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Title
Theory and Practical Applications of Automation Solutions in Analytical Measurements
Wednesday, July 24, 2019
Heidi Fleischer
Kerstin Thurow
Automated systems for sample preparation and analytical measurements must follow special protocols due to their complex process structure with multiple subprocesses.
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Pesticide Analysis in Cannabis: Extracting the Pesticide From the Flower
Monday, April 29, 2019
Michael Steinert
The QuEChERS and SPE methods are the most popular methods for the cleanup phase when analyzing pesticides in cannabis.
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Quantitative Analysis of Cannabinoids in Edibles Using Thermal Desorption-GC/MS
Monday, April 08, 2019
Rojin Belganeh
William Pipkin
Terry Ramus
A simple, rapid, and accurate thermal desorption-GC/MS technique is described for the determination of cannabinoids
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What Are Emerging Contaminants and Why Are We Concerned?
Friday, April 05, 2019
William Lipps
The term “compounds of emerging concern” (CEC) is used to identify chemical contaminants that have no regulatory standard, have been found in environmental samples, and have potentially adverse ...
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Cloud-Point Extraction/Graphite Furnace Atomic Absorption Spectrometry for the Determination of Trace Rhodium in Water Samples
Thursday, March 14, 2019
Quan Han
Xiaohui Yang
Yaping He
Yanyan Huo
Jiangyan Wu
Longhu Yang
Huan Wang
A method for the determination of ultratrace rhodium by cloud point extraction coupled with graphite furnace atomic absorption spectrometry has been developed.
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Considerations for Replacing Deuterium Lamps in HPLC Systems
Thursday, March 14, 2019
Robert Pritchard
Mark Shapiro
The decision to replace a deuterium lamp for an HPLC system will depend on the evidence and the risk-to-reward ratio.
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Solving Glass-Cleaning Challenges in Short-Path Distillation of Cannabis Oils
Wednesday, December 19, 2018
Robert Sandor
Brian Maltais
Ultrasonic cleaning replaces potentially dangerous caustic or solvent baths and the associated disposal challenges.
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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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Losses of Proteins in Gradient HPLC
Friday, August 24, 2018
Steven C. Goheen
Jacqueline Hilsenbeck-Fajardo
Gradient elution of biopolymers by HPLC is an effective method for separation and quantitation.
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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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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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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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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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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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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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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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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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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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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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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.
Read More
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