Detection and Sizing of Ti-Containing Particles in Recreational Waters Using Single Particle ICP-MS.
Bull Environ Contam Toxicol
; 100(1): 120-126, 2018 Jan.
Article
em En
| MEDLINE
| ID: mdl-29164274
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 1600 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 (< 1 µg/L).
Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Titânio
/
Poluentes Químicos da Água
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Monitoramento Ambiental
Tipo de estudo:
Diagnostic_studies
Idioma:
En
Revista:
Bull Environ Contam Toxicol
Ano de publicação:
2018
Tipo de documento:
Article
País de afiliação:
Estados Unidos