Core-Shell Performance With 100 % Aqueous and pH 1-12 Stability
June 5th 2015Enjoy the unique Kinetex EVO C18 selectivity now in 1.7µm and 2.6µm particle sizes for your UHPLC work. This extremely versatile core-shell phase offers the high performance you crave, a unique all-purpose selectivity, and ruggedness you can depend on.
Core-Shell Performance With 100 % Aqueous and pH 1-12 Stability
June 5th 2015Enjoy the unique Kinetex EVO C18 selectivity now in 1.7µm and 2.6µm particle sizes for your UHPLC work. This extremely versatile core-shell phase offers the high performance you crave, a unique all-purpose selectivity, and ruggedness you can depend on.
Extraction and Analysis of Acrylamide from Coffee
March 18th 2015Cooking at high temperatures causes a chemical reaction between certain sugars and asparagine which causes acrylamide formation. In this technical note, we explore how to use Novum™ SLE tubes to clean up a coffee matrix in order to quantitate known acrylamide levels. The recovery is especially significant when you consider the polar nature of the acrylamide (LogP -0.27). In addition to high recoveries (>90 %), the low values for the standard deviation and %CV indicates method reproducibility.
Extraction and Analysis of Acrylamide from Coffee
March 18th 2015Cooking at high temperatures causes a chemical reaction between certain sugars and asparagine which causes acrylamide formation. In this technical note, we explore how to use Novum™ SLE tubes to clean up a coffee matrix in order to quantitate known acrylamide levels. The recovery is especially significant when you consider the polar nature of the acrylamide (LogP -0.27). In addition to high recoveries (>90 %), the low values for the standard deviation and %CV indicates method reproducibility.
Enhanced Results of Diesel Range Organics Analysis with High-Temperature Gas Enhanced Chromatography
June 1st 2012Diesel range organic (DRO) compounds have boiling points similar to diesel fuel (C10–C28), ranging from 170–430 ?C. These heavy compounds are amenable to GC-FID analysis; however, important considerations should be taken to ensure reproducible results over repeated injections.
Rapid LC–MS-MS Analysis of Heterocyclic Amines in Salmon
June 1st 2012Heterocyclic 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.
Effective Cleanup and Analysis of Metronidazole from Foaming Facial Cleanser
June 1st 2012When working with complex matrices such as personal care products, sample preparation is perhaps the most difficult step of the analysis process. By utilizing a targeted sample preparation technique, such as ion-exchange SPE, analysis can be significantly improved as compared to less targeted techniques such as liquid-liquid extraction.
Rapid and Streamlined Screening of Barbiturates
June 1st 2011Barbiturates are a class of antidepressants whose abuse and addiction by recreational users has become a widespread problem (www.nlm.nih.gov). In our work we strived to streamline the barbiturate screening process to provide a fast, cost-effective, and reproducible method from start to finish for forensic labs who are involved in high-throughput processing.
Improved Analysis of Preservatives in Cosmetics Using a Unique C18 Core-Shell Phase
June 1st 2011This study evaluates the performance of a C18 core-shell phase that incorporates a C18 ligand with iso-butyl side chains. The Kinetex? XB-C18 HPLC/ UHPLC column delivers a fast and effective separation of several common preservatives in cosmetics.
Advantages of Multi-Pesticide Screening by GC–MS
June 1st 2011Due to the increasing number of toxic pesticides being used throughout the world, a robust method for positively identifying low levels of multiple classes of pesticides is required. A Zebron? ZB-MultiResidue? column is used with GC–MS to identify over 100 common pesticides.