Abstract
Pesticides are agrochemicals widely used to control pests in agricultural fields. Uncontrolled usage of pesticides has imposed a serious threat to human health and the environment. As tea is a popular beverage in different parts of the world, it possesses a high risk of the presence of residual pesticides. Hence, to monitor the residual pesticide in tea, this review summarizes some of the inexpensive and time-saving detection techniques for the detection of pesticides extensively for tea plants. Our present work aims to cover optical methods such as colorimetric and surface-enhanced Raman spectroscopy, and electrochemical methods to replace the ordinary sophisticated and time-consuming analytical techniques such as HPLC, MS, and GC–MS. The methods we have reviewed in this article are capable of detecting different pesticide residues in tea with a satisfactory Limit of Detection (LOD); most of which are far below the Maximum Residue Limit (MRL) set by different regulatory bodies.
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