Investigation on the Detection of Pesticide Residue in Vegetable Based on Infrared Spectroscopy
LI Wen-xiu1，XU Ke-xin1，WANG Yan1*，LEI Zhen-lin2，ZHANG Zhen-hou2
1. National Key Laboratory of Precision Measuring & Testing Techniques and Instruments, Tianjin University, Tianjin 300072，China 2. Chinese Academy of Sciences，Shenyang Scientific Instrument Center，Shenyang 110004，China
Abstract：In this paper, the mid-infrared Attenuated Total Reflection (ATR) spectra of two slathered pesticides dichlorvos and trichlorfon in vegetable juice solution have been investigated. It can be concluded that within characteristic absorption region of the two pesticides in the mid-infrared range, the pigments inside the vegetable have no effect on the pesticide’s absorbance; pesticides in standard solution and vegetable juice solution share almost the same absorbance characteristics. These results indicate that: the authors can use the model built by the absorbance data of pesticides in water solution to simulate their absorbance in vegetable solution, then based upon infrared spectroscopy, the direct detection of pesticide residue on the vegetable can be achieved; it also provides a possible way of rapid detection on vegetable in the future.
李文秀1，徐可欣1，汪 曣1*，雷震霖2，张振厚2 . 蔬菜农药残留检测的红外光谱法研究[J]. 光谱学与光谱分析, 2004, 24(10): 1202-1204.
LI Wen-xiu1，XU Ke-xin1，WANG Yan1*，LEI Zhen-lin2，ZHANG Zhen-hou2 . Investigation on the Detection of Pesticide Residue in Vegetable Based on Infrared Spectroscopy . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2004, 24(10): 1202-1204.
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