P
Purnendu K. Dasgupta
Researcher at University of Texas at Arlington
Publications - 508
Citations - 17644
Purnendu K. Dasgupta is an academic researcher from University of Texas at Arlington. The author has contributed to research in topics: Ion chromatography & Detection limit. The author has an hindex of 62, co-authored 506 publications receiving 16779 citations. Previous affiliations of Purnendu K. Dasgupta include Dow Chemical Company & Texas Tech University.
Papers
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Atmospheric production of oxalic acid/oxalate and nitric acid/nitrate in the Tampa Bay airshed: Parallel pathways
TL;DR: In this article, a significant amount of particulate H 2 Ox/oxalate (Ox) occurred in the coarse particle fraction of a dichotomous sampler, the ratio of oxalate concentrations in the PM 10 to PM 2.5 fractions ranged from 1 to 2, with mean±sd being 1.4±0.2.
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An intercomparison of formaldehyde measurement techniques at ambient concentration
Tadeusz E. Kleindienst,Paul B. Shepson,Chris M. Nero,Robert R. Arnts,Silvestre B. Tejada,Gervase I. Mackay,L. K. Mayne,Harold I. Schiff,John A. Lind,Gregory L. Kok,Allan L. Lazrus,Purnendu K. Dasgupta,Shen Dong +12 more
TL;DR: In this paper, a study was conducted to evaluate five techniques for determining ambient formaldehyde concentrations, including spectroscopic determination, derivatization, fluorometric analysis, high-performance liquid chromatography, and detection by u.v. absorption.
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Small-volume Raman spectroscopy with a liquid core waveguide
TL;DR: In this article, a liquid-core waveguide based on a new fluoropolymer tube is proposed as the basis of a small probe-volume Raman-scattering-based detector.
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Flow-injection analysis in the capillary format using electroosmotic pumping
TL;DR: In this article, a 75μm bore fused-silica capillary is used as the pumping mechanism for flow-injection analysis (FIA) and colorimetric detection is performed by an optical absorbance detector using the diameter of the capillary as the optical path.
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Iron(III) modification of Bacillus subtilis membranes provides record sorption capacity for arsenic and endows unusual selectivity for As(V).
TL;DR: A sensitive arsenic speciation approach is developed based on the binding of inorganic arsenic species by the ferrated bacteria and its unusual high selectivity toward As(V) at low pH.