The Vehicle, Spring 1981

Vol. 22, No. 2 Table of Contents Old Farmers at the Arcade CafeJohn Stockmanpage 4 ConfettiCathy Georgepage 6 Ode to a Corned Beef SandwichJeff Bennettpage 6 The Ice on Kirschner\u27s CreekScott Fishelpage 7 Love Poem to LindaJohn Stockmanpage 7 Grandfather\u27s PortraitJames Marshpage 8 The MassageKathleen Alakspage 9 A Driving ForceSandy Youngpage 10 King DandelionNancy Siebenpage 12 One Afternoon - Contemplating HouseworkKelli Sanderpage 13 Tent WallsAndy Sudkamppage 14 The SentinelElise Hempelpage 16 Daddy\u27s AftershaveJeff Bennettpage 16 The WeddingChris Goerlichpage 17 UntitledCarol Hansenpage 17 Treasures in the YardScott Fishelpage 18 Hitchhiker\u27s BootsAndy Sudkamppage 20 The RaffleLaura Henrypage 21 A Walk at NightJudi Jinespage 24 Morning in the DumpJeff Bennettpage 24 In Praise of Chocolate Ice CreamJohn Stockmanpage 25 Summer on the Isle of PalmsElisabeth Cristpage 26 The WaveHerbert S. Demminpage 27 RememberingJohn Kleinsteiberpage 27 PotatoJohn Stockmanpage 28 Late ShowChris Goerlichpage 30 Love in Him - JoeDebbie Klinnertpage 31 ShoeScott Fishelpage 35 The DrinkerBob Huntpage 36 The WidowGeorge Ndu Igbudupage 37 ElectricityScott Fishelpage 37 Hatchet JackB.L. Davidsonpage 39 Walking Home LateJohn Stockmanpage 41 NovemberCindy Hubbarttpage 41 On the BusLaura Henrypage 42 HaikuJames Marshpage 43 SpillwayGloria Rhoadspage 43 Art Cover design by Linda Fraembs PhotographRobin Scholzpage 3 PhotographRobin Scholzpage 5 PhotographMichelle Glassmeyerpage 15 PhotographRobert Schinaglpage 19 PhotographTom Robertspage 38 PhotographRobert Schinaglpage 44https://thekeep.eiu.edu/vehicle/1039/thumbnail.jp

Expanded Target-Chemical Analysis Reveals Extensive Mixed-Organic-Contaminant Exposure in U.S. Streams

Surface water from 38 streams nationwide was assessed using 14 target-organic methods (719 compounds). Designed-bioactive anthropogenic contaminants (biocides, pharmaceuticals) comprised 57% of 406 organics detected at least once. The 10 most-frequently detected anthropogenic-organics included eight pesticides (desulfinylfipronil, AMPA, chlorpyrifos, dieldrin, metolachlor, atrazine, CIAT, glyphosate) and two pharmaceuticals (caffeine, metformin) with detection frequencies ranging 66–84% of all sites. Detected contaminant concentrations varied from less than 1 ng L^–1 to greater than 10 μg L^–1, with 77 and 278 having median detected concentrations greater than 100 ng L^–1 and 10 ng L^–1, respectively. Cumulative detections and concentrations ranged 4–161 compounds (median 70) and 8.5–102 847 ng L^–1, respectively, and correlated significantly with wastewater discharge, watershed development, and toxic release inventory metrics. Log₁₀ concentrations of widely monitored HHCB, triclosan, and carbamazepine explained 71–82% of the variability in the total number of compounds detected (linear regression; <i>p</i>-values: < 0.001–0.012), providing a statistical inference tool for unmonitored contaminants. Due to multiple modes of action, high bioactivity, biorecalcitrance, and direct environment application (pesticides), designed-bioactive organics (median 41 per site at μg L^–1 cumulative concentrations) in developed watersheds present aquatic health concerns, given their acknowledged potential for sublethal effects to sensitive species and lifecycle stages at low ng L^–1