Method for detecting arsenic in scenting agent with AOTF near-infrared spectrometer

The present invention discloses a method to detect arsenic in spice with an AOTF near infrared spectrograph, which comprises procedures below: A. Calibrating samples are prepared according to actual situations of tested spice solution and a specific arsenic content grade; B. The AOTF near infrared spectrograph collects near infrared spectrum data of the calibrating sample; C. A rated calibrating model is created based on relevant data of the near infrared spectrum data corresponding to the arsenic content; D. Near infrared spectrum data of the spice sample to be tested are collected; E. Arsenic content of the spice sample to be tested is analyzed in light of the calibrating model above to measure arsenic content in the spice sample to be tested. The present invention has the advantages ofunnecessary sample preprocessing, quick detection (second-level), no reagent consumption, pollution-free and environment-friendly analysis and high accuracy, etc.