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Your search keyword '"D'ALESSANDRO W"' showing total 5 results
Start Over Author "D'ALESSANDRO W" Journal applied geochemistry
5 results on '"D'ALESSANDRO W"'

5. Hydrogen sulfide measurements in air by passive/diffusive samplers and high-frequency analyzer: A critical comparison

Author

Jacopo Cabassi, Sergio Calabrese, Franco Tassi, Walter D'Alessandro, Sergio Bellomo, Orlando Vaselli, Stefania Venturi, Francesco Capecchiacci, Venturi, S., Cabassi, J., Tassi, F., Capecchiacci, F., Vaselli, O., Bellomo, S., Calabrese, S., and D'Alessandro, W.

Subjects
Pollution, Spectrum analyzer, Air quality monitoring, 010504 meteorology & atmospheric sciences, Orders of magnitude (temperature), media_common.quotation_subject, Hydrogen sulfide, Active analyzers, Analytical chemistry, Passive/diffusive samplers, 010501 environmental sciences, Hydrogen sulphide, 01 natural sciences, chemistry.chemical_compound, Geochemistry and Petrology, Environmental Chemistry, 0105 earth and related environmental sciences, media_common, geography, geography.geographical_feature_category, Gaseous contaminants, Passive/diffusive sampler, chemistry, Volcano, Environmental chemistry, Gaseous contaminant, H2S in air, Active analyzer
Abstract

In this study, hydrogen sulfide (H2S) measurements in air carried out using (a) passive/diffusive samplers (Radiello® traps) and (b) a high-frequency (60 s) real-time analyzer (Thermo® 450i) were compared in order to evaluate advantages and limitations of the two techniques. Four different sites in urban environments (Florence, Italy) and two volcanic areas characterized by intense degassing of H2S-rich fluids (Campi Flegrei and Vulcano Island, Italy) were selected for such measurements. The concentrations of H2S generally varied over 5 orders of magnitude (from 101e103 mg/m3), the H2S values measured with the Radiello® traps (H2SR) being significantly higher than the average values measured by the Thermo® 450i during the trap exposure (H2STa), especially when H2S was

Published
2016
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