Jeff Layne | Authors

Ion-pairing chromatography has traditionally been implemented with the addition of an ion-pairing reagent into the mobile phase. Here, an alternative method is presented, in which the ion-pairing reagent is deposited on column as a sample additive instead of in the mobile phase.

Reversed-phase HPLC analysis of histamine has been a challenge in the past due to the high polarity and poor retention. HILIC (hydrophilic interaction chromatography) offers a potential solution because of high polar analyte retention without the need of strong ion-pair reagents, which are not compatible with mass spectrometry (MS) detection and can cause signal suppression.

Urinary excretion profiling is a key element in the pharmokinetic characterization of new chemical entities (NCEs). Recent advances in ultra-high performance liquid chromatography (UHPLC) column technology offer improved results for liquid chromatography tandem mass spectrometry (LC–MS¬–MS) analysis, enabling rapid quantification of specific drugs and their metabolites in biological matrices.

Phenomenex

Heterocyclic amines (HCAs) are a class of compounds that are formed when amino acids from meat proteins react with glucose and creatine under high-temperatures, as is associated with frying or grilling over an open flame (1–3). Studies have correlated the consumption of high levels of HCAs with an increased risk of some forms of cancer.

The current state of economic affairs is tumultous; as the economy struggles to bounce back, companies across all industries are becoming more creative in finding ways to reduce costs without sacrificing the quality of their goods or services. According to a recent survey conducted by the Society of Forensic Toxicologists (SOFT), 64.5% of forensic labs surveyed are implementing changes, or plan to implement changes, as a result of limited resources.