Purnendu K. Dasgupta

is now at

The University of Texas at Arlington

 
 

Detailed CV and Publication List

Brief CV

 

 

 

Dasgupta Symposium Information

Analytical Chemistry

Watch Three Liquids Flow
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See where we were in ATLANTA, GA.

Water Stains on Sand - Chemistry and Me

Watch the Liquid Crossflow Movie
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2001 Probst Lecture (.pdf file)

See Where We Were in Houston 2000

See Where We Were in Philly 2001

See Where We Were in Tampa FL 2002

We work with the Maddox Lab and make small stuff!

Professor Dasgupta's research encompasses a number of facets of modern analytical chemistry.  A major effort is centered on the continuous determination of background concentrations of trace and ultratrace gaseous constituents of the atmosphere, and near real time determinations of the chemical composition of atmospheric particulate matter.  For gases, liquid effluents from wetted wall denuders or diffusion scrubbers developed in this laboratory are coupled in the continuous flow mode to low dead volume detectors.  Some are portable and operate on batteries.  Fluorescence detection and suppressed conductometric ion chromatography are commonly used and permit continuous determination at the sub-ppb or ng/m3 level.  Ongoing research is focused on miniaturization.  Wearable pocket size continuously reading badge type devices for personnel monitoring for exposures to trace gases are being made.  The group has projects in Chem-Bio terror agent detection.  On wholly another front,  the group is interested in clinical diagnostics by breath analysis.
 

The use of 2-D flow on planar platforms, microfabricated and otherwise, are being explored for deployment in a variety of applications including multiple parallel assays and use in biphasic systems. Novel separation modes, detection principles and detector development are coupled with a variety of practical problems, ranging from polymer analysis to process titrations.


 
 

Figure above. Top left: 2-D flowcell apertures and gasket arrangement.  Other panels: dynamic flow patterns of two to five different liquids from up to 8 inlets, and up to three outlets.  Different inlets/outlets are used for each frame.  In the top middle pane, blue/pink fluids enter W/E ports and exit simultaneously through N and S ports.  Corner and center ports are closed. In the bottom right panel all inlets are indicated; all fluids exit through the common apical point.  Cell volume is 9 microliters.
 
 
  
 Selected Publications

  • "Soap Bubbles in Analytical Chemistry. Conductometric Determination of Sub-Parts Per Million Levels of Sulfur Dioxide With a Soap Bubble",  Kanyanee, T.; Borst,  W. L.; Jakmunee, J.; Grudpan, K.; Li, J. and Dasgupta, P. K.  Anal. Chem. 2006, 78 doi: 10.1021/ac052198h.

  • " Hybrid Fluorometric Flow Analyzer for Ammonia".  Amornthammarong, N., Jakmunee , J., Li, J.; Dasgupta, P. K. Anal. Chem. 2006, 78, DOI: 10.1021/ac051950b

  • "A Versatile Gas Particle Ion Chromatograph", Ullah, SM. R.; Takeuchi, M.; Dasgupta, P. K. Environ. Sci. Technol. 2006, 40, 962-968.

  • "Perchlorate and Iodide in Dairy and Breast Milk", Kirk, A. B.; Martinelango, P. K.; Tian, K.; Dutta, A.; Smith, E. E.; Dasgupta, P. K.  Environ.  Sci. Technol. 2005, 39, 2011-2017.

  • "The Origin of Naturally Occurring Perchlorate: The Role of Atmospheric Processes", Dasgupta, P. K.; Martinelango, K.; Jackson, W. A.; Anderson, T. A.; Tian  K.; Tock, R. W.; Rajagopalan, S. Environ. Sci. Technol. 2005, 39, 1569-1575.

Research Group

PKD with Benedetti-Pichler Award

Detailed CV and Publication List

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