Fiber optic method to determine adulteration in petrol

This paper deals with an electronic technique to determine adulteration of petrol by kerosene. In this method the light is guided inside an optical fiber in which optical fiber cladding is removed over a small length, thus the evanescent wave interacts with the measurand. The received light is converted into a proportional current and later into voltage. The results thus found were similar to the result obtained from UV-VIS spectrophotometer. The method present in this paper is simple, compact and portable.