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Title
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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A Novel Sensor for Uric Acid Based on an Electropolymerization Technique
Tuesday, July 02, 2013
Youyuan Peng
A molecularly imprinted polymer (MIP) film was fabricated using an electropolymerization technique after depositing carboxyl-functionalized multiwalled carbon nanotubes (MWNTs) onto a glassy carbon ...
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A Sensitive and Selective GC/MS Method for Analyzing Persistent Organic Pollutants Using a Novel Ionization Source
Friday, October 04, 2013
Jody Dunstan
Charge transfer chemical ionization (CI) was among the ionization types studied decades ago by researchers investigating fundamental Characteristics of chemical ionization. However, the technique was ...
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Analysis of Protosappanin B in Sappan Lignum by Capillary Zone Electrophoresis
Tuesday, September 23, 2014
Luzhi Sui
Xiangqian Hou
Xinmin Li
Dunqing Wang
Sappan Lignum, the dried heartwood of Caesalpinia sappan L, has been used as an herbal medicine since ancient times. Sappan Lignum promotes blood circulation; removes blood stasis; reduces swelling, ...
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Application of HPLC in the Synthesis of 2,4,5-Trifluorobenzoic Acid
Monday, April 20, 2015
Yun Wang
Wen-Yi Su
Yan-Li Xi
An important fine chemical intermediate for pharmaceuticals, agrichemicals and polymers, 2,4,5-trifluorobenzoic acid (2,4,5-TFBA) is synthesized from tetrachlorophthalic anhydride via hydrolysis, ...
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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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Automated Chromatographic Solid-Phase Extraction Using an Autosampler
Thursday, September 01, 2016
Mark Hayward
Jonathan Ho
Rick Youngblood
Matthew T. Hardison
Tom Moran
Kim Gamble
Solid-phase extraction (SPE) is a preferred tool for isolating target analytes from complex matrices because the availability of a diverse range of chromatographic sorbents enables targeted approaches...
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Automated Liquid Chromatography Method Development Design and Practice
Thursday, September 01, 2016
Gary W. Yanik
Method development bottlenecks can be minimized with good planning, setup, procedures and techniques.
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Automating Solvent Removal From Winterized Cannabis Oil Extract
Wednesday, August 31, 2016
Alison Wake
Jim Bilotta
A centrifugal evaporator is compared to a rotary evaporator for the batch concentration of winterized cannabis extract in ethanol.
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Bottle Liquid–Liquid Extraction Update: In Situ Water Sample Preparation
Tuesday, January 21, 2014
As first described in Ref. 1, an alternative liquid–liquid extraction technique was originally conceived, born, and cultivated in an environmental lab setting to enable holding time obligations to be ...
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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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Closing the Consumption Gap: Making GC More Accessible
Friday, November 04, 2016
Eric Denoyer
Paul Deitrick
Gas chromatography users agree on at least two things: that GC is a mature technology, and that the performance and features of instrumentation largely meet the application requirements for which GC ...
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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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Comparative QC Test Methods for Toothpaste Consistency
Tuesday, September 27, 2016
Robert McGregor
Important quantitative data can be obtained in the study of viscosity by measuring the consistency of toothpaste, i.e., thickness, ease of handling and ability to retain position, and observing the ...
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Comparison of Crystallization Behavior of Different-Colored Polypropylene Parts Using a Single DSC Experiment
Friday, January 20, 2017
James A. Browne
A compositional analysis may explain the reasons for variations in processing behavior, but is time consuming and expensive. As an alternative, straightforward differential scanning calorimetry (DSC) ...
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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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Computer-Assisted Structure Elucidation in Routine Analysis
Tuesday, January 26, 2016
Patrick Wheeler
Steve Hayward
Mikhail Elyashberg
The elucidation of unknown structures, especially those with novel moieties found in natural products, often results in initially incorrect published structures, which then require either exhaustive ...
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Considerations for Diffuse Reflection Spectroscopy
Thursday, September 01, 2016
Stacey Carrier
Reflected light allows us to perceive the world around us.
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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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Detecting and Managing Water Contaminants in the Laboratory
Thursday, October 16, 2014
Jim Keary
Water purity is a fundamentally important factor in many laboratories, yet it is frequently overlooked. Researchers use water in most lab processes, and poor water quality can quickly lead to ...
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