Measurement of the molar mass of the 28Si-enriched silicon crystal (AVO28) with HR-ICP-MS

2015 ◽  
Vol 30 (12) ◽  
pp. 2449-2458 ◽  
Author(s):  
Tongxiang Ren ◽  
Jun Wang ◽  
Tao Zhou ◽  
Hai Lu ◽  
Yuan-jing Zhou
Keyword(s):  
Crucial Role ◽  
Molar Mass ◽  
Mass Measurement ◽  
Accurate Determination ◽  
Silicon Crystal ◽  
Avogadro Constant ◽  
Icp Ms ◽  
Definition Of

Accurate molar mass measurement of the highly 28Si-enriched crystal (AVO28) plays a crucial role in the accurate determination of the Avogadro constant and thus the new definition of the kilogram.

Molar-mass measurement of a28Si-enriched silicon crystal for determination of the Avogadro constant

Metrologia ◽  
2014 ◽  
Vol 51 (3) ◽  
pp. 161-168 ◽  
Author(s):  
Tomohiro Narukawa ◽  
Akiharu Hioki ◽  
Naoki Kuramoto ◽  
Kenichi Fujii
Keyword(s):  
Molar Mass ◽  
Mass Measurement ◽  
Silicon Crystal ◽  
Avogadro Constant

A More Accurate Molar Mass of Silicon via High Resolution MC-ICP-Mass Spectrometry

2014 ◽  
Vol 228 (4-5) ◽  
Author(s):  
Axel Pramann ◽  
Olaf Rienitz ◽  
Janine Noordmann ◽  
Bernd Güttler ◽  
Detlef Schiel
Keyword(s):  
Mass Spectrometry ◽  
High Resolution ◽  
Inductively Coupled Plasma ◽  
Molar Mass ◽  
Silicon Crystal ◽  
Inductively Coupled ◽  
Icp Ms ◽  
Plasma Mass Spectrometry ◽  
Icp Mass Spectrometry

AbstractHigh resolution multicollector inductively coupled plasma mass spectrometry (HR-MC-ICP-MS) was applied for the determination of the isotopic composition and molar mass of a silicon crystal material (“Si28”) highly enriched in the

scholarly journals The Avogadro constant: determining the number of atoms in a single-crystal 28 Si sphere

2011 ◽  
Vol 369 (1953) ◽  
pp. 3925-3935 ◽  
Author(s):  
Peter Becker ◽  
Horst Bettin
Keyword(s):  
Single Crystal ◽  
Accurate Determination ◽  
Silicon Crystal ◽  
Fundamental Constant ◽  
Planck Constant ◽  
Amount Of Substance ◽  
Avogadro Constant ◽  
Unique Approach ◽  
Definition Of ◽  
Si Isotope

The Avogadro constant, the number of entities in an amount of substance of one mole, links the atomic and the macroscopic properties of matter. Since the molar Planck constant—the product of the Planck constant and the Avogadro constant—is very well known via the measurement of the Rydberg constant, the Avogadro constant is also closely related to the Planck constant. In addition, its accurate determination is of paramount importance for a new definition of the kilogram in terms of a fundamental constant. Here, we describe a new and unique approach to determine the Avogadro constant from the number of atoms in 1 kg single-crystal spheres that are highly enriched with the 28 Si isotope. This approach has enabled us to apply isotope dilution mass spectroscopy to determine the molar mass of the silicon crystal with unprecedented accuracy. The value obtained, N A =6.022 140 82(18)×10 23  mol −1 , is now the most accurate input datum for a new definition of the kilogram.

A simple and sensitive LC-ICP-MS method for the accurate determination of vitamin B12 in fortified breakfast cereals and multivitamin tablets

2013 ◽  
Vol 28 (6) ◽  
pp. 901 ◽  
Author(s):  
Chinthalapati Siva Kesava Raju ◽  
Lee L. Yu ◽  
John E. Schiel ◽  
Stephen E. Long
Keyword(s):  
Vitamin B12 ◽  
Accurate Determination ◽  
Breakfast Cereals ◽  
Icp Ms

Mass Measurement of 28Si-Enriched Spheres at NMIJ for the Determination of the Avogadro Constant

2017 ◽  
Vol 66 (6) ◽  
pp. 1275-1282 ◽  
Author(s):  
Shigeki Mizushima ◽  
Naoki Kuramoto ◽  
Lulu Zhang ◽  
Kenichi Fujii
Keyword(s):  
Mass Measurement ◽  
Avogadro Constant

scholarly journals Novel Approach for the Accurate Determination of Se Isotope Ratio by Multicollector ICP-MS

2020 ◽  
Vol 92 (24) ◽  
pp. 16097-16104
Author(s):  
Jakub Karasiński ◽  
Andriy Tupys ◽  
Lu Yang ◽  
Zoltan Mester ◽  
Ludwik Halicz ◽  
...  
Keyword(s):  
Isotope Ratio ◽  
Accurate Determination ◽  
Novel Approach ◽  
Icp Ms

Investigation of mass dependence effects for the accurate determination of molybdenum isotope amount ratios by MC-ICP-MS using synthetic isotope mixtures

2014 ◽  
Vol 407 (3) ◽  
pp. 869-882 ◽  
Author(s):  
Dmitry Malinovsky ◽  
Philip J. H. Dunn ◽  
Panayot Petrov ◽  
Heidi Goenaga-Infante
Keyword(s):  
Accurate Determination ◽  
Mass Dependence ◽  
Molybdenum Isotope ◽  
Icp Ms
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