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Title
Integration of a Dilution Module in a Mass Spectrometry-Based Online Reaction Monitoring System
Friday, January 20, 2017
Heidi Fleischer
Kerstin Thurow
Vinh Quang Do
Dany Hoffmann
A dilution module based primarily on a mass rate attenuator solves the problem of high concentration solution to the mass spectrometer. The low-flow compensation approach was used to circumvent the ...
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Comparison of ICP-QQQ and MP-AES to Alternative Atomic Spectroscopy Techniques
Friday, February 17, 2017
Shane Elliott
This article gives an overview of the various atomic spectroscopy techniques available to address a range of applications in environmental science, food and agriculture, life sciences and academic ...
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Lab Vacuum Pumps: Selection and Protection
Friday, February 17, 2017
Peter Coffey
Useful tips are given for choosing the right vacuum pump for the lab.
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Quantitating VOCs in Serum Using Automated Headspace-SPME/Cryo-Focusing/Isotope Dilution/Capillary GC/MS
Friday, March 31, 2017
Paul R. Loconto
In January 2007, the author’s lab received a frozen shipment of calibration standards and quality control (QC) samples to perform method validation for quantitating traces of volatile organic ...
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Fume Hoods and Cabinets
Friday, May 19, 2017
Biological safety cabinets and fume hoods protect samples, personnel and the laboratory environment from harsh chemicals or infectious substances.
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How to Avoid Size Mismatch Between Solutes and Column Pores for Optimum HPLC Performance
Wednesday, June 07, 2017
Richard A. Henry
Stephanie Schuster
This article describes a new approach for selecting optimum column pores for separating large molecules without losing high performance.
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Statistics in the Laboratory: The Limit of Detection
Wednesday, June 07, 2017
Stanley N. Deming
The phrase “limit of detection” sounds so simple, yet it leads to one of the biggest, murkiest, most frustrating swamps in the statistical literature.
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Statistics in the Laboratory: The Minimum Consistently Detectable Amount
Tuesday, September 05, 2017
Stanley N. Deming
In the previous column we discussed the limit of detection LD, the minimum signal strength above which we can be confident that analyte is present, but with a small false positive risk a that analyte ...
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ASTM-Approved Method for Simultaneous Determination of Total Nitrogen and Phosphorus in Wastewater by Ion Chromatography
Monday, October 02, 2017
Jeff Rohrer
Richard Jack
Brian De Borba
As natural elements in aquatic ecosystems, nitrogen and phosphorus support the growth of algae and aquatic plants, providing food and shelter for fish and other organisms.
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Statistics in the Laboratory: The Limit of Quantitation
Thursday, January 18, 2018
Stanley N. Deming
In the two previous columns, we discussed the limit of detection LD, the minimum signal strength above which we can state with at least a given level of confidence (e.g., =99.95%) that analyte is ...
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Failure Analysis of Rubber Materials Using Pyrolysis-GC/MS
Wednesday, February 14, 2018
Rojin Belganeh
William Pipkin
Pyrolysis GC/MS has a wide variety of applications for identifying the organic composition of unknown samples by providing detail information about the compounds present in a sample.
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Measures to Alleviate Fume Hood Noise
Thursday, March 22, 2018
Kang Chen
Hongbo Zhang
Wenjun Zhang
The focus of this study was to reduce aerodynamic noise generated from fume hoods.
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Centrifugal Partition Chromatography: The Key to Green Preparative Chromatography
Monday, March 26, 2018
Gregoire Audo
Centrifugal partition chromatography is a sustainable solution for reducing the environmental impact of preparative chromatography while reducing production costs.
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Statistics in the Laboratory: Mandel Sensitivity
Wednesday, March 28, 2018
Stanley N. Deming
In the three previous columns, we discussed the limit of detection amount LDA, the minimum consistently detectable amount MCDA, and the limit of quantitation amount LQA.
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Routine Maintenance in ICP-MS: Critical When Monitoring Elemental Impurities in Pharmaceuticals
Tuesday, May 01, 2018
Robert Thomas
Routine maintenance is critical in ICP-MS, and this article provides guidance on keeping the sample introduction clean.
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Optical Efficiency Effects on Infrared Diffuse Reflection Spectroscopy Signal-to-Noise Ratio
Thursday, May 03, 2018
Dalia K. Maraoulaite
Robert L. White
This paper describes the impact of typical DRIFTS optical configurations on measurement SNR.
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How Visualization and Analytics Help Scientists Make Better Decisions Faster
Friday, May 11, 2018
Tom Oldfield
Robert D. Brown
Artificial intelligence. Machine learning. Automation. As these technologies become more widely adopted among life sciences companies in hopes of better innovation and faster drug development, it is ...
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Reducing Microplate Result Variability Using an AI-Based Approach
Tuesday, August 07, 2018
Paul Hensley
Artificial intelligence-based analysis of individual well patterns is a powerful tool with the potential to reduce the effect on assay variability due to surface chemicals.
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A Multiplatform Approach to Residual Pesticide Quantitation in Cannabis Flower for the California and Canadian Target Lists
Wednesday, August 22, 2018
Anthony Macherone
Rick Jordan
Dan Miller
Lilly Asanuma
Jean-François Roy
Peter J. Stone
This article describes methods to quantitate the California and Canadian pesticide lists in cannabis using two mass spectrometric platforms.
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Response Scene Chemical Confirmation with GC/MS
Friday, August 24, 2018
Philip Tackett
This article discusses a real-life scenario in which a person-portable GC/MS was used for on-site identification of an unknown substance that caused an adverse reaction.
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