Analytical Techniques for Determining Chloropyrifos in Fruits and Vegetables | Chapter 7 | Recent Trends in Chemical and Material Sciences Vol. 1

For the detection of chloropyrifos, highly sensitive spectrophotometric and gas chromatographic methods were established. The base was chloropyrifos alkaline hydrolysis to 1,2,4-trichloropyridine, followed by coupling with congored in the presence of nitric acid. At 605nm, the absorption maxima of blue colour formed at 800-900C. In the range of 0.5-5.7 ppm, Beer’s law was followed. 0.005