In our September issue:
COLUMNS
Molecular Spectroscopy Workbench
Headspace Raman Spectroscopy
David Tuschel
Most of us perform Raman spectroscopy with materials in the condensed phase — liquids or solids. But sealed containers of many compounds have volatilized molecules in the headspace between the condensed phase and the container seal, providing a nice opportunity to use Raman methods for their analysis. Here, we explain how — starting with the example of beer.
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Focus on Quality
What Do You Mean by Good Documentation Practices?
R.D. McDowall
A closer look at the U.S. Pharmacopeial Convention’s (USP) draft general chapter <1029> on good documentation practices reveals what you need to know — and do. Read more >> |
Chemometrics in Spectroscopy
Units of Measure in Spectroscopy, Part II: What Does It Mean?
Howard Mark and Jerome Workman, Jr.
Now that we have shown the relationships between different units for concentration, we demonstrate their effects on the data we collected and used for our examples. What are the ramifications and consequences of these findings? Read more >> |
Spectroscopy Spotlight
Improving Drug Formulation with Raman and IR Spectroscopy
The physicochemical properties of drugs are very diverse and often
challenging to analyze. By using Raman and IR spectroscopy to study drugs and drug excipients — Lynne Taylor of Purdue University is seeking ways to improve drug formulation.
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PEER-REVIEWED ARTICLES
How Trace Elemental Analysis Provides Important Insight into Wine Chemistry
Helene Hopfer, Jenny Nelson, Thomas S. Collins, Hildegarde Heymann, and Susan E. Ebeler
The quality of wine depends not only on where the grapes are grown, but on how the wine is produced and stored. ICP–MS studies can reveal important information to improve the stability and shelf life of some of our favorite beverages.
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Sulfobutyl Ether-β-Cyclodextrin–Assisted Fluorescence Spectroscopy for Determination of L-Amlodipine in Tablets
Lin Yang, Jiaqi Xie, Xiaoming Deng, Shenzhi Lai, and Xiaoming Chen
Sensitive and specific methods for quantitative determination of the calcium channel blocker L-amlodipine are necessary to ensure product quality. This validated spectrofluorometric method offers improved simplicity and sensitivity. Read more >>
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Miniature NIR Spectroscopy and Development of NIR Methods for Blend Analysis
Thursday, October 16, 2014
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