scholarly journals Direct Determination of Si Isotope Ratios in Natural Waters and Commercial Si Standards by Ion Exclusion Chromatography Multicollector Inductively Coupled Plasma Mass Spectrometry

2014 ◽  
Vol 86 (18) ◽  
pp. 9301-9308 ◽  
Author(s):  
Lu Yang ◽  
Lian Zhou ◽  
Zhaochu Hu ◽  
Shan Gao
Keyword(s):  
Inductively Coupled Plasma ◽  
Natural Waters ◽  
Direct Determination ◽  
Inductively Coupled ◽  
Ion Exclusion Chromatography ◽  
Ion Exclusion ◽  
Exclusion Chromatography ◽  
Plasma Mass Spectrometry ◽  
Si Isotope

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.

scholarly journals Slurry nebulisation ICP-MS direct determination of high field strength elements (Nb, Ta, Zr, and Hf) in silicate rocks

RSC Advances ◽  
2019 ◽  
Vol 9 (56) ◽  
pp. 32435-32440 ◽  
Author(s):  
Rui Tong ◽  
Wei Guo
Keyword(s):  
Field Strength ◽  
Inductively Coupled Plasma ◽  
High Field ◽  
Direct Determination ◽  
High Field Strength ◽  
Inductively Coupled ◽  
Icp Ms ◽  
Plasma Mass Spectrometry ◽  
Silicate Rocks

A simple, rapid, and reliable method based on slurry nebulisation inductively coupled plasma mass spectrometry (ICP-MS) was developed for the direct determination of four high field strength elements (HFSEs, namely, Nb, Ta, Zr, and Hf) in refractory silicate rocks.

Sign in / Sign up

Export Citation Format

Share Document