March 2011


March 2011	Subscribe	Go to Application Notebook

	Multiresidue Pesticide Analysis in Green Tea by a Modified QuEChERS Extraction and Ion Trap GC–MSⁿ Analysis The Thermo Scientific ITQ 700 GC-ion trap MS was thoroughly evaluated and showed excellent accuracy at low concentrations for a large number of pesticide residues analyzed in green tea. Using the instrument's MSⁿ functionality allows the user to identify, confirm, and quantify in one analytical run.
	PCDD/F Screening at the Maximum Residue Level for Food Safety Analysis Using Highly Selective Triple Quadrupole GC—MS-MS This paper presents a trace level screening method for polychlorinated dioxins, furans, and PCBs at low levels in difficult matrix samples at the relevant maximum residue level for foodstuff.
	Rapid Analysis of Pesticides in Difficult Matrices Using GC—MS-MS This application note describes the analytical methodology for a fast multiresidue pesticide determination in a difficult matrix using the QuEChERS extraction/clean-up procedure with the Thermo ScientificTSQ Quantum XLS GC—MS-MS system.
	Multiresidue Pesticide Analysis in Rice by a Modified QuEChERS Extraction and Ion Trap GC–MSⁿ Analysis Most recently formulated pesticides are smaller in molecular weight and designed to break down rapidly in the environment. This study determined the linear ranges, quantitation limits, and detection limits for a list of pesticides that are commonly used on rice crops.
	Fast GC—MS-MS for High Throughput Pesticides Analysis A fast GC—MS-MS analytical approach is presented to meet a requirement for matrix robustness with high sample throughput. With the described method, very good linearity, sensitivity, and robustness were obtained with very limited breakdown phenomena and without any tailing chromatographic peaks.
	Analysis of Regulated Pesticides in Drinking Water Using Accela and Equan This application note describes the implementation of Fast-HPLC, coupled with a method for online sample cleanup and analysis that provides a significant time savings over conventional methods.
	Simple and Rapid Analysis of Chloramphenicol in Milk by LC—MS-MS Chloramphenicol (CAP) is a broad-spectrum antibiotic with serious side effects on humans and has been banned for use in all food-producing animals by the European Union (EU), USA, and Canada. This application note details a rapid and sensitive LC—MS-MS method for analyzing chloramphenicol in milk.
	Analyzing Phenolic Pollutants in Water Using UHPLC This study demonstrates analysis optimization by variation of column chemistry and the viability of reducing stationary phase particle size to increase analysis speed, while maintaining separation parameters and increasing sensitivity.
	Metabolomic Analysis of Green and Black Tea Extracts Using an LTQ Orbitrap XL Hybrid Linear Ion Trap Mass Spectrometer This application note presents an analytical metabolomic workflow encompassing data acquisition, discovery of differentially abundant metabolites, and metabolite identification.
	Quantitative Analysis of Catechins in Tea by UHPLC/UV This analysis features robust UHPLC/UV methods for high-throughput screening and quantitation of catechins and other phenols in tea matrices.

Contact Editor - Meg Evans

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