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- Lu, Xiaoyan; Lu, Taotao; Zhang, Haojing; Shang, Zhongbo; Chen, Jiuyan; Wang, Ying; Li, Deliang; Zhou, Yanmei; Qi, Zhichong
- Environmental science 2019 v.21 no.3 pp. 506-513
- calcium; cations; diatomaceous earth; electrostatic interactions; environmental science; graphene oxide; groundwater; ionic strength; kaolinite; moieties; montmorillonite; nanoparticles; oxygen; pH; soil; surface area; tartaric acid
- ... With the increase in production and wide application of graphene oxide (GO), colloidal GO particles are expectantly released into soil and groundwater, where a large number of mineral particles exist. In addition, the porewater chemistry (e.g. organic acid, valence of cation) is a neglected but important aspect to comprehensively investigate the fate of GO. The interactions of GO with three ubiqui ...
- Pattammattel, Ajith; Leppert, Valerie J.; Forman, Henry Jay; O'Day, Peggy A.
- Environmental science 2019 v.21 no.3 pp. 548-563
- X-radiation; X-ray absorption spectroscopy; air; carbon nanoparticles; carboxylic acids; chemical speciation; electron microscopy; environmental science; iron; metal ions; models; moieties; oxidation; oxygen; particulates; sorption; spectral analysis; surface area; toxicity
- ... Carbonaceous nanomaterials represent a significant portion of ultra-fine airborne particulate matter, and iron is the most abundant transition metal in air particles. Owing to their high surface area and atmospheric oxidation, carbon nanoparticles (CNP) are enriched with surface carbonyl functional groups and act as a host for metals and small molecules. Using a synthetic model, concentration-depe ...