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17 September 2015 |
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LCGC TV: Advancing Chromatographic Methods
Kate Rimmer of the National Institute of Standards and Technology (NIST), discusses separations science research carried out at NIST — on how the molecular properties of the stationary phase correlate with chromatographic behaviour, the use of 2D LC for the quantitation of polycyclic aromatic hydrocarbons (PAHs), and more. |
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The Acid Test — More Useful Calculations for HPLC Eluent Preparation
Mobile-phase preparation for LC–MS requires careful consideration to ensure the correct pH values and concentrations are obtained. This blog installment details the difference between using volume percent and weight percent to make up 0.1% solutions of trifluoroacetic acid and the effect it has on the pH. |
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Photo Credit: Michael Clark/Getty Images |
Improving Hydraulic Fracturing Fluid Analysis Using the Kendrick Mass Defect
The Kendrick mass defect combined with liquid chromatography quadrupole time-of-flight mass spectrometry (LC–QTOF-MS) can offer a variety of benefits to analysts investigating groundwater contamination. The Column spoke to Thomas Borch from Colorado State University in Colorado, USA, about his work in this area to find out more. |
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Photo Credit: Brian Gordon Green/Getty Images |
GC–MS Analysis of Laser-Degraded Blue Tattoo Ink
Laser irradiation of blue tattoo ink can create toxic byproducts — including hydrogen cyanide (HCN) — according to new research published by scientists at the German Federal Institute for Risk Assessment. Pyrolysis gas chromatography–mass spectrometry (Py–GC–MS) was performed on samples of copper phthalocyanine blue to predict the decomposition products resulting from irradiation, as part of a wider on-going project assessing the safety of tattoo inks. |
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