scholarly journals The performance of single and multi-collector ICP-MS instruments for fast and reliable34S/32S isotope ratio measurements

2016 ◽  
Vol 8 (42) ◽  
pp. 7661-7672 ◽  
Author(s):  
Ondrej Hanousek ◽  
Marion Brunner ◽  
Daniel Pröfrock ◽  
Johanna Irrgeher ◽  
Thomas Prohaska
Keyword(s):  
Inductively Coupled Plasma ◽  
Isotope Ratio ◽  
Mass Spectrometers ◽  
Inductively Coupled ◽  
Icp Ms ◽  
Technical Principles ◽  
Isotope Ratio Measurements ◽  
S Isotope

The performance and validation characteristics of different single collector inductively coupled plasma mass spectrometers based on different technical principles (ICP-SFMS, ICP-QMS in reaction and collision modes, and ICP-MS/MS) were evaluated in comparison to the performance of MC ICP-MS for fast and reliable S isotope ratio measurements.

Precise measurement of stable potassium isotope ratios using a single focusing collision cell multi-collector ICP-MS

2016 ◽  
Vol 31 (4) ◽  
pp. 1023-1029 ◽  
Author(s):  
Weiqiang Li ◽  
Brian L. Beard ◽  
Shilei Li
Keyword(s):  
High Precision ◽  
Mass Spectrometer ◽  
Inductively Coupled Plasma ◽  
Isotope Ratio ◽  
Precise Measurement ◽  
Isotope Ratios ◽  
Collision Cell ◽  
Inductively Coupled ◽  
Icp Ms ◽  
Isotope Ratio Measurements

High precision potassium isotope ratio measurements were made using a collision-cell equipped single focusing Multi-Collector Inductively Coupled Plasma Mass Spectrometer (MC-ICP-MS).

Some features of the analysis of water, soil and ground in mass spectrometers with inductively coupled plasma (ICP-MS)

2021 ◽  
Vol 5 ◽  
pp. 70-78
Author(s):  
T. K. Nurubeyli ◽  
Keyword(s):  
Matrix Element ◽  
Space Charge ◽  
Inductively Coupled Plasma ◽  
Matrix Effects ◽  
Atomic Emission ◽  
Space Charge Density ◽  
Mass Spectrometers ◽  
Mass Spectral ◽  
Inductively Coupled ◽  
Icp Ms

The paper discusses the possibilities and limitations of the method of mass spectrometry with inductively coupled plasma on the example of elemental analysis of natural and drinking waters, soils and grounds. It is shown that the combination of this method with the simpler atomic emission method makes it possible to expand the range of determined elements, simplify the mass-spectral analysis and increase its reliability. It is shown that the use of the ICP-MS method in the analysis of various objects makes it possible to determine the majority of elements with extremely low detection limits. The reason for the manifestation of matrix effects is the positive space charge formed between the interface and the extractor, the composition of which is determined by the composition of singly charged argon ions. The increase in the concentration of ions in this region is the appearance of a matrix element, which facilitates the scattering of ions from this region. It was found that the heavier the ions of the matrix element, the more the space charge density increases and the scattering occurs. A serious limitation of the method is associated with interferences due to the presence of a certain amount of two and three-charged ions in the plasma. These ions, which have approximately the same mass as the isotopes of the element being determined, are formed as a result of various plasma-chemical reactions and interfere with the determination.

6. Measuring isotopes

2016 ◽  
Author(s):  
Rob Ellam
Keyword(s):  
Inductively Coupled Plasma ◽  
Isotope Ratio ◽  
Ion Source ◽  
Routine Laboratory ◽  
Mass Filter ◽  
Mass Spectrometers ◽  
Inductively Coupled ◽  
Gas Source ◽  
Essential Components ◽  
Secondary Ion

Mass spectrometers have become routine laboratory instruments in many disciplines. ‘Measuring isotopes: mass spectrometers’ concentrates on those used to quantify the abundance of different isotopes—gas source isotope ratio, thermal ionization, inductively coupled plasma, and secondary ion mass spectrometers. A mass spectrometer can be used to quantify the concentration of a particular element by monitoring an isotope of that element not overlapped by isotopes of other elements. All mass spectrometers have three essential components: an ion source, a mass filter, and a detector. There are two main types of detector: Faraday detectors measure large signals and a variant of photomultiplier tubes measures small isotope signals.

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