Colorimetric and absorbance based sensor for sulfide and bicarbonate ions by dye doped polymer composite.

We have developed a simple, rapid and cost-effective Dual-channel "colorimetric and absorbance" sensor using polyvinylpyrrolidone (PVP) capped Rhodamine6g (Rh6G) dye composite. Dye-doped polymer composite probe (PVPRH) exhibit intense, narrow absorption properties and long-term stability than the bare Rh6G. The probe's colorimetric relationship with pH was demonstrated by absorption titration.

MIP integrated surface plasmon resonance in vitro detection of sodium benzoate.

Food safety is a major concern, with several new diseases arising from unhealthy foods and their composition. Our lifestyle leads us to use ready-to-eat and ready-to-cook foods. The use of preservatives is necessary to make these foods long-lasting.