Characterisation of trace elements and methylmercury in an estuarine sediment reference material, IAEA-405

2004 ◽  
Vol 6 (1) ◽  
pp. 48 ◽  
Author(s):  
Eric J. Wyse ◽  
Marina Coquery ◽  
Sabine Azemard ◽  
Stephen J. de Mora
Keyword(s):  
Trace Elements ◽  
Reference Material ◽  
Estuarine Sediment ◽  
Sediment Reference Material

Preparation of a reference material for crude oil trace elements: Study of homogeneity and stability

2020 ◽  
Vol 155 ◽  
pp. 104799
Author(s):  
Thábita Thiciana Bastos Marchezi ◽  
Luiza Valli Vieira ◽  
Rodrigo C. de Sena ◽  
Eustáquio Vinicius Ribeiro de Castro ◽  
Geisamanda Pedrini Brandão ◽  
...  
Keyword(s):  
Trace Elements ◽  
Reference Material ◽  
Crude Oil

scholarly journals Validation of Total Mercury in Marine Sediment and Biological Samples, Using Cold Vapour Atomic Absorption Spectrometry

2018 ◽  
Vol 1 (3) ◽  
pp. 31 ◽  
Author(s):  
Ahmed Elezz ◽  
Hassan Mustafa Hassan ◽  
Hamood Abdulla Alsaadi ◽  
Ahmed Easa ◽  
Saeed Al-Meer ◽  
...  
Keyword(s):  
Trace Elements ◽  
Reference Material ◽  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Marine Sediment ◽  
Environmental Samples ◽  
Total Mercury ◽  
Absorption Spectrometry ◽  
Freeze Dried ◽  
Cold Vapour

A 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 μg/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 µg/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.

A New Coprecipitation Methodology with Lutetium Hydroxide for Preconcentration of Heavy Metal Ions in Herbal Plant Samples

2014 ◽  
Vol 97 (4) ◽  
pp. 1189-1194 ◽  
Author(s):  
Mustafa Soylak ◽  
Ipek Murat
Keyword(s):  
Heavy Metal ◽  
Trace Elements ◽  
Reference Material ◽  
Heavy Metal Ions ◽  
Absorption Spectrometry ◽  
Aqueous Sample ◽  
Present Procedure ◽  
Plant Samples ◽  
Herbal Plant ◽  
Spinach Leaves

Abstract A new coprecipitation methodology that used lutetium hydroxide as a precipitant for Cu(II), Pb(II), Mn(II), Co(II), Cd(II), Fe(III), and Ni(II) ions in herbal plant and water samples for analysis by atomic absorption spectrometry has been investigated. The parameters such as pH, amount of lutetium, and volume of aqueous sample were optimized for the recovery of these seven metals. The effects of concomitant ions on the separation-preconcentration of analytes were also checked. The validation of the procedure was checked with addition recovery tests and analysis of Standard Reference Material 1570a-Trace Elements in Spinach Leaves and TMDA-70 fortified lake water Certified Reference Material. The LODs for analyte ions were in the range of 1.7–7.2 μg/L. The application of the present procedure was successfully performed for the analysis of analyte contents of herbal plant samples from Turkey.

Sign in / Sign up

Export Citation Format

Share Document