Técnicas de extrações e procedimentos de clean-up para a determinação de hidrocarbonetos policílicos aromáticos (HPA) em sedimentos da costa do Ceará

Química Nova

Rivelino M. Cavalcante²  Danielle M. De Lima²  Leandro M. Correia²  Ronaldo F. Nascimento²  Edilberto R. Silveira¹  George S. S. Freire¹  Rommel B. Viana¹ 

[1] ,Universidade Federal do Ceará Departamento de Química Analítica e Físico Química Fortaleza CE ,Brasil

关键词: extraction technique;    sediment;    PAHs;   

DOI  :  10.1590/S0100-40422008000600019

来源: SciELO

【 摘 要 】

Extraction and clean-up are essential points in polycyclic aromatic hydrocarbon (PAHs) analysis in a solid matrix. This work compares extraction techniques and clean-up procedures for PAH analysis. PAH levels, their toxicological significance and source were also evaluated in the waters of the Cocó and Ceará rivers. The efficiency of PAH recovery was higher for the soxhlet and ultrasonic techniques. PAH recovery varied from 69.3 to 99.3%. Total PAH concentration (ΣHPA) varied from 720.73 to 2234.76 µg kg-1 (Cocó river) and 96.4 to 1859.21 µg kg-1 (Ceará river). The main PAH sources are pyrolytic processes and the levels were classified as medium so that adverse effects are possible.

【 授权许可】

CC BY-NC   
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