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Benjamin F. Trueman
Dalhousie University
Inorganic chemistryChemistryCorrosionIron oxideEnvironmental science
13Publications
5H-index
58Citations
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Publications 14
Newest
Access to clean and safe drinking water is a perpetual concern in Arctic communities due to challenging climatic conditions, limited options for the transportation of equipment and process chemicals, and the ongoing effects of colonialism. Water samples were gathered from multiple locations in a decentralized trucked drinking water system in Nunavut, Canada, over the course of one year. The results indicate that point of use drinking water quality was impacted by conditions in the source water a...
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#1Benjamin F. Trueman (Dal: Dalhousie University)H-Index: 5
Last. Graham A. Gagnon (Dal: Dalhousie University)H-Index: 26
view all 4 authors...
Exposure to lead, copper, and manganese via drinking water is a public health concern. Modeling can account for solubility due to simple inorganic ligands but generally falls short in capturing the effects of natural organic matter, particles, and colloids; environmental data are needed to understand the importance of these species. Here, we demonstrate the use of asymmetric flow field flow fractionation with UV and ICP-MS detection to separate drinking water samples into ionic species, colloids...
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#1Bofu Li (Dal: Dalhousie University)
#2Benjamin F. Trueman (Dal: Dalhousie University)H-Index: 5
Last. Graham A. Gagnon (Dal: Dalhousie University)H-Index: 26
view all 6 authors...
Maintaining drinking water quality during distribution requires a range of tools to ensure chemical stability at the tap. Coloured water is a primary concern, and sodium silicates have been reported to reduce colour from iron. However, the impacts of water quality and the interactions between sodium silicate and iron oxides are not well characterized in this context. We conducted a bench-scale factorial experiment (24) to evaluate the effect of sodium silicate on colour and turbidity with pH, hu...
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#1Benjamin F. Trueman (Dal: Dalhousie University)H-Index: 5
#2Brittany S. Gregory (Dal: Dalhousie University)H-Index: 1
Last. Graham A. Gagnon (Dal: Dalhousie University)H-Index: 26
view all 8 authors...
Lead and manganese are regulated in drinking water due to their neurotoxicity. These elements have been reported to co-occur in drinking water systems, in accordance with the metal-scavenging properties of MnO2. To the extent that manganese is a driver of lead release, controlling it during water treatment may reduce lead levels. We investigated transport of lead and manganese at the tap in a full-scale distribution system: consistent with a cotransport phenomenon, the two metals were detected i...
1 CitationsSource
#1Michael Brophy (Dal: Dalhousie University)H-Index: 2
#2Benjamin F. Trueman (Dal: Dalhousie University)H-Index: 5
Last. Graham A. Gagnon (Dal: Dalhousie University)H-Index: 26
view all 5 authors...
Disinfection byproducts (DBPs) and algal toxins can be expensive to monitor and represent significant potential risks to human health. DBPs, including haloacetic acids and trihalomethanes, are possible or probable human carcinogens. Microcystin-LR—produced by cyanobacteria—is linked with various adverse health effects. Here we show that fluorescence spectra predict both microcystin-LR occurrence and DBP formation potential (DBPfp) in lake water. We compared models with either fluorescence spectr...
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#1Yaohuan Gao (Dal: Dalhousie University)H-Index: 1
#2Benjamin F. Trueman (Dal: Dalhousie University)H-Index: 5
Last. Graham A. Gagnon (Dal: Dalhousie University)H-Index: 26
view all 4 authors...
Lead release in a lead (Pb, anode)–iron oxide (α-Fe2O3, cathode) galvanic system was studied under the influence of synthetic extracellular polymeric substances (sEPS). Sodium alginate, bovine serum albumin (BSA), and cytochrome c represented extracellular polysaccharides, proteins, and electrochemically active components, respectively. Microbiologically influenced corrosion was investigated using sEPS and pelleted and resuspended Pseudomonas aeruginosa cells. Relative to the anaerobic inorganic...
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#1Elise Deshommes (École Polytechnique de Montréal)H-Index: 10
#2Benjamin F. Trueman (Dal: Dalhousie University)H-Index: 5
Last. Michèle Prévost (École Polytechnique de Montréal)H-Index: 38
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Profile, regulatory, and investigative sampling were completed in six utilities to study the impact of partial and full lead service line replacements (LSLRs) on water lead levels (WLLs) and consumer’s exposure. As compared to households with no replacement, lead release after partial LSLR (PLSLR) was generally greater in the short term (3–50 days), and comparable or lower in the medium ( 2 years). This was mainly explained by insufficient time elapsed to stabilize scales after disturbances to t...
1 CitationsSource
#1Benjamin F. Trueman (Dal: Dalhousie University)H-Index: 5
#2Wendy H. Krkošek (Dal: Dalhousie University)H-Index: 8
Last. Graham A. Gagnon (Dal: Dalhousie University)H-Index: 26
view all 3 authors...
Lead is a potent neurotoxin and drinking water represents an important route of exposure, especially where legacy lead pipe is widespread. Polyphosphates are often added to drinking water to sequester iron and calcium, but they may form coordination complexes with lead, increasing its solubility. This risk is not well characterized in practice: the prevalence of lead-polyphosphate complexes in drinking water systems is not known. We used size-exclusion chromatography (SEC) with multi-element (IC...
2 CitationsSource
Lead exposure via drinking water remains a significant public health risk; this study explored the potential effects of upstream iron corrosion on lead mobility in water distribution systems. Specifically, galvanic corrosion of lead by iron (oxyhydr)oxides was investigated. Coupling an iron mineral cathode with metallic lead in a galvanic cell increased lead release by 531 μg L–1 on average—a 9-fold increase over uniform corrosion in the absence of iron. Cathodes were composed of spark plasma si...
2 CitationsSource
This study examined sulfate deposition in Nova Scotia from 1999 to 2015, and its association with increased pH and organic matter in two protected surface water supplies (Pockwock Lake and Lake Major) located in Halifax, Nova Scotia. The study also examined the effect of lake water chemistry on drinking water treatment processes. Sulfate deposition in the region decreased by 68%, whereas pH increased by 0.1–0.4 units over the 16-year period. Average monthly color concentrations in Pockwock Lake ...
10 CitationsSource
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