Column: Atomic Perspectives

May 01, 2011
Spectroscopy
By Spectroscopy Editors
Most analytical measurements performed by either inductively coupled plasma–optical emission spectrometry (ICP-OES) or ICP–mass spectrometry (MS) require accuracy and precision, which are essential for obtaining correct answers. However, all modern ICP-OES and ICP-MS instruments have the ability to perform semiquantitative analyses. This seems strange since accuracy is important, but semiquantitative analysis does have a role in analytical measurements. This article will explore why semiquantitative analysis is important and will look at various ways it can be performed and implemented.
Mar 01, 2011
Spectroscopy
By Spectroscopy Editors
The USP proposes the use of analytical techniques capable of measuring impurities at the specified limits with optimal selectivity, sensitivity, simplicity, and robustness.
Nov 01, 2010
Spectroscopy
By Spectroscopy Editors
ICP-MS is powerful technique capable of measuring very low levels in a wide variety of sample types, limited only by cleanliness and the presence of interences. This article will examine the types of interferences that are encountered and various ways of dealing with them using a quadrupole ICP-MS instrument: mathematical correction equations, matrix removal, and cell-based ICP-MS. The strengths and limitations of each method will be discussed.
Jul 01, 2010
Spectroscopy
While viewed as a mature technology, atomic absorption is still an attractive choice, particularly in the area of food safety.
May 01, 2010
Spectroscopy
By Spectroscopy Editors
Guest authors Steve Wilbur and Ed McCurdy discuss the role of qualifier ions in ICP-MS research in this month's installment of "Atomic Perspectives."
Mar 01, 2010
Spectroscopy
By Spectroscopy Editors
This article is a follow-up to an earlier "Atomic Perspectives" column on the spectral lines of hydrogen (1).
Nov 01, 2009
Spectroscopy
By Spectroscopy Editors
Speciation analysis by LC-ICP-MS has been growing rapidly in popularity and application over the past several years. Not only have people begun looking at different elements and species, but there has also been an increase in the variety of matrices that speciation analysis is being performed on.
Aug 24, 2009
Spectroscopy
By Spectroscopy Editors
One of the most difficult tasks in any laboratory is the validation and assurance of all data being reported. Whether or not this is being mandated by a regulating agency, it is imperative that the quality of data from any analysis be controlled. How do the laboratory workers ensure the quality of their reported analyses and how do they demonstrate this quality?
Jul 14, 2009
Spectroscopy
By Spectroscopy Editors
Volker Thomsen takes a look at the impact that the discovery of X-rays by Wilhelm Röntgen in 1895 has had on the world.
May 01, 2009
Spectroscopy
By Spectroscopy Editors
Guest columnist Steven Wilbur discusses the elemental nature of ICP-MS and its strength as a universal quantifier, an aspect of the technique he believes has not received enough attention.
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