SPE-HPLC Method for Acrylamide Detection in Potato Chips
On April 2002, researchers from Swedish National FDA and University of Stockholm first reported that acrylamide have been detected on many oil-fried and baked starchy foods, such as French fries, potato chips and so on, and the contents of acrylamide exceeded more than 500 times of the maximum permitted level of acrylamide in drinking water.
Determination of Benzo(a)pyrene in Vegetable Oil By Solid Phase Extraction
Benzo(a)pyrene is a strong carcinogen existing in vegetable oil, scorched food and deep-fried food. This research focused on a typical sample such as vegetable oil and successfully extracted Benzo(a)pyrene in vegetable oil by solid-phase extraction method.
The most convenient approaches for plasma sample cleanup
Using MAS or SLE to prepare plasma samples simplifies operation procedure. Unlike SPE, a single organic solvent is used for either MAS or SLE clean-up. A polar solvent such as ACN is used for MAS and a nonpolar solvent such as methyl tert-butyl ether is used for SLE. After the clean-up procedure, a generic concentration step is followed. The simplicity of MAS and SLE procedures can be easily adapted to high-throughput formats, such as multiple-well microtiter plates or sample arrays.
New enhanced extraction efficiency of pyrethroid pesticides in fish
New strategy to enhance the extraction efficiency of pyrethroid pesticides in fish samples using a modified QuEChERS (Quick, Easy, Cheap, Effective, Rugged and Safe) method, Anal. Methods, 4, 449-453; DOI: 10.1039/C2AY05681J
Cleanert TPT: Say Goodbye to Complex Tea Leaves Analysis
There are hundreds of pesticides in the tea and the residue level of pesticide in the tea brew is closely related with the water solubility of pesticide. The higher water solubility of pesticide showed higher extractive rate of pesticide during the brewing process from dry tea. With development of new technology, an efficient and sensitive method has been established for simultaneous determination of 653 pesticides in teas by GC/MS and HPLC/MS/MS.