Detection of C in environmental water using dispersive liquid-liquid micro-extraction followed by high-performance liquid chromatography.

The wide application of fullerene C nanoparticles would inevitably lead to their release into the environment. In order to evaluate the environment risks of C and the subsequent effects on ecosystem health, a reliable quantitative methodology of C should be established. In this study, a rapid pretreatment method called low-density solvent-based dispersive liquid-liquid micro-extraction (DLLME) combined high-performance liquid chromatography-UV detector (HPLC-UV) was developed to detect C in environmental water.

Separation and determination of silver nanoparticle in environmental water and the UV-induced photochemical transformations study of AgNPs by cloud point extraction combined ICP-MS.

In this study, cloud point extraction (CPE) combined inductively coupled plasma mass spectrometry (ICP-MS) was used to determinate silver nanoparticles (AgNPs) in environmental water. AgNPs dispersed in water could be extracted into surfactant phase based on optimized CPE parameters which including pH, incubation temperature and equilibration time, the content of nonionic surfactants (Triton X-114, TX-114) and NaSO. Good separation results of AgNPs and ionic silver Ag(I) in aqueous environment was obtained with the addition of NaSO when the concentration of Ag(I) was lower than ten times of AgNPs.

Analysis of silver and gold nanoparticles in environmental water using single particle-inductively coupled plasma-mass spectrometry.

The production and use of engineering nanomaterials (ENMs) leads to the release of manufactured or engineered nanoparticles into environment. The quantification and characterization of ENMs are crucial for the assessment of their environmental fate, transport behavior and health risks to humans. To analyze the size distribution and particle number concentration of AgNPs and AuNPs in environmental water and track their stability at low number concentration, a systematic study on SP-ICPMS was presented.

A bibliometric analysis of research on the risk of engineering nanomaterials during 1999-2012.

A bibliometric analysis based on the Science Citation Index Expanded (SCI-Expanded) from the Web of Science was carried out to provide insights into research activities and tendencies of the global risk of engineering nanomaterials (ENMs) from 1999 to 2012. The number of publications per year has increased steadily since approximately 2006. The USA produced 41.