Quantitative Analysis of Explosives by TD–GC–MS

Per- and polyfluoroalkyl substances (PFAS) are exceptionally versatile chemicals and have seemingly endless applications. Due to their persistent nature; prevalence in blood, food and environment; and emerging toxicity, there is a significant concern for their presence in the human body. Analysis is especially complicated due to background contamination in laboratory supplies and system. This paper will discuss sample preparation and LC-MS/MS analysis of an expanded panel of PFAS compounds in serum.

This application note examines the selectivity differences between three L1 columns. The CORTECS Premier C18, CORTECS Premier C18+ and CORTECS Premier T3 Columns were used to separated paracetamol and its impurities using EP monograph conditions.

This non-IP-RP method, using ammonium bicarbonate as mobile phase additive, is highly sensitive and suitable for the bioanalysis of therapeutic oligonucleotides.

In this work the development of two key attributes of the 5um CORTECS Columns is examined. First column efficiency is compared across CORTECS and other solid-core 5 μm columns. Next scalability from sub-2 μm to 5 μm particles is examined between the CORTECS Column lines and competitive column lines. It was found that CORTECS columns have higher efficiency compared to other solid-core columns and that CORTECS particles are fully scalable.