【Abstract】 Based on the near infrared diffuse reflectance spectroscopy,the analytical methods of the fast and simultaneous determinations for asipilin,paracetamol and caffeine contained in the compound paracetamol have been built by the partial least squares method.For the three drug components asipilin,paracetamol and caffeine,the correlation coefficients 0.9994,0.9903 and 0.9994 have been obtained,the root mean square errors(RMSE) of the calibration samples were 0.313,0.520 and 0.0301,and the RMSE-s of the prediction samples were 1.07,0.464 and 0.309,respectively.更多还原