Peter Pellegrinelli, Applications Specialist at Advanced Materials Technology (AMT) explains the complexity of oligonucleotide separations due to the unique chemical properties of these molecules. Issues such as varying length, sequence complexity, and hydrophilic-hydrophobic characteristics make efficient separations difficult. Separation scientists are addressing these challenges by modifying mobile phase compositions, using varying ion-pairing reagents, and exploring alternative separation modes like HILIC and ion-exchange chromatography. Due to these complexities, AMT has introduced the HALO® OLIGO column, which offers high-resolution, fast separations through its innovative Fused-Core® technology and high pH stability. Alongside explaining the new column, Peter looks to the future of these separations and what is next to come.
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Gas chromatography–mass spectrometry (GC–MS) reveals a four-stage polycyclic aromatic hydrocarbons (PAH) breakdown in oil sludge co-composted with manure.
In this third part of " Conversations with Michael Dong," a series on fundamentals of HPLC in pharmaceutical analysis, LCGC International’s "Perspectives in HPLC" column editor discusses the retention mechanism of hydrophobic interaction.
LCGC International spoke to David Hage, Sanduni Heenkenda, and Zoe Zingler of the University of Nebraska-Lincoln about how green chemistry principles are reshaping affinity chromatography.