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- www.britannica.com
  
  isotope dilution | chemistry | Encyclopedia Britannica
  
  isotope dilution, radiochemical method of analysis for measuring the mass and quantity of an element in a substance. The procedure involves adding to a substance a known quantity of a radioisotope of the element to be measured and mixing it with the stabl
  
  2024-07-10
  
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- www.ncbi.nlm.nih.gov
  
  Stable isotope dilution assay for the accurate determination of mycotoxins in maize by UHPLC-MS/MS
  
  Sample preparation Ground and homogenized maize samples (5.00 ± 0.01 g) were weighed into 50-mL polypropylene tubes (VWR International). The first extraction was performed with the fourfold amount (20 mL) of extraction solvent 1 (acetonitrile/water/formic
  
  2024-07-11
  
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On-line isotope dilution analysis with the 7700 Series ICP-MS: Analysis of trace elements in high ma

日期：2024-07-12

Abstract This work describes a simple, accurate and precise ICP-MS method for the direct determination of trace elements in high matrix samples by on-line isotope dilution analysis (OIDA). The use of isotope dilution eliminates the need for time-consuming...

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Quantitative, multiplexed assays for low abundance proteins in plasma by targeted mass spectrometry

日期：2024-07-17

1. Mol Cell Proteomics. 2007 Dec;6(12):2212-29. Epub 2007 Oct 15. Quantitative, multiplexed assays for low abundance proteins in plasma by targeted mass spectrometry and stable isotope dilution. Keshishian H, Addona T, Burgess M, Kuhn E, Carr SA. ......

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METHOD 6800 ELEMENTAL AND SPECIATED ISOTOPE DILUTION MASS SPECTROMETRY

日期：2024-07-16

6800 - 1 Revision 0 February 2007 METHOD 6800 ELEMENTAL AND SPECIATED ISOTOPE DILUTION MASS SPECTROMETRY SW-846 is not intended to be an analytical training manual. Therefore, method procedures are written based on the assumption ......

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Isotope Dilution Mass Spectrometry - A Primary Method of Measurement and Its Role for RM Certificati

日期：2024-07-15

Isotope Dilution Mass Spectrometry - A Primary Method of Measurement and Its Role for RM Certification 141 to the conditions in the Ar plasma. Mainly no matrix separation takes place in conventional ICPMS and therefore molecular and isobaric interferences...

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Isotope - Wikipedia, the free encyclopedia

日期：2024-07-10

Isotopes are variants of a particular chemical element which differ in neutron number, although all isotopes of a given element have the same number of protons in each atom. The term isotope is formed from the Greek roots isos (ἴσος "equal") and topos (τό...

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Chapter 3 The measurement technique of isotope dilution inductively coupled plasma mass spectrometry

日期：2024-07-10

The double isotope dilution technique is based on the use of a primary assay standard. The accurately known concentration of the primary assay standard is utilised to obtain an accurate value of the elemental concentration for the spike isotope standard t...

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isotope - definition of isotope by The Free Dictionary

日期：2024-07-11

The researchers have used the known rates of all of those xenon-producing processes and the isotope concentrations that they have measured in their sample to calculate that the reactor turned on for about half an hour and then shut down for some two-and-a...

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Isotope | Define Isotope at Dictionary.com

日期：2024-07-15

The sales pitch is irresistible: the principal fuel, a heavy isotope of hydrogen called deuterium, can be extracted from water. More tellingly, radioactive-isotope dating suggests that they are the same age. The reactor would run on an isotope of hydrogen...

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