Discovery of a Neoproterozoic granite in the Northern Alxa region, NW China: its age, petrogenesis and tectonic significance

2015 ◽  
Vol 153 (3) ◽  
pp. 512-523 ◽  
Author(s):  
WEN ZHANG ◽  
VICTORIA PEASE ◽  
QINGPENG MENG ◽  
RONGGUO ZHENG ◽  
TONNY B. THOMSEN ◽  
...  
Keyword(s):  
Inductively Coupled Plasma ◽  
Calc Alkaline ◽  
Alkaline Pluton ◽  
Crustal Rocks ◽  
Inductively Coupled ◽  
Icp Ms ◽  
Tectonic Significance ◽  
Southern Central ◽  
Plasma Mass Spectrometry ◽  
Very High

AbstractA Neoproterozoic granite (Western Huhetaoergai granite) from the Northern Alxa region, southern Central Asia Orogenic Belt (CAOB) is first recognized by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) U–Pb zircon dating (889±8 Ma). It is a highly fractionated potassium-rich calc-alkaline pluton with lowεNd(t) (−2.6 to −1.1) and high (87Sr/86Sr)t(0.727305–0.735626), and is probably derived from a mantle source and assimilated crustal rocks with very high87Sr/86Sr. Regional geology implies that it may reflect the existence of a microcontinent, and the formation of the Western Huhetaoergai granite is related to the assembly of Rodinia.

A Study of Internal Standardization in Inductively Coupled Plasma-Mass Spectrometry

1987 ◽  
Vol 41 (5) ◽  
pp. 801-806 ◽  
Author(s):  
Joseph J. Thompson ◽  
R. S. Houk
Keyword(s):  
Mass Spectrometry ◽  
Inductively Coupled Plasma ◽  
Internal Standard ◽  
Operating Conditions ◽  
Inductively Coupled ◽  
Icp Ms ◽  
Ionization Suppression ◽  
Plasma Mass Spectrometry ◽  
Internal Standardization ◽  
Very High

Internal standardization is employed to compensate for ionization suppression in inductively coupled plasma-mass spectrometry (ICP-MS). By examination of the response of over 50 elements to a sodium matrix under different operating conditions, it is apparent that an internal standard is most effective when it is close in mass and ionization energy to the analyte. The extent of suppression and the relative order of suppression of various analyte elements can differ for various matrix elements. Generally, precision was improved by the use of internal standardization; the extent of improvement differed for different analyte elements and operating conditions. A comparison between ICP-MS with ultrasonic and pneumatic nebulization is described. The ultrasonic nebulizer usually exhibits better sensitivity and detection limits for analyte elements, unless the extent of suppression induced by the concomitant matrix is very high.

scholarly journals Concentration of Gallium in the Permo-Carboniferous Coals of China

2009 ◽  
Vol 27 (5) ◽  
pp. 333-343 ◽  
Author(s):  
Cunliang Zhao ◽  
Shenjun Qin ◽  
Yinchao Yang ◽  
Yanheng Li ◽  
Mingyue Lin
Keyword(s):  
Inductively Coupled Plasma ◽  
Coal Seams ◽  
Ore Deposit ◽  
Inductively Coupled ◽  
Gallium Concentration ◽  
Icp Ms ◽  
Plasma Mass Spectrometry ◽  
Current Price ◽  
Different Sources ◽  
Very High

Gallium is widely used in electronic industry and its current price is about 500 US dollars pro kilogram. It has been found that its contents are very high in Permo-Carboniferous coal of China. In order to look for valuable associated gallium deposits in coal, gallium contents of 177 coal samples were determined by using inductively coupled plasma-mass spectrometry (ICP-MS) and the data of 873 coal samples from Chinese Permo-Carboniferous coalfields were collected. The results show that the average gallium concentration of Chinese Permo-Carboniferous coals is 15.49μg·g−1. There are two concentration types of gallium in Chinese Permo-Carboniferous coals: One type is that gallium has enriched to an ore deposit, and another type is that gallium is locally enriched in coal seams, but has not formed a valuable associated gallium ore deposit. The gallium concentration in Chinese Permo-Carboniferous coal may have several different sources: concentration in sedimentation stage, magmatic hydrothermal inputs and low-temperature hydrothermal fluids.

scholarly journals Analytical applications of single particle inductively coupled plasma mass spectrometry: A comprehensive and critical review

2021 ◽  
Author(s):  
Eduardo Bolea ◽  
Maria Sierra Jimenez ◽  
Josefina Perez-Arantegui ◽  
Juan C. Vidal ◽  
Mariam Bakir ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Data Acquisition ◽  
Single Particle ◽  
Critical Review ◽  
Inductively Coupled Plasma ◽  
Inductively Coupled ◽  
High Data ◽  
Icp Ms ◽  
Plasma Mass Spectrometry ◽  
Very High

Single particle inductively coupled plasma mass spectrometry (SP-ICP-MS) refers to the use of ICP-MS as a particle counting technique. When ICP-MS measurements are performed at very high data acquisition frequencies,...

Single Particle Inductively Coupled Plasma Mass Spectrometry: Investigating Nonlinear Response Observed in Pulse Counting Mode and Extending the Linear Dynamic Range by Compensating for Dead Time Related Count Losses on a Microsecond Timescale

2019 ◽  
Author(s):  
Ingo Strenge ◽  
Carsten Engelhard
Keyword(s):  
Mass Spectrometry ◽  
Inductively Coupled Plasma ◽  
Nonlinear Response ◽  
Dynamic Range ◽  
Dead Time ◽  
Inorganic Nanoparticles ◽  
Linear Dynamic Range ◽  
Inductively Coupled ◽  
Icp Ms ◽  
Plasma Mass Spectrometry

<p>The article demonstrates the importance of using a suitable approach to compensate for dead time relate count losses (a certain measurement artefact) whenever short, but potentially strong transient signals are to be analysed using inductively coupled plasma mass spectrometry (ICP-MS). Findings strongly support the theory that inadequate time resolution, and therefore insufficient compensation for these count losses, is one of the main reasons for size underestimation observed when analysing inorganic nanoparticles using ICP-MS, a topic still controversially discussed.</p>

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