Purnendu K. Dasgupta

TL;DR: In this paper, a waveguide with a liquid core is used as a probe for the detection or measurement of a chemical specie of interest by filling the waveguide core region with a light transmitting reagent liquid 12' which undergoes a change in an optical characteristic thereof when exposed to the chemical species and then inserting the filled waveguide 10 into an environment in which the specie may be present.

TL;DR: In this article, a small circular wire loop is incorporated adjacent sampling end of a fused silica capillary, in the same plane as the capillary to act as a microreservoir.

TL;DR: In this paper, a simple and robust sensing platform for detection of biological materials is reported, which combines the combined use of dye-doped nanoparticle tags and nanoporous high surface area (∼1,400 m2/g) films to achieve high intrinsic signal amplification.

TL;DR: In this paper, a single-line manifold is used for the measurement of mercaptans in the 0-2 mM (0-64 ppm S) concentration range, where only 10 μl of each reagent is consumed per determination.

TL;DR: In this paper, the extent of soil arsenic contamination in agricultural plots in the Bengal Delta through contaminated groundwater irrigation was investigated, and the analysis for estimation of soil OOC was performed by one-way ANOVA to determine significant differences between groups at P<0.05.