EVALUATION OF MONOLITHIC COLUMN FOR INORGANIC MERCURY AND METHYLMERCURY DETERMINATION IN FISH SAMPLE ANALYSIS

Bravo, Manuel A.; Riquelme, Ornella; Parra, Sonnia; Bergmann, Jan; Quiroz, Waldo

dc.creator	Bravo, Manuel A.
dc.creator	Riquelme, Ornella
dc.creator	Parra, Sonnia
dc.creator	Bergmann, Jan
dc.creator	Quiroz, Waldo
dc.date	2019-01-09
dc.date.accessioned	2019-11-13T15:11:50Z
dc.date.available	2019-11-13T15:11:50Z
dc.identifier	http://www.jcchems.com/index.php/JCCHEMS/article/view/924
dc.identifier.uri	https://revistaschilenas.uchile.cl/handle/2250/112730
dc.description	In the present work, the applicability of a monolithic column was evaluated for mercury speciation analysis in certified and real fish samples. The influence of the flow and composition of the mobile phase (2-mercaptoethanol concentration and methanol content) on the retention times of iHg and MeHg was evaluated. The optimal separation conditions were achieved for a mobile phase containing 5 % methanol and 0.02 % mercaptoethanol in acetate buffer (pH 5.0) at a flow rate of 1.6 ml min-1. Different extraction conditions were studied to analyze a certified reference material with the optimized methodology and the best results (93 % recovery) were obtained for microwave-assisted extraction with a mixture of HCl 6 M + NaCl 0.5 M. Finally, the proposed method was satisfactorily applied to real fish samples collected from different markets in the central region of Chile, presenting levels ranging from 0.73 – 3.4 mg kg-1.	en-US
dc.format	application/pdf
dc.language	eng
dc.publisher	Sociedad Chilena de Química	en-US
dc.relation	http://www.jcchems.com/index.php/JCCHEMS/article/view/924/285
dc.rights	Copyright (c) 2019 Journal of the Chilean Chemical Society	en-US
dc.rights	https://creativecommons.org/licenses/by-nc-sa/4.0	en-US
dc.source	Journal of the Chilean Chemical Society; Vol 63 No 4 (2018): Journal of the Chilean Chemical Society	en-US
dc.source	0717-9707
dc.source	0717-9324
dc.subject	Mercury speciation	en-US
dc.subject	Monolithic column	en-US
dc.subject	Fish samples	en-US
dc.title	EVALUATION OF MONOLITHIC COLUMN FOR INORGANIC MERCURY AND METHYLMERCURY DETERMINATION IN FISH SAMPLE ANALYSIS	en-US
dc.type	info:eu-repo/semantics/article
dc.type	info:eu-repo/semantics/publishedVersion

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