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Identification and quantification of anthropogenic nanomaterials in urban rain and runoff using single particle-inductively coupled plasma-time of flight-mass spectrometryUrban rain and runoff are potential sources of anthropogenic nanomaterials (engineered and incidental, ENMs and INMs) to receiving waterbodies. However, there is currently a limited knowledge on the nature and concentration of anthropogenic NMs in urban rain and runoff and the current study aims to fill this knowledge gap. Runoff samples were collected from drainage outlets of two bridges (Quail Lane and Blossom Street) in Columbia, South Carolina, representing small and medium size bridges at different times over the duration of precipitation events. Rain samples were collected in the vicinity of the same bridges at the same time as the runoff. Two soil samples at depths of 0 to 3 and 3 to 15 cm were collected at each runoff sampling site to extract background natural NMs. The elemental composition of NMs in the rain, runoff, and soils were determined using single particle-inductively coupled plasma-time of flight-mass spectroscopy (SP-ICP-TOF-MS). Nanomaterials were sorted into groups of similar elemental composition and compared among samples using a two-stage agglomerative hierarchical clustering. Several classes of anthropogenic NMs were identified in the urban rain and runoff, including iron, vanadium, titanium, barium, zinc, copper, chromium, tungsten, antimony, tin, and lead-bearing NMs, most likely due to traffic-relatedmore »Free, publicly-accessible full text available February 17, 2023
Temporal variation in TiO2 engineered particle concentrations in the Broad River during dry and wet weathersFree, publicly-accessible full text available February 1, 2023
Free, publicly-accessible full text available June 1, 2023
Elemental fingerprints in natural nanomaterials determined using SP-ICP-TOF-MS and clustering analysisFree, publicly-accessible full text available October 1, 2022