SJR Scopus - Analytical Chemistry: Q2
    The degradation behaviour of methylmercury (MeHg) under microwave irradiation is investigated, as is the (different) degradation behaviour of ethylmercury (EtHg) under similar irradiation. A simple and highly sensitive SPME-GC-pyrolysis-AFS system was used to analyse the aqueous MeHg and EtHg standard solutions after derivatization with sodium tetraphenylborate (NaBPh4). Samples were irradiated in a microwave digester at microwave powers ranging from 20 to 160 W for durations of 2 to 10 min. The different tolerances towards microwave treatment of the two organomercury species were evident. Practically no degradation was experienced for MeHg for up to 8 minutes of irradiation at 120 W or for up to 4 minutes at 160 W. Significant analyte loss was observed for EtHg after 2 minutes at 40 W of microwave power.
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    2021-02-26 20:19