Characteristics and Performances of a Nanostructured Material for Passive Samplers of Gaseous Hg.

ABSTRACT: Passive air samplers (PASs) have been used for mapping gaseous mercury concentration in extensive areas. In this work, an easy-to-use and -prepare gold nanoparticle (NP)-based PAS has been investigated. The PAS is constituted of a microfibrous quartz disk filter impregnated of gold NP photo-growth on TiO₂ NPs (Au@TiO₂) and used as gaseous mercury adsorbing material. The disk was housed in a cylinder glass container and subjected to an axial diffusive sampling. The adsorbed mercury was measured by thermal desorption using a Tekran^® instrument. Different amounts of Au@TiO₂ (ranging between 4.0 and 4.0 × 10^-3 mg) were deposited by drop-casting onto the fibrous substrate and assessed for about 1 year of deployment in outdoor environment wi

SUBMITTER: Avossa J 

PROVIDER: S-EPMC7660345 | biostudies-literature | 2020 Oct

REPOSITORIES: biostudies-literature