Discover Food Safety and Quality
Pesticides contaminate many foods – especially fruits and vegetables – during the growing season through soil, water, and air indirectly or directly. With residual levels regulated for human health and safety, short analytical turnaround times are critical to providing the necessary information required to make rapid decisions about food, safely. For rapid screening of food matrices to detect the presence of pesticides residues, our chromatographic technologies are trusted throughout the industry.
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.
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.
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.
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.
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.
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.
