Experimental determination of benzene uptake rate in Tenax TA diffusive samplers

Química Nova

Luci Carla Gheleri Andrietta²  Edson Tomaz¹  Ana Claudia Camargo De Lima Tresmondi¹  Marco Aurélio Cremasco¹ 

[1] ,Bioagri AmbientalPiracicaba SP ,Brasil

关键词: benzene;    uptake rate;    passive sampling;   

DOI  :  10.1590/S0100-40422010000500005

来源: SciELO

【 摘 要 】

This paper proposes a methodology to predict benzene uptake rate in ambient air, using passive samplers with Tenax TA. Variations in the uptake rate were found to occur as a function of the sampling time; and were greater at the beginning of sampling. An empirical model was obtained and values for uptake rate agree with literature. Concentration prediction errors can be minimized by using sampling times of 4 to 14 days, thus avoiding the influence of excessive uptake rates in the initial days and the influence of back diffusion at the end of the sampling period.

【 授权许可】

CC BY-NC   
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