CRM Solutions

Susan J. Evans Norris

Susan J. Evans Norris

Recent Posts

Reducing Contamination in the Preparation of Metal Alloys for Analysis by ICP

[fa icon="calendar'] Jul 31, 2017 8:00:00 AM / by Susan J. Evans Norris posted in Sample Preparation, metal alloys, ICP

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We have received several questions regarding the best approach to cleaning solid samples and standards that have been prepared as chips for analysis by a total dissolution technique, such as ICP-OES or ICP-MS. Let’s first discuss common approaches for sampling, and then appropriate methodologies for ensuring chips are clean and free from contamination.

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How to Prepare Metal Alloy Samples for Analysis by ICP-OES or ICP-MS

[fa icon="calendar'] Jun 23, 2017 5:57:49 PM / by Susan J. Evans Norris posted in Sample Preparation, metal alloys, ICP

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Metal alloys are commonly analyzed using solid sampling techniques such as Arc/spark optical emission spectroscopy (A/S OES), X-ray Fluorescence Spectroscopy (both Energy Dispersive (ED-XRF) and Wavelength Dispersive (WD-XRF)), and X-ray Diffraction (XRD). These techniques provide fast analysis with little or no sample preparation required, and can be provided as portable units, and in the case of XRF, hand-held units, for maximum flexibility. These techniques also are considered non-destructive in that the metal alloy is left largely unchanged after analysis, and is available for further testing or archiving.

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Improve your ICP-OES Performance by using an Internal Standard

[fa icon="calendar'] Jun 2, 2017 12:40:33 PM / by Susan J. Evans Norris posted in Certified Reference Materials, metal alloys, ICP

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The use of an Internal Standard (IS) can significantly improve both the accuracy and precision of your ICP-OES analytical results. This post addresses:  how internal standards work, how to select an appropriate IS element, and how this methodology can be easily incorporated into your lab’s analytical procedures.

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Three Common Pitfalls to Avoid When Preparing Aqueous Multi-element Standards for AA, ICP, or ICP-MS

[fa icon="calendar'] May 9, 2017 8:00:00 AM / by Susan J. Evans Norris posted in AA, ICP-MA, ICP, Aqueous standards

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Generating high quality, accurate laboratory results starts with high quality, accurate standards. If your calibration standards are not correct, the analyses will not be accurate. Here are three common mistakes, and what you can do to avoid them, when preparing aqueous calibration standards for use in AA, ICP, or ICP-MS techniques.

 

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What is Proficiency Testing ?

[fa icon="calendar'] May 4, 2017 8:00:00 AM / by Susan J. Evans Norris posted in Proficiency Testing

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Proficiency Testing is a key element in the laboratory accreditation process, alongside reference materials, enabling labs to monitor the quality of their analytical results. Proficiency testing determines the performance of individual laboratories for specific tests or measurements, and is used to evaluate laboratories’ continuing performance. PT is also called interlaboratory comparison.

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