Extraction techniques and clean-up procedures for the determination of pahs in sediments of the Ceará coast

Quimica nova

Correia, Leandro M.¹  Cavalcante, Rivelino M.¹  Nascimento, Ronaldo F.¹  Freire, George S. S.¹  Lima, Danielle M. de¹  Silveira, Edilberto R.¹  Viana, Rommel B.² 

[1] Universidade Federal do Ceará, Fortaleza, Brasil;Universidade de São Paulo, São Carlos, Brasil

关键词: extraction technique;    sediment;    PAHs.;   

DOI  :  10.1590/S0100-40422008000600019

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

Extraction and clean-up are essential pointsin polycyclic aromatic hydrocarbon (PAHs) analysis in a solid matrix. This workcompares extraction techniques and clean-up procedures for PAH analysis. PAHlevels, their toxicological significance and source were also evaluated in thewaters of the Cocó and Ceará rivers. The efficiency of PAH recoverywas higher for the soxhlet and ultrasonic techniques. PAH recovery varied from69.3 to 99.3%. Total PAH concentration (ΣHPA)varied from 720.73 to 2234.76 µgkg-1 (Cocó river) and 96.4 to 1859.21 µgkg-1 (Ceará river). The main PAH sources are pyrolytic processesand the levels were classified as medium so that adverse effects are possible.

【 授权许可】

CC BY