ResourceLab Automation
Quantitation of 250 Pesticides in Fruit Juices with Positive/Negative Switching LC-MS/MS
14 Nov 2014This study was carried out using the Bruker EVOQ Elite liquid chromatography-triple quadrupole mass spectrometer (LC-MS/MS) in multiple reaction monitoring (MRM) mode to quantify 250 pesticide compounds in apple, cranberry, white grape, orange and vegetable juice. A single method performed automatic positive and negative ion switching for over 500 MRM transitions in 18 minutes including re-equilibration, considerably faster than separate positive and negative quantification methods. With fast and straightforward ‘dilute-and-shoot’ sample preparation, good linearity, sensitivity and response factor relative standard deviation (RSD) were achieved throughout.
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LC-MSLC-MS (liquid chromatography-mass spectrometry) systems and equipment are used for separation and quantitative analysis of complex mixtures, combining liquid chromatography and mass spectrometry. Quantify proteins, contaminants, pesticides or screen for drug metabolites with a high level of sensitivity. LC-MS systems and equipment include reverse phase, normal phase and specialized columns integrated with various MS detectors such as time-of-flight (TOF), quadrupole, orbitrap or ion trap mass analyzers. LC-MS/MS instruments equipped with a qTOF or triple quadrupole analyzer give greater sensitivity and resolving power to your analysis. Find the best LC-MS equipment in our peer-reviewed product directory: compare products, check customer reviews and receive pricing direct from manufacturers.Robotic InstrumentsRobotic instruments can be used for high-throughput automation of many lab processes. Such processes use instruments for assays like cell based assays and ELISA, for sample preparation like shakers, centrifuges and incubators, and for analysis such as sequencing and western blot analyzers. Useful features of robotic instruments include speed, reproducibility, barcode readers, software and automation.Food and Beverage AnalyzersFood and Beverage Analyzers are commonly used to provide information about the chemical composition, structure and physical properties of food materials.Triple Quadrupole MsFood TestingFood testing refers to a variety experiments including PCR, mass spectrometry, processing, QuEChERS, analyzing and Kjeldahl.