Deepali Gupta

Work place: Centre for Development of Advanced Computing, Mohali, India



Research Interests: Embedded System, Computational Engineering


Deepali Gupta has obtained her Master of Technology degree from centre for Development of Advanced computing (CDAC), Mohali in the field of Electronic Product Design and Technology in 2015 and Bachelor of Technology degree from DAV institute of engineering and technology in field of Electronic and communication engineering in 2013. Her area of interest is embedded systems.

Author Articles
Design and Development of Pesticide Residue Detection System using EC and pH Sensor

By Deepali Gupta Balwinder Singh Harpreet Singh

DOI:, Pub. Date: 8 Mar. 2016

Increase in the population of India, results in higher demand for food as well as decrease in land for farming. Hence to fulfil the increased demand, food is adulterated to get more quantity in short period of time. Moreover, pesticides in crops are using above the legal maximum residue limit by farmers to gain more profit in lesser time. Although pesticides are highly effective on pests but they can reside in an environment. Among the class of organophosphate pesticides, chlorpyrifos is widely used in vegetables. Chlorpyrifos has toxic effects on the human body particularly on brain and nervous system. In this paper, design and development of sensors for pesticide residue detection using parameters like electrical conductivity, pH etc are proposed. It was found that the relative percentage deviation between the value of conductivity in pesticide free samples and the pesticide containing samples of bitter gourd, bottle gourd and tomatoes are 31.4%, 10.7% and 19.09% and also between pesticide free samples and market samples are 33.5%, 8.7% and 16.56% respectively. This large variation among different samples shows the presence of pesticide residue. Hence, the method can be successfully used for the detection of pesticide residues in vegetable samples. The proposed sensor system is easy, rapid and time undemanding method. So, this electronic device can also be used to check impurities in any other liquid like water, milk etc.

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