当前位置： SCI文献检索 > ENVIRONMENTAL GEOCHEMISTRY AND HEALTH期刊下所有文献 > Seasonal occurrence, source evaluation and ecological risk assessment of polycyclic aromatic hydrocarbons in industrial and agricultural effluents discharged in Wadi El Bey (Tunisia).

Seasonal occurrence, source evaluation and ecological risk assessment of polycyclic aromatic hydrocarbons in industrial and agricultural effluents discharged in Wadi El Bey (Tunisia).

Abstract：

:Polycyclic aromatic hydrocarbons are of great concern due to their persistence, bioaccumulation and toxic properties. The occurrence, source and ecological risk assessment of 26 polycyclic aromatic hydrocarbons in industrial and agricultural effluents affecting the Wadi El Bey watershed were investigated by means of gas chromatographic/mass spectrometric analysis (GC/MS). Total PAHs (∑ 26 PAH) ranged from 1.21 to 91.7 µg/L. The 4- and 5-ring compounds were the principal PAHs detected in most of 5 sites examined. Diagnostic concentration ratios and molecular indices were performed to identify the PAH sources. Results show that PAHs could originate from petrogenic, pyrolytic and mixed sources. According to the ecotoxicological assessment, the potential risk associated with PAHs affecting agricultural and industrial effluents ranged from moderate to high for both aquatic ecosystem and human health. The toxic equivalency factor (TEF) approach indicated that benzo[a]pyrene and benz[a]anthracene were the principal responsible for carcinogenic power of samples.

journal_name

Environ Geochem Health

journal_title

Environmental geochemistry and health

authors

Gdara I,Zrafi I,Balducci C,Cecinato A,Ghrabi A

doi

10.1007/s10653-018-0075-2

subject

Has Abstract

pub_date

2018-08-01 00:00:00

pages

1609-1627

issue

4

eissn

0269-4042

issn

1573-2983

pii

10.1007/s10653-018-0075-2

journal_volume

40

pub_type

杂志文章

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