Applications and Method Development of LC-MS for Detecting Contaminants Taken Up by Plants Irrigated with Treated Water

Literature seminar abstract

Irrigating agricultural crops with treated wastewater provides a cheaper and more sustainable alternative to traditional irrigation practices. However, many water quality standards for the use of treated wastewater containing environmental organic contaminants are unavailable. Most recent studies providing details of plant uptake of organic contaminants through irrigation with treated water are crop specific. In a recent study, Riemenschneider et al. developed and validated an analytical method for the determination of 28 wastewater-derived contaminants and metabolites in plants with high water content (lettuce, cabbage, and tomato). The method, which includes solid-liquid extraction and liquid chromatography-tandem mass spectrometry, when compared to the QuEChERS method (Quick, Easy, Cheap, Effective, Rugged, and Safe), showed better analytical results. In addition, the method allows for the simultaneous detection of a wide range of compounds—all with varying physical and chemical properties—as well as metabolites of pharmaceuticals found in plant tissue samples. Riemenschneider et al. successfully applied their developed method to several studies with varying crops, environmental contaminants, and growing conditions (greenhouse and field). Matrix effects were calculated and compared for each extraction method and type of analyte. With this method, one can sensitively and selectively analyze environmental contaminants and metabolites taken up in the plant through treated wastewater. Detection of trace concentrations of such compounds in various plant samples is key in identifying which crops take-up contaminants into edible parts of the plant, thus entering our food chain.  1



(1)           Riemenschneider, C. Anal. Methods 2017, 9, 1273.



Division(s): Analytical

Speaker: Rachelle Rehberg

Speaker Institution: Colorado State University

Event Date: 10-04-2017

Event Time: 4:00 PM

Event Location: Chemistry A101

Mixer Time: 3:45 PM

Mixer Location: Chemistry B101E

Host: T. Borch