scholarly journals MONITORAMENTO DE PESTICIDAS E OUTROS POLUENTES ORGÂNICOS EM RECURSOS HÍDRICOS UTILIZANDO DISPOSITIVOS DE MEMBRANAS SEMIPERMEÁVEIS

Author(s):  
FABRÍCIO VILELA PARREIRA ◽  
JULIANA FELISBERTO ALVES ◽  
GILBERTO CALDEIRA BANDEIRA DE MELLO ◽  
WILLER HUDSON POS ◽  
ZENILDE G. G. VIOLA ◽  
...  

Efetuou-se revisão de trabalhos de pesquisa sobre dispositivos de membranas semipermeáveis (DMSP), contendo trioleína para monitoramento de ambientes aquáticos. Os DMSP têm sido utilizados como amostradores passivos de pesticidas e outros poluentes orgânicos lipofílicos em água. Esses dispositivos têm-se mostrado eficientes na amostragem de água para análise de substâncias em níveis de traços e ultra-traços, tais como pesticidas organoclorados, organofosforados, piretróides, bifenilas policloradas, hidrocarbonetos aromáticos policíclicos, dioxinas, furanos e outras substâncias orgânicas apolares. Atenção especial é dada aos modelos para cálculo da taxa de amostragem e concentração dos analitos nos corpos d’água. A tecnologia de DMSP continua a ser pesquisa por cientistas ambientais que buscam a otimização das condições para exposição e análise. MONITORING OF PESTICIDE AND OTHER ORGANIC POLLUTANTS IN WATER SOURCES BY UTILIZING SEMIPERMEABLE MEMBRANE DEVICES Abstract A review of research works about semipermeable membrane devices (SPMD), containing triolein for aquatc environment monitoring was accomplished. The SPMD have been utilized as passive pesticide samplers and other lypophylic pollutants in water. Those devices have been efficient in sampling water for substance analysis in trace and ultra-trace levels, for organochlorine, organophosphorus pesticides, polychlorinated biphenyl, polycyclic aromatic hidrocarbons, dioxins, furans and other non polar organic substances. Special attention is given to models for sampling index calculation and concentration in water corps. The SPMD technology continues to be researched by environmental scientists that search the optimization of exposure conditions and analysis.

2012 ◽  
Vol 2012 ◽  
pp. 1-11 ◽  
Author(s):  
Heidi E. M. Scott ◽  
Julian Aherne ◽  
Chris D. Metcalfe

Polycyclic aromatic hydrocarbons (PAHs) are a concern due to their carcinogenicity and propensity for transboundary atmospheric transport. Ireland is located on the western periphery of Europe and assumed to receive clean Atlantic air. As such, it has been used as an atmospheric reference for comparison to other regions. Nonetheless, few studies have evaluated concentrations of PAHs within the Irish environment. In the current study, PAHs were measured at five upland (500–800 masl) headwater lake catchments in coastal regions around Ireland, remote from industrial point source emissions. Semipermeable membrane devices were deployed in lakes for a 6-month period in July 2009, and topsoils were sampled from each catchment during October 2010. The concentrations of PAHs were low at most study sites with respect to other temperate regions. Homologue groups partitioned between lake and soil compartments based on their molecular weight were: “lighter” substances, such as Phenanthrene and Fluorene, were found in higher proportions in lakes, whereas “heavier” compounds, such as Chrysene and Benz[a]anthracene, were more prominent in soils. Concentrations of PAHs were highest at the east coast sites, potentially due to contributions from historical transboundary and regional combustion sources.


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