19 November 2004 Analysis of pesticides on or in fruit by surface-enhanced Raman spectroscopy
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Pesticides are a key component in protecting crops and producing the quantity of food required by today's world population. However, since excessive concentrations pose a threat to human health, the USA sets strict tolerance levels to ensure public safety. Unfortunately, many other countries ignore these regulations and imported food exceeding these levels or contaminated with banned pesticides is a common occurrence. Furthermore, rapid chemical analysis of pesticide residues is unavailable, and only a very small fraction of foods are inspected. The greatest concern is fruit, for which an estimated 12 million tons were imported in 2003. In an effort to address this need, we have been developing a simple and rapid procedure to analyze for pesticides on fruit surfaces or in the juice of fruits. The procedure employs metal-doped sol-gel filled capillaries that both chemically extracts the pesticide and generates surface-enhanced Raman spectra when irradiated. The SERS-active capillaries, sensitivity, and preliminary fruit analyses are presented.
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Chetan S. Shende, Chetan S. Shende, Frank Inscore, Frank Inscore, Alan Gift, Alan Gift, Paul Maksymiuk, Paul Maksymiuk, Stuart Farquharson, Stuart Farquharson, } "Analysis of pesticides on or in fruit by surface-enhanced Raman spectroscopy", Proc. SPIE 5587, Nondestructive Sensing for Food Safety, Quality, and Natural Resources, (19 November 2004); doi: 10.1117/12.569595; https://doi.org/10.1117/12.569595

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