Direct determination of Pd, Pt and Rh in fire assay lead buttons by laser ablation-ICP-OES: automotive exhaust catalysts as an example

2011 ◽  
Vol 26 (8) ◽  
pp. 1679 ◽  
Author(s):  
Sien Compernolle ◽  
Dorine Wambeke ◽  
Ine De Raedt ◽  
Kristof Kimpe ◽  
Frank Vanhaecke
Keyword(s):  
Laser Ablation ◽  
Direct Determination ◽  
Icp Oes ◽  
Automotive Exhaust ◽  
Fire Assay ◽  
Exhaust Catalysts ◽  
In Fire

Development of laser ablation dielectric barrier discharge optical emission spectrometry (LA-DBD-OES) for direct determination of sulphur and chloride in condensed phase and its application in pharmaceutical analysis

The Analyst ◽  
2021 ◽  
Author(s):  
Xuelu Ding ◽  
Chaoqun Geng ◽  
Suhan Zhai ◽  
Xiaoyan Cao ◽  
Zhenyan Shi ◽  
...  
Keyword(s):  
Laser Ablation ◽  
Dielectric Barrier Discharge ◽  
Organic Compounds ◽  
Pharmaceutical Analysis ◽  
Barrier Discharge ◽  
Direct Determination ◽  
Optical Emission ◽  
Emission Spectrometry ◽  
Dielectric Barrier

An infrared laser (808 nm) has been coupled with dielectric barrier discharge (DBD) for optical emission spectrometric determination of S and Cl in organic compounds. The use of a continuous...

scholarly journals Sample Digestion and Combined Preconcentration Methods for the Determination of Ultra-Low Gold Levels in Rocks

Molecules ◽  
2019 ◽  
Vol 24 (9) ◽  
pp. 1778
Author(s):  
Yan-hong Liu ◽  
Bo Wan ◽  
Ding-shuai Xue
Keyword(s):  
Inductively Coupled Plasma ◽  
Direct Determination ◽  
Important Indicator ◽  
Fire Assay ◽  
Sample Digestion ◽  
Inductively Coupled ◽  
Plasma Mass Spectrometry ◽  
Solid Adsorbents ◽  
Exchange Resins

The gold abundance in basic rocks, which normally varies between 0.5 and 5 ppb, has served as a very important indicator in many geoscience studies, including those focused on the planetary differentiation, redistribution of elements during the crustal process, and ore genesis. However, because gold is a monoisotopic element that exhibits a nugget effect, it is very difficult to quantify its ultra-low levels in rocks, which significantly limits our understanding of the origin of gold and its circulation between the Earth crust, mantle, and core. In this work, we summarize various sample digestion and combined preconcentration methods for the determination of gold amounts in rocks. They include fire assay, fire assay combined with Te coprecipitation and instrumental neutron activation analysis (INAA) or laser ablation inductively coupled plasma mass spectrometry, fusion combined with Te coprecipitation and anion exchange resins, dry chlorination, wet acid digestion combined with precipitation, ion exchange resins, solvent extraction, polyurethane foam, extraction chromatography, novel solid adsorbents, and direct determination by INAA. In addition, the faced challenges and future perspectives in this field are discussed.

A matrix effect and accuracy evaluation for the determination of elements in milk powder LIBS and laser ablation/ICP-OES spectrometry

2011 ◽  
Vol 401 (9) ◽  
pp. 2681-2689 ◽  
Author(s):  
N. Gilon ◽  
J. El-Haddad ◽  
A. Stankova ◽  
W. Lei ◽  
Q. Ma ◽  
...  
Keyword(s):  
Laser Ablation ◽  
Matrix Effect ◽  
Milk Powder ◽  
Accuracy Evaluation ◽  
Icp Oes

scholarly journals Trace Determination of Selected Heavy Metal Ions in Bleaching Creams in the Local Market of Saudi Arabia

2017 ◽  
Vol 14 (4) ◽  
pp. 1349-1354
Author(s):  
Faten M. Ali Zainy
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Saudi Arabia ◽  
Direct Determination ◽  
Optical Emission ◽  
Local Market ◽  
Icp Oes ◽  
Recovery Percentage ◽  
High Concentrations

ABSTRACT: Bleaching cream and cosmetics products of skin have risk of toxicity and deleterious effects to the human health because of their multiplicative contamination with heavy metals and uncertain mixing of different components. Thus, the present study reports a comprehensive study on the trace selected heavy metal (Hg, Cd, Ti, Bi, Pb, As and Tl) determination in 16 samples of bleaching creams and samples mixture of bleaching creams simultaneously to get a double activity (shiny and faster) on the skin from the local market of Saudi Arabia. Samples were digested with high pressure microwave technique followed by direct determination by inductive coupled plasma - optical emission spectrometer (ICP-OES). Hg, Bi, Ti and Pb levels on samples were found equal 5739.16, 7013.53, 21407.73, 456.70 µg/g, respectively whereas other elements (Cd, As and Tl) were found less than 28.99 ppm. One sample of the mixtures showed high concentrations of Hg (13338.50 µg/g,) and Bi (619.23 µg/g). Thus, creams and cream mixtures containing heavy metals above the permissible limit must be blind. The lower detection limits (LOD) were achieved at 2.5-50 µg/g concentration level, RSD was less than 14.72%, and recovery percentage for cosmetics were in the range of 88.52 -99.62%. The proposed method for sample digestion and ICP-OES measurements was fast, precise, convenient and provided good recovery of the tested elements.

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