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AuthorAbou Elezz, Ahmed
AuthorHassan, Hassan Mustafa
AuthorAlsaadi, Hamood Abdulla
AuthorEasa, Ahmed
AuthorAl-Meer, Saeed
AuthorElsaid, Khaled
AuthorGhouri, Zafar Khan
AuthorAbdala, Ahmed
Available date2019-04-18T08:59:16Z
Publication Date2018-08-23
Publication NameMethods and Protocolsen_US
Identifierhttp://dx.doi.org/10.3390/mps1030031
CitationElezz, A.A.; Mustafa Hassan, H.; Abdulla Alsaadi, H.; Easa, A.; Al-Meer, S.; Elsaid, K.; Ghouri, Z.K.; Abdala, A. Validation of Total Mercury in Marine Sediment and Biological Samples, Using Cold Vapour Atomic Absorption Spectrometry. Methods Protoc. 2018, 1, 31.
URIhttp://hdl.handle.net/10576/11492
AbstractA method for the measurement of total mercury (T-Hg) in environmental samples using cold vapour atomic absorption spectrometry (CV AAS) has been validated yielding a dynamic range (0.04–10.00 g/kg) and high certified reference material (CRM) recovery (>90%). The validation was carried out according to International Union of Pure and Applied Chemistry (IUPAC) validation and Eurachem Guides. A freeze-dried and homogenised sample was weighed and then digested using Suprapur acids (HNO3, H2SO4, and HF) with potassium dichromate solution in a hot block digestion system. A calibration curve was constructed (R2 > 0.999). Two CRMs (Marine Sediment Reference Material (PACS-3) and Trace Elements in Muscle Tissue (Trace Elements and Methylmercury in Mussel Tissue (NIST2976)) were utilised for quality assurance and control. The limit of quantification (LOQ) calculated as 0.04 g/kg, and uncertainty (U) calculated as 2%. The obtained results showed the suitability of this method for direct mercury measurement in environmental samples. Additionally, the proficiency of this method was recognised by accreditation under the standard of International Organization for Standardization (ISO/IEC 17025:2017) for competence of testing and calibration laboratories.
Languageen
PublisherMDPI
Subjecttotal mercury
Subjectvalidation method
SubjectIUPAC
Subjectabsorption spectrometry
Subjectquantification
TitleValidation of Total Mercury in Marine Sediment and Biological Samples, Using Cold Vapour Atomic Absorption Spectrometry
TypeArticle
Issue Number1
Volume Number1
ESSN2409-9279


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