Development of Mobile Applications and Low Cost Portable Pesticide Residue Detector using Visible Light Spectroscopy

To increase the crop production, majority of farmer use pesticide, even though there SNI 7313:2008 on pesticide maximum residue level in agriculture product. It is important to develop an instrument to detect this pesticide residue. The purpose of this research is to develop a rapid and nondestructive pesticide residue detector. In this research, the visible light spectroscopy is used. One of the main reason to use this spectroscopy method is to reduce the cost of hardware implementation, and the instrument can be categorized as low-cost instrument. The limitations of this research are the type of pesticide and vegetable that can be detected is only carbaryl and Chinese cabbage. In conclusion, the cost of implementation is about $139 and dimension of the first prototype is about 11.8 × 11.7 × 9.8 cm, and the weight is about 285 gr. This study also found that the 660 nm LED has better performance than 620 nm LED to detect the carbaryl residue in Chinese cabbage.