William Selbig, Amanda Cox and Roger Bannerman discuss the development of a new water sample collection system, to improve representation of solids entrained in urban stormwater by integrating water-quality samples from the entire water column, rather than a single, fixed point. They report that development of this new depth-integrated sample arm (DISA) was able to mitigate stratification bias resulting in a more accurate representation of stormwater-borne solids than traditional fixed-point sample collection methods.
Verification of a depth-integrated sample arm as a means to reduce solids stratification bias in urban stormwater sampling
William R. Selbig, Amanda Cox and Roger T. Bannerman
DOI: 10.1039/C2EM10999A
Bojeong Kim and colleagues from Virginia Tech and Duke University have investigated the characterization and environmental implications of nano- and larger TiO2 particles in sewage sludge and soils amended with sewage. They examined the most likely route of engineered TiO2 particles entering the soil environment by using analytical electron microscopic techniques, and provided detailed information regarding their occurrence, fate and behaviour in the sewage sludge materials and in mesocosm soils that had been amended with biosolid products.
Characterization and environmental implications of nano- and larger TiO2 particles in sewage sludge, and soils amended with sewage sludge
Bojeong Kim, Mitsuhiro Murayama, Benjamin P. Colman and Michael F. Hochella
DOI: 10.1039/C2EM10809G
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