U.S. flagAn official website of the United States government
                    Here's how you know **Official websites use .gov**
                            
                            A **.gov** website belongs to an official government organization in the United States.
 **Secure .gov websites use HTTPS**
                            
                            A **lock** (                            
                              A locked padlock                                                      
                            
                            ) or **https://** means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.


Menu Agricultural Research Service
						
                    U.S. DEPARTMENT OF AGRICULTURE
 Soil and Water Management Research: St. Paul, MN
 close



    Research

                    Research Projects
                                    Publications
                                    Collaborations
                                    News
                                    Software
                People

                    Staff Listing
                                    CareersSearch small
                    Search
            
            ARS Home
                                About ARS
                                Contact Us




ARS Home Midwest Area St. Paul, Minnesota Soil and Water Management Research Research Publications at this Location





- ARS National Programs
- Search for a scientific manuscript
- Search for a research project
- ARS Software
- Programs and Projects
- Collaborations
- Subjects of Investigation
- Publications

Title:   Author  item
                                            Rice, Pamelaitem
                                            FAIRBAIRN, DAVID - University Of Minnesotaitem
                                            KARPUZCU, EKREM - University Of Minnesotaitem
                                            KAUFENBERG, ELIZABETH - University Of Minnesotaitem
                                            ARNOLD, WILLIAM - University Of Minnesotaitem
                                            NOVAK, PAIGE - University Of Minnesotaitem
                                            KOSKINEN, WILLIAM - Retired ARS Employeeitem
                                            BARBER, BRIAN - University Of Minnesotaitem
                                            SWACKHAMER, DEBORAH - University Of Minnesota
  Submitted to: American Chemical Society Abstracts
                                    Publication Type: Abstract Only
                                    Publication Acceptance Date: 5/12/2015
                                    Publication  Date: 8/10/2015
                                    Citation: Rice, P.J., Fairbairn, D., Karpuzcu, E., Kaufenberg, E., Arnold, W., Novak, P., Koskinen, W., Barber, B., Swackhamer, D. 2015. Understanding sources of contaminants of emerging concern in a mixed use watershed [abstract]. American Chemical Society Abstracts. Picogram. 88:75. Abstract No. 195.Interpretive Summary:
                                Technical Abstract: Contaminants of emerging concern (CECs) have been detected in surface waters worldwide and include biologically active compounds originating from agricultural, residential, and industrial sources that may result in potential ecological and health effects. The objectives of this research were to determine what CECs are associated with specific land-uses, identify indicator compounds to be used as monitoring tools and provide science-based recommendations for more effective monitoring strategies. Water and sediment samples collected from four sub-watersheds of the Zumbro River Watershed, Minnesota, USA, were evaluated for pesticides, pharmaceuticals, antibiotics, phytoestrogens and wastewater contaminants. Agricultural herbicides and non-prescription drugs were more commonly detected than prescription drugs or phytoestrogens. The most commonly detected CECs were atrazine, caffeine, acetaminophen, the mosquito repellent DEET, and metalochlor. The antibiotics erythromycin and sulfamethoxazole were not found as frequently as other compounds, but were found in the greatest concentrations. Detection frequencies of the five most detected CECs were similar across the four subwatershed sites. Urban pharmaceuticals and personal care products (PCPPs) exhibited higher concentrations during low-flow periods, while run-off associated pesticides had higher concentrations during spring and summer high flow periods. PCPPs were significantly elevated in water or sediment at sites with greater population density and percentage of developed land use. We found unique marker compounds that would differentiate agricultural sources from non-agricultural sources. Cotinine, DEET, carbamazepine, erythromycin and sulfamethoxazole were found to be good markers for urban wastewater-derived sources, and atrazine, metolachlor and acetochlor were found to be good markers for agricultural sources. These results can be used to design more effective targeted sampling and monitoring programs. Greater understanding of the occurrence, concentration and sources of these contaminants will guide implementation of appropriate reduction and remediation strategies.


Return to top


Connect with ARS Sign up


ARS Home
                            USDA.gov
                            Plain Writing
                            Policies & Links
                            Civil Rights Statements
                            FOIA
                            Accessibility Statement
                            Privacy Policy
                            Non-Discrimination Statement
                            Quality of Information
                            USA.gov
                            WhiteHouse.gov