Former Lab staff




	Dr. Shimaa Kteeba Postdoctoral Investigator (2022-2025) Email: kteeba@uwm.edu or shimaakteeba@yahoo.com Research Interests: /nanoplastics, nanotoxicity, dissolved organic matter, aquatic biogeochemistry, marine science.
	Mr. Samuel Broadnax PSM Student in Freshwater Sciences (2024-2025) E-mail: broadna8@uwm.edu Now PhD student in 51猎奇 Engineering
	Ms. Rahmah Sajid 2025 ACS Project-SEED summer intern Project: Chemical characterization of microplastic-derived DOM and PFAS-DOM interactions.
	Ms. Molly Fox-Kincaid (UW-Madison) 2025 Freshwater@UW summer intern (REU) Project: Fate and transport of emerging contaminants.
	Ms. Kaitlyn Suchomel Undergraduate Research Fellow (SURF Recipient) Email: suchome9@uwm.edu Molecular weight distributions of DOM released from microplastics
	Ms. Bridget Willson (Drew University) 2024 Summer Intern Project: Interactions of PFAS with dissolved organic matter
	Ms. Nadalee Thao (2024 Summer Intern). Project: Characterization of dissolved organic matter released from microplastics Now at UW-La Crosse
	Ms. Jena Choi Student Research Assistant & 51猎奇鈥檚 Undergraduate Research Fellow (SURF, Summer 2023; Sept 2023-May 2024) E-mail: jenachoi@uwm.edu Projects: Characterization of dissolved organic matter in produced water
	Mr. Samuel Broadnax Master Student/Freshwater Sciences (2023-2024) E-mail: broadna8@uwm.edu Projects: Stable C&N isotopes, phosphorus in sediments
	Mr. Sean Gibbs 51猎奇鈥檚 Undergraduate Research Fellow (SURF). August 2023-May 2024 Email: gibbssj@uwm.edu Degradation of disposable face masks in the environment
	Ms. Nadalee Thao, 2023 ACS Summer Intern/ Program. E-mail: thaonl@uwm.edu.
	Mr. Darwin Weidert, Undergraduate Research UR@51猎奇 (Summer 2023). E-mail: dweidert@uwm.edu
	Ms. Margaret Sollberger, Undergraduate Research UR@51猎奇 (Summer 2023).E-mail: sollber3@uwm.edu
	Mr. John Luke Student Research Assistant and 51猎奇’s SURF Fellow (2022-2023) School of Freshwater Sciences Email: johnluke@uwm.edu
	Mr. Mitchell Schutte Graduate Student (2019-2022) E-mail: schutte@uwm.edu Research Interests: Microplastics/Nanoplastics and Dissolved Organic Matter (DOM) in freshwater environments. Now Conveyance Systems Data Supervisor at
	Mr. Sean Gibbs 51猎奇鈥檚 Undergraduate Research Fellow (SURF). August 2022- May 2023 Email: gibbssj@uwm.edu Degradation of disposable face masks in the environment
	Ms. Gretchen Roost Student Research Assistant (2022) School of Freshwater Sciences E-mail: groost@uwm.edu Project: Sediment Geochemistry
	Mr. Danny Huang Student Intern / Lab Assistant (2021-2022) , Milwaukee Research Project: Nutrients and water quality in a coastal lagoon.
	Ms. Princy Patel ACS Summer Intern (2022)/ Program Email: 23patelp@gmail.com Spectroscopic analysis of chromophoric dissolved organic matter (CDOM) in natural waters in Wisconsin
	Mr. Sean Gibbs Student Research Assistant (Summer 2022) UR@51猎奇 Program Email: gibbssj@uwm.edu Project: Nutrients in a coastal lagoon
	Ms. Tia Walter Student Research Assistant (Summer 2022) UR@51猎奇 Program Project: Nutrients in a coastal lagoon
	Ms. Emma Gilbertson Research Assistant/Lab Tech (Summer 2022) E-mail: gilbe257@uwm.edu
	Ms. Emma Linhares Email: linhare2@uwm.edu Student Research Assistant (2021-2022) 51猎奇鈥檚 Undergraduate Research Fellow (SURF) Spectroscopic characterization of dissolved organic matter (DOM) from estuarine environments
	Ms. Rebecca Ho Summer student Intern (2021) , Mequon Research Project: Fluorescence characterization of natural dissolved organic matter.
	Ms. Sophia Ho Summer student Intern (2021, part time) , Mequon Research Project: Optical properties of natural dissolved organic matter

	Mr. Derek Guo Student Research Assistant (Summer 2021) B.S. from University of Minnesota E-mail: guo00140@umn.edu. Now Graduate Assistant at Georgia State University
	Dr. Hui LIN PhD Student (2016-2021), Now Scientist at Polar Research Institute of China E-mail: linhui@pric.org.cn Dissertation title:
	Mr. Jacob Budke Email: jnbudke@uwm.edu Undergraduate Research Assistant (Summer 2021) 51猎奇鈥檚 Undergraduate Research Fellow (SURF)
	Ms. Liberty Ansorge Email: lansorge@uwm.edu Student Research Assistant (2020-2021) 51猎奇鈥檚 undergraduate research fellow (SURF) Research project: characterization of DOM in a eutrophic lagoon.
	Mr. Seungyong Park Email: park77@uwm.edu Student Research Assistant (2020-2021) 51猎奇’s undergraduate research fellow (SURF) 2020-2021.
	Dr. Yangyang Yang Visiting PhD student Now Assistant Professor at Xuzhou Institute of Engineering E-mail: yangyy7075@126.com Research Interests: Nanoparticles; DOM
	Dr. Changyou Wang Visiting Scholar from Naijing, China (2018-2019) E-mail: chywang@nuist.edu.cn Research Interests: Nutrients, Biogeochemical cycling of phosphorus, Alkaline phosphatase.
	Dr. Dan LI Visiting PhD student (2017-2019) Now assistant professor at Shanghai Institute of Technology E-mail: ldanltm@163.com Thesis research: Role of natural organic matter with different molecular sizes and functionalities in regulating the toxicity of Me-Hg in embryonic zebrafish
	Dr. Miao Liu (from Institute of Applied Ecology, Chinese Academy of Sciences) and Dr. Wei Zhang (from Shenyang Agricultural University). Visiting scholar (Summer 2018)
	Dr. Bin Yang Visiting Scholar from Qinzhou University (2018-2019) Now: Professor at Jiangsu Ocean University, China E-mail: binyang@jou.edu.cn Research Interests: Biogeochemical cycling of phosphorus in marine environments.
	Mr. Dongxu Zhang Visiting PhD student (2017-2018) E-mail: dxzhang0580@hotmail.com
	Dr. Visiting Scholar (2016-2017); Permanent address: , Chinese Academy of Sciences. E-mail: gao9 xlgao@yic.ac.cn; Research Interests: Biogeochemistry of carbon, nutrients and trace metals in coastal marine environments.
	Dr. Shimaa Kteeba, PhD Student (2014-2017). E-mail: shimaakteeba@yahoo.com; Now Lecturer at Damietta University, Egypt Research Interests: Microplastics and nanoparticles, Biogeochemical cycling of organic matter and trace elements in aquatic environments; Toxicity of engineered nanoparticles in embryonic zebrafish.
	Dr. Wenzhi LIU Visiting Scientist (2016 – 2017) Permanent address: Wuhan Botanical Garden, Chinese Academy of Sciences. E-mail: liuwz@wbgcas.cn
	Dr. Huacheng XU Visiting Scientist (2016 – 2017) Permanent address: I, Chinese Academy of Sciences. E-mail: hcxu@niglas.ac.cn
	Mr. Tarek Teber Graduate Student (2014.01-2016.08) Thesis title:听 Chemical Composition and Fluxes of Dissolved Organic Matter and Nutrients from the Lower Milwaukee River. Now at Wisconsin State Laboratory of Hygiene, Madison E-mail: t
	Mr. Matthew Stangel Graduate student (PSM) Research Interests: Biogeochemical cycling of phosphorus. E-mail: matt.stangel707@gmail.com Now Environmental Scientist at Heartland Ecological Group
	Dr. Peng LIN 听 Postdoc (2012. –2016) Now Assistant Research Scientist at DOE Savannah River Ecology Lab & Department of Marine Science / University of Georgia 贰-尘补颈濒:听 iorijay.lin@gmail.com
	Ms. Wei XING Research Assistant Now Research Technician at DOE Savannah River Ecology Lab
	Mr. Stephen DeVilbiss Graduate Student (2013-2016) Now Research Scientist at U.S. Geological Survey E-mail: devilbis.step@gmail.com
	听 Dr. Zhengzhen (Jen) Zhou 听Postdoctoral Research Associate (2012–2015) 听Now: Environmental Scientist at U.S. Army 听E-mail: zhengzhenzhouyeah@gmail.com

	听Ms. Raechel Huff 听Student Research Assistant 听2014-2015 Now at: Arizona
	Prof. Dr. Weifeng Yang;听 Visiting Scientist (Aug-Oct, 2014) Permanent address: Professor at , of Ocean and Earth Sciences, China.听 E-mail:
	听Mr. Alex Frie Summer REU Student (2014) from听Saint John鈥檚 University, MN Now: at UMN; E-mail: afrie003@ucr.edu
	听Dr. Jianyu Ni Visiting Scholar (2013.06–2014.06) Permanent address:听Second Institute of Oceanography (SOA), Hangzhou, China. E-mail: jianyuni@sio.org.cn
	Ms. Aja Gaeth Research Assistant and REU student (2012-2014) Geosciences, 51猎奇 E-mail:
	Dr. Min Chen Visiting Professor (Aug-Oct 2013) Permanent address: College of Ocean and Earth Sciences; China. E-mail: mchen@xmu.edu.cn
	Dr. Lei Gao Visiting Scholar (2012.12-2013.12) Permanent address: East China Normal University, Shanghai, China. E-mail: Research Interests: Nutrient dynamics; CDOM; Colloids.
	Ms. Allison Fabino 2013 Summer NSF REU student
	Ms. Mikaela Cherry 2012 Summer REU student
	Ms. Zhengzhen Zhou, Graduate student (2007-2012) E-mail: zhengzhen.zhou@eagles.usm.edu
	Dr. Weifeng Yang Visiting Scientist (Jan 2011-Jan 2012) Permanent address: Professor of of Ocean and Earth Sciences, Xi, China. E-mail:
	Dr. Hui-Jun He Postdoctoral Research Associate (2010-2012) Home Institute: I, Chinese Academy of Science.
听	Mr Hailong Huang,听 Research Associate (2011),听 Univ of Southern Mississippi
	Dr. Wenxin Jiang,听 Graduate Student (2010-2011). PhD from Georgia State University, E-mail:
	Ms. Kusumica Mitra听 Graduate student (2009-2012) at Univ of Southern Mississippi,听听 E-mail: jinimitra@gmail.com
	Mr. Peng Lin Visiting student at USM (2009-2010) from Xiamen University.听 E-mail: iorijay.lin@gmail.com
	Dr. Bjorn Stolpe, Postdoctoral Fellow (2007-2010) at Univ of Southern Mississippi from the University of Gothenburg, Sweden.听听听听 E-mail:
	Dr. Xueyan Jiang, Visiting PhD student (2007-2008).听 Now Associate Professor at .听 E-mail:
听	Ms. Jilian Danner, graduate student (2006-2007), Univ of Southern Mississippi.
	Mr. Xuri Wang, Graduate Student听 (2006-2009) Univ of Southern Mississippi, Research Technician (2009-2012), the Center for Trace Analysis at Univ of Southern Mississippi.听 Now at Hainan Research Academy of Environmental Sciences, China. E-mail:
	Dr. Yihua Cai,听 Postdoctoral Fellow (2005-2007) at and Research Scientist (2007-2009) at Univ of Southern Mississippi. Permanent address:听 Professor at China.听 E-mail:
	Dr. Fugen Dou,听 Postdoctoral Fellow (2005-2007) at 听 Now听 Professor at y听 E-mail:
	Ms. Mindy Juliana, Research Assistant (2004-2005), .Now, Fairbanks, Alaska.听 Facebook at https://www.facebook.com/mindy.juliana
	Mr. Chunhao Xu, Graduate Student (2003-2005), .听 Now, Professor at the University of Texas of the Permian Basin. E-mail:
	Dr. Claude Belzile,听 Postdoctoral Fellow (2004-2005), UAF.听听 Now Research Scientist at Institut des sciences de la mer de Rimouski;听 Universit茅 du Qu茅bec 脿 Rimouski, Canada.听听 E-mail:
	Dr. Chin-Chang Hung, Visiting Scientist (2003) from , now Professor at . Taiwan, E-mail:
	Dr. Celine Gueguen, Postdoctoral Fellow (2001-2004) at University of Alaska Fairbanks.听听 Now Professor at /Canada, E-mail: celine.gueguen@usherbrooke.ca
	Dr. Deli Wang, Graduate Student (2001-2004) at UAF. Now Professor at , China.听 E-mail:
	听Ms. Jaime Lehner, Summer REU student at UAF (2001) from University of Colorado.
	Dr. Nigel Munn,听 International exchange Student (2001-2002) from UK, currently working on hydrogeology of the Chalk,听 E-mail:
	Dr. , Visiting Scientist (2001) at University of Alaska Fairbanks.听 Permanent address: Professor in the of Ocean and Earth Sciences at .听听听 E-mail:
	Professor Yipu Huang, Visiting Scientist (2001) at UAF.听听 Permanent address:听




Group photo 鈥� 2015 (from Left Tarek, Guo, Peng, Zhengzhen, Steve, Shimaa, and Matt)	Group Photo — May 2016: Shimaa, Wenzhi, Huacheng, Steve, Tarek, Peng, and Guo (from left to right)
Group photo — 2014 in the old building (from left: Ni, Guo, DeVilviss, Teber, Stolpe, Zhou, Lin, Gaeth, and Frie)	Group activities during Bjorn’s visit in the summer of 2014
2013 at 51猎奇 (from left: Min Chen, Peng Lin, Zhengzhen Zhou, Stephen DeVilbiss, Guo, JIangyu Ni, and Lei Gao)	Taret Teber (right) as a chief scientist for a Lake Michigan sampling trip in 2015 (from left: Peng, Steve and Tarek).
2009 at University of Southern Mississippi (from left Guo, Xueyan Jiang, Xuri Wang, Bjorn Stolpe, and Yihua Cai).	2011 at USM (from left: Huijun, Kusumica, Guo, Zhengzhen, Weifeng, and Wenxin)
2005 at University of Alaska Fairbanks	Group photo at 51猎奇 (2018): Changyou Wang, Guo, Bin Yang, Dan Li, Yangyang Yang, Dongxu Zhang, and Hui Lin.

51猎奇