Application of core-shell technology to the USP assay for ibuprofen to reduce analysis time and increase sample throughput and productivity, while improving the sensitivity of the assay for the determination of ibuprofen related compound C, a known degradation product with adverse health effects.
The method described employs a triple quadrupole mass spectrometer equipped with hyperbolic quadrupole rods for increased selectivity to prerform a trace level screening method for PCDD/Fs and PCBs and follows the well-established United States Environmental Protection Agency (US EPA) Method 1613A.
The QuEChERS method of food sample preparation was used in conjunction with comprehensive two-dimensional gas chromatography time-of-flight mass spectrometry (GCxGC–TOFMS) to successfully identify PAH contaminants spiked in liquid commercial infant formula.
AGPC column and organic solvents are used to selectively pass large macro molecules such as lipids, resins, waxes, and other compounds from sample extracts while retaining the smaller target analyte molecules in the pores of the gel.
Aminopolycarboxylate chelating agents form stable complexes with transition metals, thereby increasing metal solubility, preventing metal-catalyzed reactions, and removing heavy metal contamination in soil remediation.
This application note demonstrates the extraction of sour cream, cream cheese, coffee creamer, heavy whipping cream, and low fat milk using an ASE 350 Accelerated Solvent Extractor technique developed by Dionex and compares results to the traditional Mojonnier technique.
A modified QuEChERS-type extraction method is used with an additional concentration step to detect 38 anthelmintic (nematicides, flukicides, endectocides) drug residues, consisting of benzimidazoles, avermectins, and flukicides in milk. UHPLC–MS-MS instrumentation detects most analytes at
Since the gas flow required for the separation step in gas chromatography is frequently lower that that required to optimize the detection, nitrogen is used as a make-up gas to increase the gas flow for detection.
With Americans becoming increasingly health conscious and concerned with their exposure to chemicals, businesses have made movements to create more products that are safer for the consumer and the environment.