Department of Microbiology, University of Uyo, Uyo, Nigeria.
Environ Monit Assess. 2011 May;176(1-4):99-107. doi: 10.1007/s10661-010-1569-2. Epub 2010 Jun 22.
The distribution of polycyclic aromatic hydrocarbons (PAHs) in epipelic and benthic sediments from Iko River estuary mangrove ecosystem has been investigated. Total PAHs ranged from 6.10 to 35.27 mg/kg dry weight. Quantitative difference between the total PAHs in epipelic and benthic sediments showed that the benthic sediment known for higher capability to serve as sink for chemical pollutants accumulated less PAHs. This implies that PAHs in the epipelic sediment may plausibly be from industrial sources via runoff and/or of biogenic origin. A strong pyrolytic source fingerprint has been detected with slight influence of petrogenic sources. Total organic carbon normalized PAHs (sum of 16 PAHs, 59.7 to 372.4 mg/kg OC) were under (except for ES3 and BS3) the threshold effects concentrations (TEC, 290 mg/kg OC). Total PAHs in Iko River estuary sediments were in the range between ERL and ERM.
已研究了伊科河口红树林生态系统中表生和底栖沉积物中多环芳烃 (PAHs) 的分布情况。总多环芳烃含量范围为 6.10 至 35.27 毫克/公斤干重。表生和底栖沉积物中总多环芳烃的定量差异表明，以更高的能力作为化学污染物汇的底栖沉积物积累的多环芳烃较少。这意味着表生沉积物中的多环芳烃可能来自工业源，通过径流和/或生物源。已经检测到强烈的热解源特征指纹，只有轻微的生源源影响。总有机碳归一化多环芳烃（16 种多环芳烃之和，59.7 至 372.4 毫克/公斤 OC）低于（ES3 和 BS3 除外）阈值效应浓度（TEC，290 毫克/公斤 OC）。伊科河口沉积物中的总多环芳烃处于 ERL 和 ERM 之间。
