Paul A. Helm

Ministry of the Environment, Conservation and Parks — Canada

Environmental Science · Physical Sciences

61h-index12.0kcitations171works8.02yr avg
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Research Topics

Toxic Organic Pollutants Impact(103), Microplastics and Plastic Pollution(41), Recycling and Waste Management Techniques(34), Pharmaceutical and Antibiotic Environmental Impacts(25), Atmospheric chemistry and aerosols(23)

Publications171 total

Source characterization of polycyclic aromatic hydrocarbons in urban sediments: Insights from the contribution of coal tar, sealants, and other related industrial materials in Lake Ontario
The Science of The Total Environment·2025
Fractionation of Anthropogenic Particles (Microplastics and Microfibers) along a 2200 km Transect of Canadian Sediments
ACS ES&T Water·2025Open Access
An Urban Stormwater Contaminant Signature: Defining Priority Contaminants for Urban Stormwater Research
Water Environment Research·2025· 1 citedOpen Access
Heterocyclic aromatic compounds in Lake Ontario sediments: Spatiotemporal distribution and new approaches to fingerprinting
The Science of The Total Environment·2025· 3 cited
Optimized Extraction Methods for Pristine and Aged Microplastics from Complex Water Samples
ACS ES&T Water·2025· 3 citedOpen Access
Three Complementary Sampling Approaches Provide Comprehensive Characterization of Pesticide Contamination in Urban Stormwater
Urban Science·2025· 3 citedOpen Access
Contribution of Coal Tar Sources to Polycyclic Aromatic Compounds and Associated Ecological Risk in Lake Ontario Sediments: Inference from a Novel Marker
Environmental Science & Technology·2025· 5 cited
Facile detection of microplastics from a variety of environmental samples with conjugated polymer nanoparticles
Environmental Science Advances·2024· 4 citedOpen Access
Compound Class-Specific Temporal Trends (2021–2023) of Tire Wear Compounds in Suspended Solids from Toronto Wastewater Treatment Plants
ACS ES&T Water·2024· 9 cited
Microplastics and Anthropogenic Particles in Recreationally Caught Freshwater Fish from an Urbanized Region of the North American Great Lakes
Environmental Health Perspectives·2024· 10 citedOpen Access
Short- and medium-chain chlorinated paraffins in surface sediment from Lake Ontario
Environmental Science and Pollution Research·2024· 4 cited
Informing the Exposure Landscape: The Fate of Microplastics in a Large Pelagic In-Lake Mesocosm Experiment
Environmental Science & Technology·2024· 19 citedOpen Access
Assessment of Tire-Additive Transformation Product 6PPD-Quinone in Urban-Impacted Watersheds
ACS ES&T Water·2024· 30 cited
Targeted screening of passive samplers as an “Early Warning” of novel contaminants in the Great Lakes Basin
Journal of Great Lakes Research·2024· 4 cited
Passive sampling with targeted and non-targeted analysis as an “Early Warning” of water-soluble contaminants in the Great Lakes
Journal of Great Lakes Research·2024· 6 cited
Size-Resolved Identification and Quantification of Micro/Nanoplastics in Indoor Air Using Pyrolysis Gas Chromatography–Ion Mobility Mass Spectrometry
Journal of the American Society for Mass Spectrometry·2024· 13 cited
Reductions of Plastic Microbeads from Personal Care Products in Wastewater Effluents and Lake Waters Following Regulatory Actions
ACS ES&T Water·2024· 20 citedOpen Access
A temporal record of microplastic accumulation in sediment cores of the Great Lakes, North America, reflects macroeconomic and regional influences
FACETS·2024· 10 citedOpen Access
Source-specific categorization of microplastics in nearshore surface waters of the Great Lakes
Journal of Great Lakes Research·2023· 24 citedOpen Access
Size-resolved identification and quantification of micro/nano-plastics in indoor air using pyrolysis gas chromatography-ion mobility mass spectrometry
2023· 3 citedOpen Access
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Frequent Co-authors

Chris Marvin(13), Gregg T. Tomy(10), Eric J. Reiner(10), Chelsea M. Rochman(7), Chris D. Metcalfe(7), Terry F. Bidleman(6), Liisa M. Jantunen(6), Miriam L. Diamond(5), Li Shen(5), Karen MacPherson(5), Gary A. Stern(4), D. Michael Whittle(4), Terry Kolic(4), Patricia L. Corcoran(3), Aaron T. Fisk(3), Derek C. G. Muir(3), Keenan Munno(3), Kerri Pleskach(3), Ed Sverko(3), Donna Zaruk(3)