Analytical Methods

Articles

In this study, Tween 20 amounts were increased in 1% increments while monitoring two different factors. 

Optimal Dilution of Polysorbate (Tween) 20 for the Determination of Enterobacteria and Total Yeast and Mold on Cannabis Concentrate 

is a Full Professor and Shimadzu Distinguished Professor of Analytical Chemistry in the Department of Chemistry & Biochemistry at The University of Texas (UT) at Arlington.

The data presented here document the phytochemical composition of a large dataset of Group III cannabis cultivars and allow for the identification of distinct sub-classes.


Differentiation of Group III Cannabis Cultivars into Novel Sub-Classes

This article explores five common cannabis tests and the benefits of incorporating filter plates.

Accelerating Cannabis Testing: How Filter Plates Increase  Throughput and Productivity

Patricia Atkins is a Senior Applications Scientist with SPEX CertiPrep and a member of both the AOAC and ASTM committees for cannabis.

We finish looking at liquid chromatography with a deeper examination of the mechanics, physics, and chemistry of different spectrometers that are used in analytical laboratories.

Looking with Light: Understanding Spectrometry

This technical piece is focused on the separation of the individual enantiomers of each compound mentioned above, as well as the combined separation of the compounds from each other for a fast, reliable quantification.

The Separation of Several Minor Cannabinoids via Chiral HPLC

Brian C. Smith, PhD, is Founder, CEO, and Chief Technical Officer of Big Sur Scientific. He is the inventor of the BSS series of patented mid-infrared based cannabis analyzers. Dr. Smith has done pioneering research and published numerous peer-reviewed papers on the application of mid-infrared spectroscopy to cannabis analysis, and sits on the editorial board of Cannabis Science and Technology. He has worked as a laboratory director for a cannabis extractor, as an analytical chemist for Waters Associates and PerkinElmer, and as an analytical instrument salesperson. He has more than 30 years of experience in chemical analysis and has written three books on the subject. Dr. Smith earned his PhD on physical chemistry from Dartmouth College. Direct correspondence to: 

A number of misconceptions people have about how to test, what to test, and when to test in the cannabis industry are dispelled.

Dispelling Cannabis Analysis Myths, Part I

A systematic literature review to identify and compare analytical methods used for the determination of cannabinoids in different matrices using LC-based systems.

Analytical Techniques Used for Analysis of Cannabinoids

This work describes an inductively coupled plasma-mass spectrometry method for the analysis of various heavy metals in cannabis sativa plant material.

The Big Four Heavy Metals in Cannabis: Sample Preparation and Analysis via ICP-MS

From simple separations to detailed wavelength analysis, we examine the important concepts and techniques needed to make liquid chromatography work its best in the laboratory.

Looking with Light: Understanding the Principles of Analytical Liquid Chromatography

This article takes a look at the major atomic spectroscopy techniques and compares their performance characteristics and in particular examines the limits of quantitation for the four heavy metals (Pb, As, Cd, and Hg) currently being regulated in cannabis and hemp by most states in the US.