AGRICULTURAL CHEMICALS AND TOXIC SUBSTANCES RESEARCH INSTITUTE, COUNCIL OF AGRICULTURE, EXECUTIVE YUAN
发明人:
Lin Shao-Kai,Chuang Wei-Chen
申请号：
US201715476408
公开号：
US10001462(B2)
申请日:
2017.03.31
申请国别(地区):
美国
年份:
2018
代理人:
Muncy, Geissler, Olds & Lowe, P.C.
摘要：
A method and system for detecting pesticide residue in agricultural products. The system includes a chromatographic and mass-spectrometric system and a computer. The system inspects first and second sample solutions prepared from two identical extracts of an agricultural product. The first sample solution includes no additives while the second sample is added with a pesticide standard which is intended to be detected by the system for comparison. The computer compares the mass chromatograms of the first and second sample solutions, and calculate an increased integral area by which the peak of the second sample solution in the second mass chromatogram exceeds the peak of the first sample solution in the first mass chromatogram at the same retention time. As such, the concentration of pesticide residue in the sample can be determined by a ratio between the increased integral area and the concentration of the pesticide standard.
