In our July issue:
COLUMNS
LC TROUBLESHOOTING
Dealing with Distorted Peaks
John W. Dolan presents the potential causes for peak distortion in the first two peaks in the chromatogram. |
GC CONNECTIONS
FID: GC's Workhorse Detector
As the flame ionization detector (FID) approaches its 60th anniversary in 2017, this instalment examines the crucial role that it has played and continues to play for all types of gas chromatography (GC). |
SAMPLE PREPARATION PERSPECTIVES
Extraction Method Development Using RSM
In this instalment, an overview of response surface methodology (RSM) is presented and its application to developing extraction methods is discussed. |
THE ESSENTIALS
Gradient HPLC
In this tutorial from CHROMacademy, one particularly useful equation is presented that allows changes to be made to an analytical system to improve throughput or efficiency, while retaining the selectivity of the original high performance liquid chromatography (HPLC) method. |
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PEER-REVIEWED ARTICLES
HPLC Determination of Residual Primary Amines in Epoxy-Amine Adducts
Epoxy-amine adducts are an amine blend added to hot-sprayed aromatic isocyanate-containing polyurea sprays to change the curing time. Polyurea sprays are applied to metallic surfaces to create an anti-corrosive coating and their curing time is influenced by the amine content. Amine content is normally determined using titration, but high performance liquid chromatography (HPLC) also has a high potential. Based on previous studies, HPLC with UV detection analysis could be performed for this purpose, if the samples are in their derivatized form. The goal of this study was to find an optimal derivatization method and to validate it to determine commercially available epoxy-amine adducts. |
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UPCOMING WEBCAST
Editors' Series: Part 2: Application of Two-Dimensional Liquid Chromatography in Pharmaceutical Analysis
Tuesday, July 28, 2015 at 10 am EDT/ 3 pm BST/ 4 pm CEST
Register Here >>
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ON-DEMAND WEBCAST
Editors' Series: Part 1: Theory and Practice of Two-Dimensional Liquid Chromatography
Register Here >>
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