Validation of atmospheric aerosols parallel sampling in a multifold device

Cristina Maria Oliveira; M.f. Camoes; Paulina Bigus; A.a. Fachado; R.b. Silva

doi:10.1007/s10661-015-4615-2

Validation of atmospheric aerosols parallel sampling in a multifold device

Abstract

In this work, particulate matter was collected using an active sampling system consisting of a PM10 (<10 μm) inlet coupled to a multifold device containing six channels, connected to a vacuum pump. Each channel was equipped with a filter holder fitted with adequately chosen filters. The system was fixed on a metallic structure, which was placed on the roof of the laboratory building, at the Faculty of Sciences, in Lisbon. Sampling took place under flow-controlled conditions. Aerosols were extracted from the filters with water, in defined conditions, and the water-soluble fraction was quantified by ion chromatography (IC) for the determination of inorganic anions (Cl−, NO3 − and SO4 2−). Equivalent sampling through the various channels was validated. Validation was based on the metrological compatibility of the content results for the various filters. Ion masses are metrologically equivalent when their absolute difference is smaller than the respective expanded uncertainty.When this condition is verified, the studied multifold device produces equivalent samples.

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Authors (5)

Cristina Maria Oliveira
- Universidade de Lisboa .
M.f. Camoes
- Universidade de Lisboa .
Paulina Bigus
A.a. Fachado
- Universidade de Lisboa .
R.b. Silva
- Universidade de Lisboa .

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Keywords

EQUIVALENT SAMPLING . VALIDATION . ATMOSPHERIC AEROSOLS . ION CHROMATOGRAPHY. UNCERTAINTY

Details

Category:: Articles
Type:: artykuł w czasopiśmie wyróżnionym w JCR
Published in:: ENVIRONMENTAL MONITORING AND ASSESSMENT no. 187, pages 380 - 389,
ISSN: 0167-6369
Language:: English
Publication year:: 2015
Bibliographic description:: Oliveira C., Camoes M., Bigus P., Fachado A., Silva R.: Validation of atmospheric aerosols parallel sampling in a multifold device// ENVIRONMENTAL MONITORING AND ASSESSMENT. -Vol. 187, (2015), s.380-389
DOI:: Digital Object Identifier (open in new tab) 10.1007/s10661-015-4615-2
Verified by:: Gdańsk University of Technology