Pei-Jen Chen was a graduate student with Dr. Linden from 2002-2005 and graduated from Duke in 2005 with a Ph.D. in environmental engineering. Â During her time at the Duke she researched bioanalytical techniques for evaluation of UV based treatment of EDCs in water. Â After graduation, she went on to work as an Assistant Professor in the Department of Agricultural Chemistry at the National University of Taiwan where she is now a professor.