Abstract:
Excessive use of chemical insecticides by farmers could lead to the emergence of insecticide residues on plants. Analysis on three samples of red chili in the area Kubang and Palas, Pekanbaru using Gas Chromatography showed positive results for residues of profenofos and λ-cyhalotrin with content ranging between 0.1264 – 4.5110 and 0.3220 – 0.8782 mg/kg, but not detected containing diazinon residues. Water rinse method was able to decrease the concentration of insecticide residues until 8 – 26 % for rinse with cold water and 29 – 43 % for rinse with hot water. This data was supported by the results of the analysis of the phosphate and chloride’s content in rinse water sample, phosphate’s concentration were in the range of 1.6055 – 7.8899 ppm for cold water and 7.8899 – 18.4404 ppm for hot water, while chloride’s concentration were in the range of 0 – 0.1511 and 0.1511 – 0.3777 ppm, respectively for cold water and hot water
