Rapid detection of dichlorvos in chlorpyrifos by mid-infrared and near-infrared spectroscopy

被引：0

作者：

Gao X. ^{[1
]}

Wang X.-Y. ^{[1
]}

Wang D. ^{[1
]}

Hao X.-H. ^{[1
]}

Min S.-G. ^{[1
]}

机构：

[1] Department of Applied Chemistry, College of Science, China Agricultural University

来源：

Guang Pu Xue Yu Guang Pu Fen Xi/Spectroscopy and Spectral Analysis | 2010年 / 30卷 / 11期

关键词：

Attenuated total reflection; Chlorpyrifos; Dichlorvos; Infrared; Near infrared; Partial least squares;

D O I：

10.3964/j.issn.1000-0593(2010)11-2962-05

中图分类号：

学科分类号：

摘要：

In the present study, the content of dichlorvos in chlorpyrifos was rapidly determined by mid-infrared and near-infrared spectroscopy. The quantitative models were established by partial least squares (PLS) method and optimized. The independent validation sets and 7 test samples were used to evaluate the model accuracy. The results showed that mid-infrared and near-infrared spectroscopy can accurately determine the content of dichlorvos in chlorpyrifos. The RMSEC (the root mean square error of calibration) of the mid-infrared model and near-infrared model was 0.013 and 0.020, respectively. R2 (determination coefficient) both were 1.000. For 7 test samples, RMSEP before model recalibration is 0.22 (MIRS) and 0.09 (NIRS). The adaptability of the near-infrared model was much better and model updating was unnecessary. To sum up, MIR and NIR are both rapid and easy-operation method with simple pretreatment.

引用

页码：2962 / 2966

页数：4