Project Scientist II

• Oct 2022 - Present

Project Scientist I

• Jun 2019 - Oct 2022

Environmental Scientist /Modeler

• Nov 2015 - Jun 2019

* Fate and transport modeling (primarily agrochemicals) in North America and Europe* Dissipation kinetics assessments for agrochemicals in the North America and Europe* Analysis of spatial data using ArcGIS* Review, development, and testing of innovative quantitative tools and solutions* Statistical analysis of scientific data, including hypothesis testing, time-series analysis, background assessments, etc.* Review and evaluation of regulatory guidance and open literature* Technical report writing

Post-doctoral Research Associate

• May 2012 - Sep 2015

- Investigated degradation kinetics of herbicides in biobed materials in a laboratory setting.- Conducted greenhouse scale biobed experiment and collaborated with engineers to design and build on-farm biobed.- Determined long-term agricultural practices effects on soil enzyme activities. Statistical analyses were performed by using R.- Analyzed various soil and biomass samples for parameters such as pH, organic matter content, nutrient contents, moisture content, water holding capacity, and lignin content.- Used Enzyme-linked immunosorbent assay (ELISA) technique and GC-MS to determine herbicide concentration in soil and biomass samples.- Measured soil enzyme activities using colorimetric method.

Research Assistant

• Aug 2006 - Sep 2011

- Collected experimental data and built predictive models for veterinary antibiotic sorption using multivariate linear regression. - Developed conceptual transport models and utilized computer software CXTFIT and HYDRUS-1D to model solute transport processes and estimate transport parameters. Model efficiency values >99%.- Performed statistical analysis such as analysis of variance (ANOVA) and multivariate linear regression using SAS.- Characterized dissolved organic matter using carbon and nitrogen analyzer, FTIR spectroscopy, UV-VIS and titration techniques.- Characterized soil clay mineral composition using X-ray diffraction results.- Investigated the effects of agroforestry practices on sorption and desorption of veterinary antibiotics. - Conducted transport experiment to investigate one-dimensional transport of 14C-labeled antibiotics in repacked column with and without the presence of dissolved organic matter.

Research Assistant

• Sep 2004 - Jun 2006

- Surveyed the distribution of heavy metals of different chemical forms in coastal wetlands in the Pearl River estuary in China. - Assessed the bioavailability and environmental risk of heavy metals contamination in the Pearl River estuary wetlands. - Surveyed the distribution of heavy metals of different chemical forms in coastal wetlands in the Pearl River estuary in China. - Assessed the bioavailability and environmental risk of heavy metals contamination in the Pearl River estuary wetlands.

Editor

• Sep 2002 - May 2004

Editor of the School of Chemical Engineering student publication at Nanjing Forestry University, China Editor of the School of Chemical Engineering student publication at Nanjing Forestry University, China