Enju Wang

Enju Wang

B.S., Shandong Normal University
M.Sc., Nanking Soil Institute, Academia Sinica
Ph.D., ETH Zurich
Analytical Chemistry
Associate Professor

Research interests:

Chemical sensors are simple devices that can selectively and reversible monitor a chemical species in a complex media without sample pretreatment. They are extremely important tools for monitoring chemical processes that occur in many areas including the environment, industry, food production, agriculture, biology/clinical chemistry, etc. The development of chemical sensors for the direct monitoring of key ions, gases and biochemical molecules in complex biological samples is a rapidly growing avenue of research. Some of the successful sensors have been used for the routine measurement of gases (O2, CO2 etc. ), electrolytes (H+, Na+, K+, Ca2+, Cl-) and neutral species (glucose, urea etc.) or for on-line monitoring during open heart surgery, or food processing and quality control.

The thrust of my research is to investigate new chemical materials and membrane components that can be potentially useful in the development of highly sensitive and selective detectors for important gases, ions and for macrosized polyions; to study the sensing mechanisms; and to build novel instrumentation for biologically and environmentally important species. The current research topics are aimed to

Research Projects Available:

  1. Development of easy to use test cards for determination of protamine and heparin and other related biological species using optical films.
  2. Development of optical sensors for urea, amino acids, ammonia, chloride etc. biological species.
  3. To study other porous materials as optical sensing film support.

Publications:

  • E. Wang and M. E. Meyerhoff, "Polyanion Detection of Macromolecular Heparin via Selective Coextraction into thin Polymeric Films", Anal. Chem., 67, 522-527, (1995).
  • B Fu, E. Bakker, J. H. Yun, E. Wang, V. C. Yang and M. E. Meyeanhoff, "Polymer Membrane-Based Polyion Sensors: Development, response Mechanism, and Bioanalytical Applications", Electroanalysis, 7, 823-829, (1995).
  • E. Wang, G. Wang, L. Ma, C. M. Stivanello, S. Lam and H. Patel, "Optical Films for Protamine Detection with Lipophilic Dichlorofluorescein Derivatives", Anal. Chim. Acta, 334, 139-147, (1996).
  • Enju Wang, Leanne Ma, Lin Zhu and Christopher M. Stivanello, "Calcium Optical Sensors Based on Lipophilic Anionic Dye and Calcium-selective Organophosphate Ionophore or Neutral Carrier", Analytical Letters, 30, 33-44, (1997).
  • Enju Wang, Lin Zhu, Leanne Ma and Hema Petal, "Optical Sensors for Sodium, Potassium and Ammonium Ions Based on Lipophilic Anionic Fluorescein Dye and Neutral Carriers", Anal. Chim. Acta, 357, 85-90, (1997).
  • Enju Wang, Hohgmei Chen, Hema Patel, Jshwar Sadaragani, Carlos Romero, "Influence of nonionic surfactants on the optical response of cation selective membrane films", Anal. Chim. Acta, 397, 287-294, (1999).

Contact Information:
Dr. Enju Wang, Associate Professor
Address: St. John's University
Department of Chemistry
8000 Utopia Parkway
Jamaica, NY 11439-0001

SAH Room 333
Hours: Mon. - Thurs., 8:30 a.m. - 4:30 p. m.
Fri., 8:30 a.m. - 3:00 p.m.

Phone: (718) 990-5225
Fax: (718) 990-1876
E-Mail: wange@stjohns.edu