利用拉曼光谱技术识别溴氰菊酯和啶虫脒农药的研究.pdf

第5卷第3期
食品安全质量检测学报
VOL 5 No. 3
2014年3月
Journal of Food Salcly and Quality
Mar..2014
利用拉曼光谱技术识别溴氰菊酯和
啶虫脒农药的研究
郭浪花,彭彦昆;,李永玉, DHAKAL Sagar,陶斐斐
(中国农业大学工学院,国家农产品加工技术装备研发分中心,北京100083
摘要:目的初步建立溴氰菊酯农药和啶虫脒农药的拉曼光谱研究方法。方法利用激光拉曼光谱技术,将
农药溶液装满铝盒,采集农药溶液的拉曼光谱曲线,运用自主编写的程序对光谱曲线进行预处理,以去除光谱
噪音并扣除荧光背景,进而探讨溴氰菊酯农药和啶虫脒农药的快速无损检測方法。结果溴氰菊酯农药和啶虫
脒农药的拉曼特征频率较为丰富,选取574cm1、736cm'处的拉曼信号可识别溴氰菊酯农药,检测限为2500
mg/kg。选取752cm、840cm'处的拉曼信号可识别啶虫脒农药、当溶剂的丙酮-水比例为1:5时,最适合作
为检测溶剂配置啶虫脒农药溶液,为下一步确定啶虫脒检測限奠定基础。结论本研究对实现拉曼光谱技术检
测果蔬表面溴氰菊酯农药和啶虫脒农药具有重要意义。
关键词:拉曼光谱;溴氜菊酯;啶虫脒;识别
Research on identification of deltamethrin and acetamiprid
pesticides using Raman spectroscopy
GUO Lang-hua, PENG Yan-kun', LT Yong-yu, DHAKAL Sagar, TAO Fei-fei
ationa Research and Development Center for,o-processing Equipment, College of Engineering, China Agricu/tura/
University, Beijing 100083, China)
ABSTRACT: Objective To establish a method for the detection of deltamethrin and acetamiprid pesticides
based on Raman spectroscopy Methods Different concentrations of deltamethrin and acetamiprid pesticides
were filled with aluminum case and Raman spectra were acquired. The data preproccssing procedures were
plied on original Raman spectra to filter the spectral noise and remove the fluorescence back ground to providc
a rapid and nondestructive method for pesticide detection. Results Ihe pesticides of deltamethrin and acela
mirid have rich characteristic frequencies. The Raman spectra under 574 cm"and 736 cm"can be used to
dentify deltamethrin with the minimum detectable valuc of 2500 mg/kg. The Raman spectra undcr 752 cm
and 840 cm can be used to idenlify acetamiprid, and also the best solvent of 1: 5 acetone: waler(y: )was tes
tified for acetamiprid detection which will build a foundation for the determination of the minimum detectable
valuc of acetamiprid in the future. Conclusion It has a grcat Importancc for rapid and nondestructive detec
Lion of deltamethrin and acetamiprid pesticides on Fruits 'surlace in the future
基金项目:公益性行业(农业)科研专项(201003008)、科技部对发展中国家科技援助项目(I2013000
Fund: Supported by Mgro-scicntific Research in the Public Intcrest(201003008) and Tcchnical Assistan Irojccts in Devcloping Countri
通讯作者:彭彦昆,博士、教授,博士生导师,主要研究方向为农畜产品品质安全无损检测关键技术与装备。-mai: peng(cau.edu.cn
Corresponding author: IENG Yankun, Profcssor National R&D cntc for Agro-proccssing Equipment, Collcc of Enginccring, hina
Agricultural Univcrsity, No 17, Qinghua E Rd, Haidian District, Beijing 100083, China. E-mail: ypengccau cdu cn