排序方式： 共有144条查询结果，搜索用时 187 毫秒
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da Silva DA Buzitis J Krahn MM Bícego MC Pires-Vanin AM 《Marine pollution bulletin》2006,52(2):175-183
This study reports the analysis of polycyclic aromatic compound (PAC) metabolites, as biomarkers of exposure to PACs in marine environment. PAC metabolites were measured in bile samples from 14 species of demersal fish caught in the São Sebastião Channel (SSC), SE Brazilian coastline. Naphthalene (NPH) equivalents, phenanthrene (PHN) equivalents, and benzo[a]pyrene (BaP) equivalents were quantified using a reverse-phase high-performance liquid chromatography coupled with fluorescence detection method. For all samples, the means (±standard deviation, n = 37) of concentrations obtained for NPH, PHN, and BaP equivalents were, respectively, 290,000 ± 200,000 ng/g, 18,000 ± 14,000 ng/g, and 970 ± 1900 ng/g. These results indicate recent exposure of these fish to PACs in their environment. In addition, two species (Cyclichthys spinosus and Prionotus nudigula) of fish were analyzed in order to investigate local sources of PAC contamination in the SSC and the influence of the petroleum terminal in fish caught in remote areas. The results showed that these fish species potentially migrate along the channel, especially P. nudigula. Correlations among groups of PAC metabolites indicate the same petrogenic source for NPH and PHN equivalents and a combustion source (e.g., automobile, ships) for BaP equivalents. The ratio BaP/PHN equivalents (0.05 ± 0.07, n = 37) confirms the predominance of petrogenic PACs for contamination by these chemicals in this region. 相似文献
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一、地调机构的产生及其规模一个国家的经济发展,离不开自然资源,而自然资源的有效开发利用需要系统的自然地理和历史的信息。十八世纪工业革命带来的通讯、交通和产业的迅猛发展增加了对未开垦的美洲、澳洲、非洲的开发呼声,为促进当地勘查业的发展,满足市场需求,必须开展地质填图以搞清矿产资源的分布,而在欧洲工业发展则要求 相似文献
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Brown MM Williams TD Chipman JK Katsiadaki I Sanders M Craft JA 《Marine environmental research》2008,66(1):127-130