October 2012 Subscribe Go to Application Note Library Determination of Multi-Pesticide Residues in Dried Tea Samples Using an Optimized Extraction/Cleanup Regime and the Agilent 7000 Series Triple Quadrupole GC–MS System Tomas Cajka, Veronika Bachanova, Lucie Drabova, Kamila Kalachova, Jana Pulkrabova, and Jana Hajslova, Agilent Technologies A novel sample preparation regime has been developed for the extraction and cleanup of dried tea samples. The sample preparation regime, based on the QuEChERS method effectively extracts pesticides from the tea matrix.   LC–MS-MS Analysis of Pesticide Residues in Apple Using Agilent Chem Elut Cartridges Andy Zhai, Agilent Technologies A validated method for pesticide residue analysis in apples uses Agilent Chem Elut cartridges and a Poroshell 120 LC column. The 5 ng/g limit of quantitation is well below MRLs.   Analysis of Pesticides in Chammomile and Ginger Using tMRM Thomas Glauner, Agilent Technologies This application note describes the use of triggered MRM (tMRM) for the analysis of pesticide residues in chamomile and ginger extracts. The analysis is performed using the Agilent 1290 LC system coupled to a 6460 Triple Quadrupole LC–MS. Two examples were explored where compounds were quantitated and confirmed with library matching in a single analytical run to avoid false positive identifications. Determination of Fatty Acid Methyl Esters (FAMEs) in Olive Oil Using Automated Sample Preparation Enrique Longueira and Jose Pineda, Agilent Technologies There are different ways to analyze fatty acids (Fas) in oil. This application note shows how to analyze them after a base-catalyzed reaction and the advantages of preparing the samples with the Agilent 7696A Sample Prep WorkBench. Agilent Mycotoxin Application Guide Agilent Technologies, Inc. In this guide, you’ll find MS-MS spectra and MRM chromatograms for the most abundant ions, as well as significant fragment ions and patterns for each compound at different MS-MS collision energies.   Rapid Analysis of Crude Fungal Extracts for Secondary Metabolites by LC–TOF-MS a New Approach to Fungal Characterization Hamide Z. Senyuva, Agilent Technologies A novel approach to studying the production of secondary metabolites by fungi using LC–TOF-MS has been developed. Analysis of Phytoestrogens in Soy Milk by GC–MS-MS with the Agilent 7000 Series Triple Quadrupole GC–MS Imma Ferrer and E. Michael Thurman, Agilent Technologies An analytical method for the identification of eight plant phytoestrogens (biochanin A, coumestrol, daidzein, equol, formononetin, glycitein, genistein, and prunetin) in soy milk was developed using gas chromatography tandem mass spectrometry (GC–MS-MS). Arsenic Speciation Analysis in Apple Juice Using HPLC-ICP-MS with the Agilent 8800 ICP-QQQ Mina Tanoshima, Tetsushi Sakai, and Ed McCurdy, Agilent Technologies Five arsenic species including the toxicologically relevant inorganic forms As (III) and As (V) were determined at low- and sub-µg/L concentrations in commercially available apple juice, using an Agilent 1290 Infinity LC coupled to an Agilent 8800 ICP-QQQ. A Reliable and Routine GC–MS-MS Method for the Determination of Chemical Contaminants in Marine Shellfish Praveen Kutty, Anthony Gravell, and Kathleen Thompson, Agilent Technologies A sample preparation method based on a modified QuEChERS extraction has been developed along with a GC–MS-MS method for the determination of selected organo-chlorine pesticides, polyaromatic hydrocarbons, and polychlorinated biphenyl congeners. Determination of Dioxin-Like and Non-Dioxin-Like Polychlorinated Biphenyl Congeners in Foodstuffs Prof. Dr. Peter Fürst, Dr. Thorsten Bernsmann, and Dominik Baumeister, Agilent Technologies Two methods have been developed on the Agilent 7000 GC Triple Quadrupole GC–MS system for the analysis of polychlorinated biphenyls (PCBs) in foodstuffs and animal feed.