Paper-based potentiometric sensing devices modified with chemically reduced graphene oxide (CRGO) for trace level determination of pholcodine (opiate derivative drug)

Robust, reliable and cost-effective paper-based analytical device for potentiometric pholcodine (opiate derivative drug) ion sensing has been prepared and characterized.

Trace level determination of various types of analyte using selective chemosensor: a general survey

Trace level determination of analyte is an extremely important phenomenon and highly relevant area of environmental science, biology, medicine and pharmacology. In this review we have described different type of chemosensor that have been used so far for trace level determination of different types of analyte. Applications of chemo sensor in the arsenic determination have been discussed here. Determination of amino acid by fluorescence spectroscopy has been depicted. Detection of poisonous organic analytes by chemosensor have been made. Some chemosensors have been found to be effective to the determination of selective cations. Various techniques used for determination of analyte by using chemo sensor as well as probable sensing mechanism have been explained here.

Simultaneous measurement of free and conjugated estrogens in surface water using capillary liquid chromatography tandem mass spectrometry

Given detrimental impacts induced by estrogens at trace level, determination of them is significant but challenging due to their low content in environmental samples and inherent weak ionisation. A modified...