https://ogma.newcastle.edu.au/vital/access/ /manager/Index en-au 5 https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:55146 Tue 16 Apr 2024 15:15:23 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:49212 Sun 07 May 2023 09:30:32 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:39211 2 = 0.873), oxides of Al (R² = 0.361) and Fe (R² = 0.126), and contents of clay (R² = 0.061) and silt (R² = 0.432) were positively correlated with the distribution coefficient (K_d) of glyphosate, while alkaline pH (R² = −0.389) and sand content (R² = −0.343) negatively correlated with the K_d values. Well-decomposed soil OM, consisting of C–H and Cdouble bondO functional groups, enhanced glyphosate sorption, whereas partially decomposed/undecomposed OM facilitated desorption process. Desorption of glyphosate was favoured in seven of nine selected soils due to adverse hysteresis effects (HI = 0.74–1.0). The higher values of leachability index (0.31–1.0) and groundwater ubiquity score (1.60–3.44) calculated for the urban soils indicated the great leaching potential of glyphosate from soil surface to waterbodies. Use of glyphosate on impermeable surfaces might directly contaminate water sources and affect potability of water, non-target biota, and food safety. The calculated values of cancer risk (10⁻⁸‒10⁻¹²) and hazard quotient (1.47 x 10⁻⁶‒4.12 x 10⁻⁶) suggested that the human exposure to glyphosate-contaminated soils through dermal, ingestion and inhalation pathways might cause negligible or no carcinogenic and non-carcinogenic risks to humans. Therefore, glyphosate should be applied judiciously at recommended concentrations in the urban landscapes, mainly on impervious surfaces, to minimize its health impacts in humans and environment.]]> Fri 27 May 2022 10:34:27 AEST ]]>