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BIBTEX RIS

Construção de amostrador passivo de baixo custo para determinação de dióxido de nitrogênio

2006; Brazilian Chemical Society; Volume: 29; Issue: 2 Linguagem: Inglês

10.1590/s0100-40422006000200029

ISSN

1678-7064

Autores

Wanessa R. Melchert, Arnaldo Alves Cardoso,

Tópico(s)

Indoor Air Quality and Microbial Exposure

Resumo

A LOW-COST PASSIVE SAMPLER FOR MONITORING NITROGEN DIOXIDE IN AIR.A new passive sampling system for monitoring NO 2 in air has been developed to measure gas concentrations in indoor and outdoor air.The sampler is inexpensive, and easy to construct and operate.Nitrogen dioxide forms a derivative after reaction with a filter coated with triethanolamine and ethyleneglycol.The nitrogen dioxide derivative is extracted from the filter, and the concentration is determined by colorimetry.To test the sampler for measuring ambient level nitrogen dioxide, measurements were carried out inside homes and in a range of workplace environments.

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