Our QSight® LX50 UHPLC integrates seamlessly to our QSight Triple Quad LC/MS/MS and its Simplicity™ software to deliver the highest levels of performance from sample handling through data collection and reporting. The system includes three key technologies that help optimize your workflow and enable high productivity.
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For the QSight triple quad LC/MS/MS, we’ve paired the industry’s most flexible mass spectrometer with the equally capable QSight LX50 UHPLC system, delivering all the sensitivity and specificity you need for demanding applications such as pesticide-residue and nutritional-component analysis. And with its robust design and carryover-elimination capabilities, the system is perfect for a host of other applications in the food and environmental arenas.
A New, Sensitive Method for Lignan Metabolite Detection of Flaxseed-Fed Mice Using LC/MS/MS
Testing for the levels of pesticide and mycotoxins in cannabis is important to ensure consumer safety and quality control. In this work, the PerkinElmer application development team analyzed all 66 pesticides (including very hydrophobic and chlorinated pesticides typically analyzed by GC-MS/MS) and five mycotoxins spiked in cannabis flower extracts well below the action limits specified by the state of California. A LC-MS/MS instrument was used with ESI and APCI sources and a simple solvent extraction method with excellent recoveries for all analytes in acceptable range of 70-120%.
Acrylamide is a probable carcinogen organic compound that is found in some foods that are cooked at elevated temperatures. It’s origins are due to the condensation of the amino acid asparagine and glucose as part of Maillard reaction. In 2002, Acrylamide was found to be present in french fries and baked bread. This compound has now also been found in some other food stuff like coffee, black olives, dried pears, and peanuts. As a result the and World Health Organizations have promptly limited its presence for human consumption.
Aflatoxin B1 is considered to be the most genotoxic of the mycotoxins, and, when ingested by cows, is converted to aflatoxin M1 which has been shown to cause liver cancer in certain animals.
Due to the large number of pesticides potentially used in rice production, the use of multi-residue methods capable of determining many pesticides in one single run is the most efficient approach. In this study, a fast, sensitive and selective multiresidue method has been developed for analysis of over 200 pesticides in rice samples by coupling a modified QuEChERS extraction method with LC-MS/MS. Using time-managedMRM™ in the QSight® triple quadrupole mass spectrometer, the optimum dwell time of multiple MRM transitions can be generated automatically for the targeted analytes.
Mycotoxins produced by fungi as toxic secondary metabolites, leave grains, maize and cereals particularly vulnerable. With this in mind, and considering that an estimated 25% of all crops show some signs of mycotoxin contamination, many countries have established regulatory guidelines for maximum mycotoxin limits in not only feed and grain, but also in processed food products.
Per- and polyfluoroalkyl substances (PFAS) are man-made carbon-chain based compounds that have been widely used in commercial and industrial products such as fire-fighting foams, water proofing treatments for clothing and furniture, nonstick cookware, and paper. PFAS’ are thermally and chemically stable, and resistant to degradation, making them ideal for many applications, but also allows the chemicals to bioaccumulate in the environment, leading to a designation as a contaminant of concern to human health and wildlife.
US EPA promulgated SW-846 Method 8327 for the analysis of PFAS in four non-potable aqueous matrices using external standard calibration and liquid chromatography/tandem mass spectrometry (LC/MS/MS). In this application note, a fast and robust method for the analysis of all analytes listed in EPA Method 8327 is presented, using a PerkinElmer QSight® LX50 ultra high-performance liquid chromatography (UHPLC) system coupled with the PerkinElmer QSight 220 triple quadrupole mass spectrometer.
Liquid chromatography-tandem mass spectrometry (LC/MS/MS) has become the method of choice for pesticide. The state of Oregon has issued regulatory limits for 59 pesticide residues in both cannabis flower and concentrates, while other states have come up with their own lists of pesticide residues relating to medical marijuana and cannabis testing.
Analysis of target pesticide residues in berries using a unique laminar flow UHPLC-ESI-MS/MS
Water-soluble vitamins (WSV), comprised primarily of the vitamin B complex, are essential ingredients in many foods, particularly in infant formulas. When analyzing fortified foods, this can be particularly challenging due to the wide range in concentration of vitamins, in keeping with daily allowances. This application note presents a LC-MS/MS method for the efficient, routine and robust chromatographic analysis of B-vitamins in infant formula. Eight water soluble vitamins over a wide concentration range were identified and quantified in under four minutes. The results showed excellent retention time repeatability and the method was able to detect vitamin B12 at 0.5 ppb, well below the expected level of ~2 ppb in infant formulas.
Since 2003 the usage of azo and non-azo dyes for food coloring has been declared as illegal by many of the food international authorities across the globe. That is because these substances such as Sudan I,II,III,IV and Rhodamine B, are potentially carcinogens and genotoxin in nature. As of now, no official methods have been published for the detection of illegal dyes however, the most used analytical technology is GC-MS or HPLC coupled with UV or MS detection.
Fipronil is a broad-spectrum phenylpyrazole insecticide almost used to protect corps from insects but also to treat lice and ticks in chickens. The U.S. EPA classified fipronil as Group C, possible human carcinogen, therefore International organizations defined admissible limits for the fipronil usage which in egg is of 5 µg/L4. LC-MS/MS technology can provide a robust and reliable method to detect such a contaminant in food.
Polycyclic aromatic hydrocarbons (PAHs) can contaminate foods during smoking, heating, and drying processes that allow combustion products to come into direct contact with food. They can also enter food supply chains through contaminated air and water, and accumulate in various food chains. Regulations are in place to monitor PAHs levels in foods; the EU set a stringent maximum residue limit (MRL) for BaP in muscle meat of smoked fish and smoked fishery products at 2 µg/kg.2 In this study, seafood samples were prepared using a QueChERS extraction method followed by a dispersive solid-phase extraction clean-up step. The samples were subsequently analyzed by coupling a UHPLC system with a triple quadrupole mass spectrometer.
In apiculture, sulfonamides are the most commonly used antibiotics to treat American and European Foulbrood, a type of disease that infects bees. This application note demonstrates how QSight 200 System can provides a very sensitive and robust platform for the analysis of sulfonamides in honey.
Antibiotics are used in dairy cattle for different treatments, but it leads to accumulation of these residues in milk. Presence of such residues in human food can be responsible for allergic reactions, toxic effects and develops resistant strains of bacteria. To protect consumers, regulatory agencies in the European Union published several official documents to regulate the control of veterinary drugs. Council Directive 96/23/EC establishes the veterinary residue control in food producing animals. In India, as per FSSAI (gazette notification dated 20th July 2018) and EIC (RMP for Aquaculture, Egg, Honey, Milk Poultry etc.) it is a mandate to do the analysis of antibiotics. EIC and FSSAI both have maximum residue limits (MRLs) for various antibiotic residues for food matrices from animals. It is essential to test milk for residues of sulfonamides considering safety and prevent exposure of consumers to veterinary drugs. In this work, we present a fast and sensitive LC-MS/MS method for the quantitative analysis of sulfonamides antibiotics in milk.
In this work, we present a fast and sensitive LC/MS/MS method
Glyphosate is a very polar compound with high solubility in water and low solubility in most organic solvents and, as such, requires methods based on derivatization which are labor-intensive and time consuming. The present work shows a 12 minute LC-MS/MS method with an amino-based column to analyze glyphosate and other related polar compounds in underivatized states, with exceptional selectivity and sensitivity.
It is very well known that Black pepper is a complex matrix that requires a proper extraction and clean-up method for interferences. In this study, a fast, sensitive and selective multi-residue method has been developed for analysis of over 136 pesticides in Pepper samples by coupling a modified QuEChERS extraction method with LC/MS/MS. Using time-managed- MRM™ in the QSight™ triple quadrupole mass spectrometer, the optimum dwell time of multiple MRM transitions can be generated automatically for the targeted analytes. This not only saves time in method development but also improves data quality and analytical performance of instrument.
EU water policies are reevaluated on a consistent basis to ensure water sources do not contain contaminants at levels above regulatory levels. As regulations are reviewed, regulatory limits are often lowered, and analytical techniques must adapt to meet the new stringent requirements.
In this application note, an LC/MS/MS method for the determination of 214 regulated contaminants is presented. The direct injection method, utilizing a PerkinElmer® QSight 420, is optimized with the use of dual ionization sources (APCI and ESI). Additionally, an inter-laboratory study is detailed to illustrate the method transferability between instruments, utilizing the compound Atrazine.
Pesticides are employed in the growing of crops to prevent damage from a number of pests and fungi. When crops are grown to produce feed for livestock, there is a potential for pesticides residues to remain on the feeding stuffs, posing a risk to the livestock ingesting them. Pesticide residues are regulated by a number of governmental agencies, necessitating analytical methods that are robust enough to analyze complex matrices for a variety of analytes, while also being sensitive and selective enough to meet stringent regulations. In this application note, a fast, sensitive, and selective multi-residue method has been developed for the analysis of 94 pesticides in animal feeding stuffs, with reporting limits below European Commission MRLs of 0.01 mg/kg.
The use of cannabis concentrates and CBD products (edibles, topicals, vape products, etc.) has increased in popularity as new regulation has been passed legalizing medicinal and recreational use in a number of states and provinces. Testing to ensure that pesticide and mycotoxin levels in cannabis products are below regulatory levels is critical, however, the cannabis concentrate matrix presents many analytical challenges including higher sample matrix effects and an increased concentration of cannabinoids in the sample.
In this application note, an LC/MS/MS method for the analysis of 66 pesticides (including hydrophobic and chlorinated pesticides typically analyzed by GC/MS/MS) and five mycotoxins in a cannabis concentrate matrix is presented. Utilizing a QSight® 420 LC/MS/MS instrument with dual APCI and ESI sources, the analysis yielded excellent recoveries and detection limits below those specified by the state of California cannabis regulations.
Aniline and aniline derivatives are widely used as raw materials and intermediates in the polymer, rubber, dye, pesticide and pharmaceutical industries. Unintended releases of aniliane or its derivatives into the environment pose a serious threat, with release possible during any stage of production, storage, transport, use, or disposal. Therefore, it is important and necessary to develop fast, simple, sensitive, selective and efficient methods for the determination of aniline and its derivatives in drinking and environmental waters. The aim of this study is to develop an LC/MS/MS method for rapid analysis of aniline and its derivatives in water samples by direct injection, without using time consuming sample preparation steps.
This application note presents a sensitive and reliable LC/MS/MS method using the PerkinElmer QSight
Wine can often contain pesticides and fungicides that have been sprayed on the fruits during their growing period. In addition to these contaminants, wine can also contain additives that have been deliberately added during production processes to improve its flavor and color. In this study, a simple and sensitive LC-MS/MS method has been developed and applied for the determination of both pesticides and pigments in a single analytical run.
A simple and sensitive method for the simultaneous determination of plant growth regulators
In this study, the QSight LC-MS/MS system was used to evaluate the potential of eliminating sample preparation for trace level pesticide analysis in a complex sample such as wine. We injected undiluted red and white wine samples into the mass spectrometer and studied reproducibility in analysis of the spiked pesticides over 200 injections. The instrument showed excellent reproducibility with minimal signal drift during the duration of the study (over a week), confirming the robustness of the QSight mass spectrometer.
Feed milling today is a complex business, and agribusinesses both large and small need to balance the nutritional and safety needs of livestock with availability of raw ingredients and their seasonality and variability. Add to that the valuable supplementation and medication that millers supply, and it’s clear: you’re creating a complete nutritional delivery system, not just a simple mix of grains.
Pesticides can adversely affect human health through the food we consume but can also leach into soil and groundwater and impact us through the environment. To keep up with a complex and constantly changing regulatory environment, your pesticide analysis solution needs to keep up with your burgeoning sample load.
Whether you’re a lab manager or a bench chemist, you know firsthand how things are changing quickly in food and environmental analysis. And your lab needs to change to keep pace.
Our modular Simplicity 3Q™ software is ideal for acquiring, quantifying and reporting
Lab reequirements for QSight triple quad LC/MS/MS systems, including storage, suppleis, space, electrical, power, gas supply requirements
Simulation using sophisticated modeling techniques has become a powerful tool for mass spectrometry
Ion Transmission Through a Quadrupole Ion Guide Under the Combined Influence of Viscous Flow and RF
Theoretical Studies of Swirling Flow and Heating Methods on Droplet Evaporation in a Heated Coaxial