U.S. Geological Survey
Edward T. Furlong, Ph.D., received M.S. and Ph.D. degrees in Chemical Oceanography (Geochemistry) from the University of Washington, and was as a post-doctoral fellow in the School of Public and Environmental Affairs and the Department of Chemistry at Indiana University, working with Professor Ronald A. Hites.
Ed joined the U.S. Geological Survey, National Water Quality Laboratory in 1987. Since then, his research has focused on the development of state-of-the-art mass spectrometry techniques for analysis of trace organic compounds of environmental interest, including pharmaceuticals, hormones, pesticides, and their transformation products.
Ed applies these techniques to understand the transport and fate of these compounds in aquatic and terrestrial ecosystems, and the effects these compounds may have on human and ecosystem health. His research has been an integral part of the Emerging Contaminants Project of the USGS’s Toxic Substances Hydrology Program and it’s efforts to better understand the sources, transport, and transformation of emerging contaminants in aquatic and terrestrial ecosystems.
Most recently, Ed has been named a highly cited researcher by Thomson Reuters for 2015 and 2016 (hcr.stateofinnovation.thomsonreuters.com), and is a member of the Editorial Advisory Board for Environmental Sciences & Technology.
Trends of Known and New Contaminants of Emerging Concern Measured in a Wastewater-Influenced Stream Using Passive Samplers
Integrating passive samplers, such as the polar organic compound integrative sampler (POCIS), provide the means to collect an integrated profile of many polar organic contaminants present in surface water whose presence may be continuous or episodic, reflecting changes in hydrologic or source input. POCIS permits contaminant trend assessment by (1) identification and quantitative concentration using methods for targeted contaminants, such as analgesics, antidepressants, stimulants, and their degradates, as well as (2) identification and semiquantitative estimation of nontargeted contaminants using a comprehensive screening strategy.
We present results from structured target and nontarget analysis of POCIS extracts deployed over a year-long period under differing flow conditions. The extracts were analysed using a Quadrupole Time-of-Flight Mass Spectrometer (QToF MS) operated in the positive electrospray ionization mode and coupled to an ultra performance liquid chromatograph, using a C-18 reversed phase column for separation of analytes. The QToF MS was operated in a scan mode combining spectra with alternating low and high collision cell energies. The resulting data were then aligned and analysed instrument software and an extended pesticide and toxicology library to identify known and suspected contaminants. Results from the QToF analysis were compared to targeted analysis using high-performance liquid chromatography/tandem quadrupole mass spectrometry (LC/MS/MS).