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Atomic Perspectives Column

X-ray Fluorescence Spectroscopy, Part II: Sample Preparation

July 1, 2014

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.

Quick and Easy Dissolution of Chromite Ores, Ferrochromes, and Chromium Slags for ICP-OES without Using HF or HClO4

May 1, 2014

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.

Sulfur Determination in Fuels by ICP-OES and ICP-MS to Meet Increasingly Stricter Legislation Requirements

March 14, 2014

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.

X-ray Fluorescence Spectroscopy, Part I: The Educational Essentials

July 1, 2013

The main areas of training necessary for a good foundation in the analytical methodology of XRF spectroscopy are discussed.

ICP-MS Analysis of Low-Level Beryllium in Urine

May 1, 2013

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

High-Throughput Soil Analysis Using Inductively Coupled Plasma-Optical Emission Spectrometry

November 1, 2012

ICP-OES can provide assistance in setting up an EPA 200.7 soil analysis method.

Efficient Removal of Polyatomic Spectral Interferences for the Multielement Analysis of Complex Human Biological Samples by ICP-MS

July 1, 2012

How to reduce plasma-, matrix-, and solvent-induced polyatomic interference by bleeding a collision–reaction gas into the tip of the interface skimmer cone

Sample Preparation Problem Solving for Inductively Coupled Plasma-Mass Spectrometry with Liquid Introduction Systems: Solubility, Chelation, and Memory Effects

May 1, 2012

This tutorial on the chemical principles involved in dissolution, stability, and matrix components will help you successfully analyze a broad spectrum of metal analytes with ICP-MS using liquid introduction or flow injection.

Spectral Background Radiation and the "Background Equivalent Concentration" in Elemental Spectrochemistry

March 1, 2012

For any given spectrometric system with a defined resolution and excition results, the background equivalent concentration is a characteristic of spectral lines.

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