Microplastic contamination in lake Winnipeg, Canada PJ Anderson, S Warrack, V Langen, JK Challis, ML Hanson, MD Rennie Environmental pollution 225, 223-231, 2017 | 505 | 2017 |
Acute toxicity of the tire rubber-derived chemical 6PPD-quinone to four fishes of commercial, cultural, and ecological importance M Brinkmann, D Montgomery, S Selinger, JGP Miller, E Stock, AJ Alcaraz, ... Environmental Science & Technology Letters 9 (4), 333-338, 2022 | 236 | 2022 |
A critical assessment of the photodegradation of pharmaceuticals in aquatic environments: defining our current understanding and identifying knowledge gaps JK Challis, ML Hanson, KJ Friesen, CS Wong Environmental Science: Processes & Impacts 16 (4), 672-696, 2014 | 204 | 2014 |
Occurrences of tire rubber-derived contaminants in cold-climate urban runoff JK Challis, H Popick, S Prajapati, P Harder, JP Giesy, K McPhedran, ... Environmental Science & Technology Letters 8 (11), 961-967, 2021 | 179 | 2021 |
Development and calibration of an organic-diffusive gradients in thin films aquatic passive sampler for a diverse suite of polar organic contaminants JK Challis, ML Hanson, CS Wong Analytical chemistry 88 (21), 10583-10591, 2016 | 177 | 2016 |
Quantum yields for direct photolysis of neonicotinoid insecticides in water: implications for exposure to nontarget aquatic organisms Z Lu, JK Challis, CS Wong Environmental Science & Technology Letters 2 (7), 188-192, 2015 | 130 | 2015 |
Performance of a constructed wetland in Grand Marais, Manitoba, Canada: Removal of nutrients, pharmaceuticals, and antibiotic resistance genes from municipal wastewater JC Anderson, JC Carlson, JE Low, JK Challis, CS Wong, CW Knapp, ... Chemistry Central Journal 7, 1-15, 2013 | 120 | 2013 |
Macrophytes may not contribute significantly to removal of nutrients, pharmaceuticals, and antibiotic resistance in model surface constructed wetlands P Cardinal, JC Anderson, JC Carlson, JE Low, JK Challis, SA Beattie, ... Science of the Total Environment 482, 294-304, 2014 | 97 | 2014 |
Presence and hazards of nutrients and emerging organic micropollutants from sewage lagoon discharges into Dead Horse Creek, Manitoba, Canada JC Carlson, JC Anderson, JE Low, P Cardinal, SD MacKenzie, SA Beattie, ... Science of the total environment 445, 64-78, 2013 | 92 | 2013 |
Exposure to the Tire Rubber-Derived Contaminant 6PPD-Quinone Causes Mitochondrial Dysfunction In Vitro H Mahoney, FC da Silva Junior, C Roberts, M Schultz, X Ji, AJ Alcaraz, ... Environmental Science & Technology Letters 9 (9), 765-771, 2022 | 83 | 2022 |
Aquatic photochemistry of the sulfonamide antibiotic sulfapyridine JK Challis, JC Carlson, KJ Friesen, ML Hanson, CS Wong Journal of photochemistry and photobiology a: chemistry 262, 14-21, 2013 | 81 | 2013 |
Field evaluation and in situ stress testing of the organic-diffusive gradients in thin-films passive sampler JK Challis, KM Stroski, KH Luong, ML Hanson, CS Wong Environmental science & technology 52 (21), 12573-12582, 2018 | 73 | 2018 |
Wastewater sources of per-and polyfluorinated alkyl substances (PFAS) and pharmaceuticals in four Canadian Arctic communities KM Stroski, KH Luong, JK Challis, LG Chaves-Barquero, ML Hanson, ... Science of the Total Environment 708, 134494, 2020 | 68 | 2020 |
Stability of pharmaceuticals and other polar organic compounds stored on polar organic chemical integrative samplers and solid‐phase extraction cartridges JC Carlson, JK Challis, ML Hanson, CS Wong Environmental toxicology and chemistry 32 (2), 337-344, 2013 | 68 | 2013 |
An introduction to the benchmarking and publications for non-targeted analysis working group BJ Place, EM Ulrich, JK Challis, A Chao, B Du, K Favela, YL Feng, ... Analytical chemistry 93 (49), 16289-16296, 2021 | 55 | 2021 |
The influence of pH on sampler uptake for an improved configuration of the organic-diffusive gradients in thin films passive sampler KM Stroski, JK Challis, CS Wong Analytica chimica acta 1018, 45-53, 2018 | 54 | 2018 |
Inputs, source apportionment, and transboundary transport of pesticides and other polar organic contaminants along the lower Red River, Manitoba, Canada JK Challis, LD Cuscito, S Joudan, KH Luong, CW Knapp, ML Hanson, ... Science of the Total Environment 635, 803-816, 2018 | 53 | 2018 |
Calibration of organic-diffusive gradients in thin films (o-DGT) passive samplers for perfluorinated alkyl acids in water P Wang, JK Challis, KH Luong, TC Vera, CS Wong Chemosphere 263, 128325, 2021 | 36 | 2021 |
Pharmaceuticals and pesticides archived on polar passive sampling devices can be stable for up to 6 years JK Challis, ML Hanson, CS Wong Environmental toxicology and chemistry 37 (3), 762-767, 2018 | 35 | 2018 |
Rapid transition between SARS-CoV-2 variants of concern Delta and Omicron detected by monitoring municipal wastewater from three Canadian cities FF Oloye, Y Xie, M Asadi, J Cantin, JK Challis, M Brinkmann, ... Science of the Total Environment 841, 156741, 2022 | 34 | 2022 |