|
|||||
|
|
Detection and Sizing of Ti-Containing Particles in Recreational Waters Using Single Particle ICP-MS |
|
| Authors: | Arjun K. Venkatesan Robert B. Reed Sungyun Lee Xiangyu Bi David Hanigan Yu Yang James F. Ranville Pierre Herckes Paul Westerhoff |
| Affiliation: | 1.School of Sustainable Engineering and the Built Environment,Arizona State University,Tempe,USA;2.Center for Clean Water Technology, Department of Civil Engineering,Stony Brook University,Stony Brook,USA;3.Department of Chemistry and Geochemistry,Colorado School of Mines,Golden,USA;4.Environmental System Research Division,Korea Institute of Machinery and Materials,Daejeon,Republic of Korea;5.Department of Civil and Environmental Engineering,University of Nevada,Reno,USA;6.School of Molecular Sciences,Arizona State University,Tempe,USA |
| Abstract: | Single particle inductively coupled plasma mass spectrometry (spICP-MS) was used to detect Ti-containing particles in heavily-used bathing areas of a river (Salt River) and five swimming pools. Ti-containing particle concentrations in swimming pools ranged from 2.8?×?103 to 4.4?×?103 particles/mL and were an order of magnitude lower than those detected in the Salt River. Measurements from the Salt River showed an 80% increase in Ti-containing particle concentration over baseline concentration during peak recreational activity (at 16:00 h) in the river. Cloud point extraction followed by transmission electron microscopy with energy dispersive X-ray analysis confirmed presence of aggregated TiO2 particles in river samples, showing morphological similarity to particles present in an over-the-counter sunscreen product. The maximum particle mass concentration detected in a sample from the Salt River (659 ng/L) is only slightly lower than the predicted no effect concentration for TiO2 to aquatic organisms ( |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ | |