Column: Atomic Perspectives

Mar 01, 2015
Spectroscopy
This installment evaluates the application requirements for the determination of 15 elemental impurities in pharmaceutical materials as described in the new United States Pharmacopeia (USP) Chapters <232> and <233> and offers suggestions about which atomic spectroscopic technique might be the most suitable to use.
Oct 30, 2014
Spectroscopy
An application of atomic spectroscopy for experiential learning through archaeological investigations is presented.
Jul 01, 2014
Spectroscopy
In quantitative XRF analyses, the largest errors generally arise from sample preparation. To address that problem, this installment of "Atomic Perspectives" presents the fundamental assumptions necessary to prepare a bulk powder material for the best possible accuracy. It also explains the physics involved during the excitation and emission processes as well as the major sources of error in preparing powders. Further, it describes the basics of grinding and pressing, and the fusion method of sample preparation.
May 01, 2014
Spectroscopy
A new sodium peroxide fusion method is described, as well as the conditions for inductively coupled plasma–optical emission spectrometry, and a list of the accuracy and precision measurements for all prepared samples.
Mar 14, 2014
Spectroscopy
A critical review of the main developments in instrument technology, calibration, and sample preparation that have made it possible to determine low sulfur concentrations in fuels followed by a discussion of strategies to minimize spectral interferences related to sulfur determination by ICP-MS, such as collision–reaction cells, high-resolution mass analyzers, and the interference standard method.
Nov 01, 2013
Spectroscopy
Evaluation guidelines and important factors for laboratory scientists to consider when choosing an inductively coupled plasma–mass spectrometry instrument
Jul 01, 2013
Spectroscopy
The main areas of training necessary for a good foundation in the analytical methodology of XRF spectroscopy are discussed.
May 01, 2013
Spectroscopy
A case study demonstrating the use of an ICP-MS system to detect low levels of beryllium in urine, using a simple but highly sensitive method
Mar 01, 2013
Spectroscopy
A historical account of Talbot's contributions to spectroscopy
Jul 01, 2012
Spectroscopy
How to reduce plasma-, matrix-, and solvent-induced polyatomic interference by bleeding a collision–reaction gas into the tip of the interface skimmer cone
native1_300x100
lorem ipsum