Experimental study into ultraviolet degradation of abamectin based on absorption spectrum

摘要

The absorption spectrum of abamectin was studied using a spectrophotometer. The experimental results show that the most intensive characteristic peak (219 nm) was found in the abamectin standard solution spectrum. The function relationship between abamectin concentration and absorbance was obtained with a good linear relationship (R > 0.99). The hardware platforms for pesticide residue degradation are designed and built based on ultraviolet light technology, and abamectin degradation experiments were conducted using ultraviolet light. It is put forward to describe the degradation effect according to the change in the pesticide's absorbance, and the prediction model of pesticide residues degradation was obtained according to the relationship between degradation time and absorbance. Combining with the abamectin pesticide residue detection model function based on the absorption spectrum, the degradation rate is calculated corresponding to different degradation times.