Bioaccessibility of metals in Toronto city parks
Subject
Bioaccessibility of metals; bioavailability; contamination in city parks; metals in soil; risk assessment; soil contaminantsAbstract
The purpose of this work was to estimate metals bioaccessibility in soil samples from 15 city parks in Toronto, Ontario, Canada. Total metals concentrations were analyzed to identify contaminants that exceeded the Canadian Council of Ministers of the Environment (CCME) guidelines for residential/parkland use. Arsenic, barium, cadmium, cobalt, copper, lead, nickel and zinc were of particular interest as they have been known to have major effects on human health. Metal concentrations were below the CCME guidelines except for lead at three of the parks. Lead, copper and cadmium bioaccessibility in the soil samples as determined by an in-vitro physiologically based extraction test (PBET) were relatively high. Based on linear regression analyses there were no significant relationships between total metals and soil properties such as pH and total organic carbon (TOC). Generally there was negative correlation between metal bioaccessibility and TOC and positive correlation between bioaccessibility and soil pH.
Related items
Showing items related by title, author, creator and subject.
-
Distribution, bioaccessibility and human health risks of toxic metals in peri-urban topsoils of the Kumasi Metropolis
Konwuruk, Niib; Sheringham Borquaye, Lawrence; Darko, Godfred; Dodd, Matt (Scientific African, 2021)The occurrence of heavy metals in urban soils is of great environmental concern due to the unwanted health effect associated with their excessive exposure. The study assessed levels of heavy metals (As, Cd, Cr, Cu, Fe, ... -
Distribution and bioaccessibility of metals in soils in public parks in peri-urban Calgary
Olariu, Gheorghe Romulus (2021-12-03)The concentrations and bioaccessibility of metals in peri-urban area of Calgary, Alberta, were assessed. Soil sampling was performed at 48 locations in public parks and playgrounds in peri-urban areas around the City of ... -
Bioaccessibility of metals in city park soils - city of Edmonton
Ehizojie, James Ibhadojerie (2014-11-28)Urban parks are widely used by Canadians for various leisure and sporting activities with children being the most exposed to any contaminants that may occur in the soils at playgrounds. Thus, a good understanding of soil ...