Detecting trace pesticides in real time using single particle aerosol mass spectrometry

Analytica Chimica Acta
Zachary BarkerMatthias Frank

Abstract

Pesticides are toxic substances and may cause unintentional harm if improperly used. The ubiquitous nature of pesticides, with frequent use in agriculture and the household, and the potential for harm that pesticides pose to non-target organisms such as wildlife, humans, and pets, demonstrate the need for rapid and effective detection and identification of these compounds. In this study, single particle aerosol mass spectrometry (SPAMS) was used to rapidly detect compounds from four classes of pesticides commonly used in agricultural and household applications. These include permethrin (pyrethroid class), malathion and dichlorvos (organophosphate class), imidacloprid (chloronicotinyl class), and carbaryl (carbamate class). Analytical standards of each compound were diluted and aerosolized using a nebulizer to create particles for analysis in the SPAMS instrument. The resultant dual-polarity time-of-flight mass spectra were then analyzed to identify the characteristic peaks of the compound in each sample. In addition, samples of commercial products containing pesticides, a commercial insecticide spray, containing permethrin, and a canine flea collar, containing carbaryl, were analyzed in their original form using SPAMS without a...Continue Reading

References

Feb 12, 2002·Environmental Health Perspectives·Vladimir TurusovLorenzo Tomatis
Jun 23, 2005·Journal of Agricultural and Food Chemistry·J M BonmatinM E Colin
Apr 6, 2006·Rapid Communications in Mass Spectrometry : RCM·Jonathan P WilliamsJames H Scrivens
Oct 16, 2007·Rapid Communications in Mass Spectrometry : RCM·Audrey N MartinMatthias Frank
Apr 26, 2008·Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes·Renata Raina, Lina Sun

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