scholarly journals Determination of mercury speciation in fish tissue with a direct mercury analyzer

2013 ◽  
Vol 32 (6) ◽  
pp. 1237-1241 ◽  
Author(s):  
Benjamin D. Barst ◽  
Chad R. Hammerschmidt ◽  
Matthew M. Chumchal ◽  
Derek C.G. Muir ◽  
James D. Smith ◽  
...  
Keyword(s):  
Fish Tissue ◽  
Mercury Speciation ◽  
Direct Mercury Analyzer ◽  
Mercury Analyzer

Use of a direct mercury analyzer® for mercury speciation in different matrices without sample preparation

2017 ◽  
Vol 9 (14) ◽  
pp. 2159-2167 ◽  
Author(s):  
Cláudia Carvalhinho Windmöller ◽  
Nayara Carolinne Silva ◽  
Pedro Henrique Morais Andrade ◽  
Louise Aparecida Mendes ◽  
Cláudia Magalhães do Valle
Keyword(s):  
Sample Preparation ◽  
Mercury Speciation ◽  
Direct Mercury Analyzer ◽  
Mercury Analyzer

Hg concentration as a function of temperature for a Hg(0) standard using a direct Hg analyzer.

scholarly journals Determination of Metals in Tree Rings by ICP-MS Using Ash from a Direct Mercury Analyzer

Molecules ◽  
2020 ◽  
Vol 25 (9) ◽  
pp. 2126
Author(s):  
Byunggwon Jeon ◽  
James V. Cizdziel
Keyword(s):  
Tree Rings ◽  
Loblolly Pine ◽  
Acid Digestion ◽  
Shortleaf Pine ◽  
Volatile Elements ◽  
Microwave Assisted ◽  
Direct Mercury Analyzer ◽  
Icp Ms ◽  
Mercury Analyzer

Elemental profiles in cores of tree trunks (bole wood) have been used for environmental monitoring and reconstruction of metal pollution history. Mercury (Hg) is a global pollutant that can be accurately measured in tree rings in a simple and pragmatic fashion using a direct mercury analyzer (DMA) that is based on thermal decomposition, amalgamation, and atomic absorption spectrophotometry. In this feasibility study, we demonstrate that the ash remaining after the DMA analyses can be used to quantify a wide range of other non-volatile elements (Ba, Be, Co, Cr, Cu, Fe, Ga, Mg, Mn, Ni, Pb, Sr, Th, and U) in that same sample of wood by inductively coupled plasma mass spectrometry (ICP-MS) after microwave-assisted acid digestion. Other elements (Ag, Cd, Cs, Rb, Tl, and V) exhibited poor recoveries, possibly due to losses during sample preparation. We assessed the accuracy with reference materials, spikes, and by comparison with EPA Method 3052 (Microwave Assisted Acid Digestion of Siliceous and Organically Based Matrices). For the first group of elements (deemed suitable for the method), recoveries ranged between 80% and 120% and the relative standard deviation was generally < 15%, indicating acceptable precision. We applied the method to five species of trees: eastern red cedar (Juniperus virginiana), loblolly pine (Pinus taeda), shortleaf pine (Pinus echinata), white oak (Quercus alba), and tulip poplar (Liriodendron tulipifera) from Holly Springs National Forest in north Mississippi, USA. Mercury concentrations (ng/g ± SE) were highest in the cedar (1.8 ± 0.3; n = 5), followed by loblolly pine (1.6 ± 0.3, n = 3), shortleaf pine (1.2 ± 0.2; n = 3), oak (1.1 ± 0.2; n = 5), and poplar (0.5 ± 0.1; n = 5). Concentrations of other elements were generally Fe > Mg > Ba ≈ Sr ≈ Mn > Cr ≈ Cu > Ni ≈ Rb > Co > Ga ≈ Ag, with the other elements generally below the method detection limit (MDL). Overall, we showed that the DMA can be used to not only determine total Hg in segments of tree core, but can serve as the ashing step in the preparation of wood for ICP-MS analysis, thus allowing the determination of non-volatile elements along with Hg in the very same sample.

Determination of Total Mercury in Sushi Samples Employing Direct Mercury Analyzer

2015 ◽  
Vol 8 (9) ◽  
pp. 2301-2307 ◽  
Author(s):  
Marcelo A. Morgano ◽  
Raquel F. Milani ◽  
Adriana A. M. Perrone
Keyword(s):  
Total Mercury ◽  
Direct Mercury Analyzer ◽  
Mercury Analyzer

scholarly journals MERCURY SPECIATION USING MICROCOLUMNS WITH A DIRECT MERCURY ANALYZER (DMA)

2020 ◽  
Author(s):  
BRIAN LOONEY ◽  
THOMAS WHITE ◽  
THOMAS PETERS ◽  
HOLLY VERMEULEN ◽  
EMILY FABRICATORE ◽  
...  
Keyword(s):  
Mercury Speciation ◽  
Direct Mercury Analyzer ◽  
Mercury Analyzer

scholarly journals Comparison of direct mercury analyzer and FIA-CV-AAS in determination of methylmercury in fish

2016 ◽  
Vol 733 ◽  
pp. 012022
Author(s):  
J C Ulrich ◽  
M A Hortellani ◽  
J E S Sarkis ◽  
M A Nakatsubo
Keyword(s):  
Direct Mercury Analyzer ◽  
Mercury Analyzer

Comparison of ICP-MS and direct mercury analyzer for the analysis of mercury in pharmaceuticals

Planta Medica ◽  
2015 ◽  
Vol 81 (16) ◽  
Author(s):  
Y Kho ◽  
M Kim ◽  
NY Park ◽  
H Park ◽  
JH Shin
Keyword(s):  
Direct Mercury Analyzer ◽  
Icp Ms ◽  
Mercury Analyzer
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