120 results on '"Sandstrom, Mark W."'
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2. Comparison of detection limits estimated using single- and multi-concentration spike-based and blank-based procedures
3. Pesticides and their degradates in groundwater reflect past use and current management strategies, Long Island, New York, USA
4. Daily stream samples reveal highly complex pesticide occurrence and potential toxicity to aquatic life
5. Complex mixtures of dissolved pesticides show potential aquatic toxicity in a synoptic study of Midwestern U.S. streams
6. Occurrence and persistence of fungicides in bed sediments and suspended solids from three targeted use areas in the United States
7. Chemical contaminants in water and sediment near fish nesting sites in the Potomac River basin: Determining potential exposures to smallmouth bass (Micropterus dolomieu)
8. Ecological consequences of neonicotinoid mixtures in streams
9. Food, Beverage, and Feedstock Processing Facility Wastewater: a Unique and Underappreciated Source of Contaminants to U.S. Streams
10. Occurrence of Azoxystrobin, Propiconazole, and Selected Other Fungicides in US Streams, 2005–2006
11. Common insecticide disrupts aquatic communities: A mesocosm-to-field ecological risk assessment of fipronil and its degradates in U.S. streams
12. Speciation of volatile arsenic at geothermal features in Yellowstone National Park
13. Inclusion of Pesticide Transformation Products Is Key to Estimating Pesticide Exposures and Effects in Small U.S. Streams
14. Food, Beverage, and Feedstock Processing Facility Wastewater: a Unique and Underappreciated Source of Contaminants to U.S. Streams.
15. Quality of pesticide data for groundwater analyzed for the National Water-Quality Assessment Project, 2013–18
16. Use of set blanks in reporting pesticide results at the U.S. Geological Survey National Water Quality Laboratory, 2001-15
17. Data analysis considerations for pesticides determined by National Water Quality Laboratory schedule 2437
18. A field study of selected U.S. Geological Survey analytical methods for measuring pesticides in filtered stream water, June - September 2012
19. Restricted terrestrial carbon input to the continental shelf during Cyclone Winifred: implications for terrestrial runoff to the Great Barrier Reef Province
20. Determination of heat purgeable and ambient purgeable volatile organic compounds in water by gas chromatography/mass spectrometry
21. Determination of pesticides and pesticide degradates in filtered water by direct aqueous-injection liquid chromatography-tandem mass spectrometry
22. Diagenesis of Organic Phosphorus in Marine Sediments: Implications for the Global Carbon and Phosphorus Cycles
23. Design, analysis, and interpretation of field quality-control data for water-sampling projects
24. Occurrence of pesticides in groundwater and sediments and mineralogy of sediments and grain coatings underlying the Rutgers Agricultural Research and Extension Center, Upper Deerfield, New Jersey, 2007
25. Chapter A5. Section 2.2B. Syringe-Filter Procedure for Processing Samples for Analysis of Organic Compounds by DAI LC-MS/MS
26. Persistence and Potential Effects of Complex Organic Contaminant Mixtures in Wastewater-Impacted Streams
27. Simulation of branched serial first‐order decay of atrazine and metabolites in adapted and nonadapted soils
28. Lagrangian sampling of wastewater treatment plant effluent in Boulder Creek, Colorado, and Fourmile Creek, Iowa, during the summer of 2003 and spring of 2005--Hydrological and chemical data
29. Occurrence of Azoxystrobin, Propiconazole, and Selected Other Fungicides in US Streams, 2005–2006
30. Adjustment of pesticide concentrations for temporal changes in analytical recovery, 1992-2006
31. Variations in Pesticide Leaching Related to Land Use, Pesticide Properties, and Unsaturated Zone Thickness
32. Occurrence and Fate of Pesticides in Four Contrasting Agricultural Settings in the United States
33. Pesticide Fate and Transport throughout Unsaturated Zones in Five Agricultural Settings, USA
34. Study design and percent recoveries of anthropogenic organic compounds with and without the addition of ascorbic acid to preserve water samples containing free chlorine, 2004-06
35. Results of analyses of the fungicide Chlorothalonil, its degradation products, and other selected pesticides at 22 surface-water sites in five Southern states, 2003-04
36. Chemical Loading into Surface Water along a Hydrological, Biogeochemical, and Land Use Gradient: A Holistic Watershed Approach
37. Widespread detection of N,N‐diethyl‐m‐toluamide in U.S. Streams: Comparison with concentrations of pesticides, personal care products, and other organic wastewater compounds
38. GLYPHOSATE, OTHER HERBICIDES, AND TRANSFORMATION PRODUCTS IN MIDWESTERN STREAMS, 20021
39. Work plan for determining the occurrence of glyphosate, its transformation product AMPA, other herbicide compounds, and antibiotics in midwestern United States streams, 2002
40. Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory-A method supplement for the determination of Fipronil and degradates in water by gas chromatography/mass spectrometry
41. Determination of Low Concentrations of Acetochlor in Water by Automated Solid-Phase Extraction and Gas Chromatography with Mass-Selective Detection
42. Relations between pesticide use and riverine flux in the Mississippi River basin
43. Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory-Determination of pesticides in water by C-18 solid-phase extraction and capillary-column gas chromatography/mass spectrometry with selected-ion monitoring
44. U.S. Geological Survey laboratory method for methyl tert-butyl ether and other fuel oxygenates
45. Methods of analysis by the U. S. Geological Survey National Water Quality Laboratory-Determination of organonitrogen herbicides in water by solid-phase extraction and capillary-column gas chromatography/mass spectrometry with selected-ion monitoring
46. Chemical Loading into Surface Water along a Hydrological, Biogeochemical, and Land Use Gradient: A Holistic Watershed Approach.
47. Biological marker analysis and stable carbon isotopic composition of oil seeps from Tonga
48. Outwelling from tropical tidal salt flats
49. Microbial lipids from a nearshore sediment from Bowling Green Bay, North Queensland: The fatty acid composition of intact lipid fractions
50. Dissolved nutrient fluxes from the nearshore sediments of Bowling Green Bay, central Great Barrier Reef Lagoon (Australia)
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