Detection of Omethoate Residues in Peach with Surface-Enhanced Raman Spectroscopy
In this work, surface-enhanced Raman spectroscopy (SERS) was used with silver colloid substrate for rapid detection of omethoate (an organophosphate pesticide) in standard solution and peach extract. The findings demonstrated that the characteristic wavenumber of the pesticide could be precisely identified using the SERS method. The calibration curve was plotted between concentrations and Raman intensities of the target peak at 1649 cm−1 for the peach extract and at 1647 cm−1 for the standard solution. The coefficients of determination (R2) of 0.9829 and 0.98 were obtained for standard solution and for peach extract, respectively. The calculated limits of detection for omethoate in standard solution and in peach extracts were 0.001 mg L−1 and 0.01 mg kg−1, respectively. This study revealed that the proposed method could be used for the analysis of trace contaminants like omethoate in multifaceted food matrices.
KeywordsSERS Residue detection Omethoate Substrate Fruit
Compliance with Ethical Standards
Conflict of Interest
Tehseen Yaseen declares that she has no conflict of interest. Da-Wen Sun declares that he has no conflict of interest. Hongbin Pu declares that he has no conflict of interest. Ting-Tiao Pan declares that he has no conflict of interest.
This article does not contain any studies with human participants performed by any of the authors.
- CAC. (2013). Pesticides MRLs. Codex Alimentarius Commission. Available from: <http://www.codexalimentarius.org>. Avaliable from http://www.fao.org/fao-who-codexalimentarius/standards/pestres/pesticide-detail/en/?p_id=55 (Accessed on 4 September 2017)
- Canamares M, Garcia-Ramos J, Gomez-Varga J, Domingo C, Sanchez-Cortes S (2005) Comparative study of the morphology, aggregation, adherence to glass, and surface-enhanced Raman scattering activity of silver nanoparticles prepared by chemical reduction of Ag+ using citrate and hydroxylamine. Langmuir 21(18):8546–8553CrossRefGoogle Scholar
- Fang-Ying JI, Si LI, Dan-Ni YU, Guang-Ming Z, Qiang H (2010) Study of omethoate by vibrational and surface enhanced raman spectroscopy. Chin J Anal Chem 38(8):1127–1132Google Scholar
- Fowler SM, Wood BR, Ottoboni M, Baldi G, Wynn P, van de Ven R, Hopkins DL (2015) Imaging of intact ovine m. semimembranosus by confocal Raman microscopy. Food Bioprocess Technol 11:2279–2286Google Scholar
- IPCS. (2009). The WHO recommended classification of pesticides by hazard. Available from http://www.who.int/ipcs/publications/pesticides_hazard_2009.pdf?ua=1 (Accessed on 4 Semptember 2017)
- Pelaz B, Alexiou C, Alvarez-Puebla RA, Alves F, Andrews AM, Ashraf S, Bosi S (2017) Diverse applications of nanomedicine. Am Chem Soc Nano 11(3):2313–2381Google Scholar
- Wardencki W, Chmiel T, Dymerski T, Biernacka P, Plutowska B (2009) Application of gas chromatography, mass spectrometry and olfactometry for quality assessment of selected food products. Ecol Chem Eng S 16(3):287–300Google Scholar
- Yaseen T, Sun D-W, Cheng J-H (2017) Raman imaging for food quality and safety evaluation: fundamentals and applications. Trends Food Sci Technol 62:177–189Google Scholar
- Yassen T, Pu H, Sun D-W (2018) Functionalization techniques for improving SERS substrates and their applications in food safety evaluation: A review of recent research trends. Trends Food Sci Technol. https://doi.org/10.1016/j.tifs.2017.01.012
- Yande L, Yuxiang Z, Haiyang W, Bing Y (2016) Detection of pesticides on navel orange skin by surface-enhanced Raman spectroscopy coupled with Ag nanostructures. Int J Agric Biol Eng 9(2):179–185Google Scholar