1. Department of Biological Sciences, Duquesne University, Pittsburgh, Pennsylvania, USA;
2. Department of Geology and Environmental Science, University of Pittsburgh, Pittsburgh, Pennsylvania, USA;
3. Elemental Analysis, Thermo Fisher Scientific, Lanham, Maryland, USA;
4. Vertical Marketing, Environmental and Industrial, Thermo Fisher Scientific, San Francisco, California, USA;
5. RedHorse Environmental, Tionesta, Pennsylvania, USA;
6. Department of Chemistry and Biochemistry, Duquesne University, Pittsburgh, Pennsylvania, USA;
7. Center for Environmental Research and Education, Duquesne University, Pittsburgh, Pennsylvania, USA