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Polycyclic aromatic musk compounds in sewage treatment plant effluents of Canada and Sweden--first results 总被引:8,自引:0,他引:8
Polycyclic musk fragrances (PMF) are widely used fragrances for cosmetics and other personal and household care products. Quantitative data on PMF (HHCB-Galaxolide, AHTN-Tonalide, ATTI-Traseolide, AHMI-Phantolide, ADBI-Celestolide, and DPMI-Cashmeran) and the most prominent nitro musks (Musk Xylene-MX, and Musk Ketone-MK) in different wastewater treatment effluents in Canada and Sweden are presented to provide preliminary information on the variations within the emission pattern of these compounds. In all samples HHCB and AHTN were detected at concentrations of up to 1300 and 520 ngl(-1), respectively. ADBI, AHMI were also present, but close to the detection limit. The other PMF DPMI, ATTI, and more surprisingly musk ketone and musk xylene were not detected in any sample analysed. In comparison the samples from Canada were contaminated at a higher level than the Swedish samples, by a maximum factor of ca 10 for HHCB and AHTN. 相似文献
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Summary The problem of the electromagnetic field distribution, which is described by Helmholtz equation, is solved by treating the finite difference approximation. The field of H-polarization is studied on a bounded region consisting of blocks with different electrical conductivities separated by interfaces of a general form. 相似文献
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A polymer-homologous series of nitrogen-containing compounds, tentatively identified as N-pentyl alkyl amines or N-butyl alkyl amides, with the alkyls ranging from dodecyl to octadecyl, was detected in fish off Nova Scotia, Canada. The origin of these compounds is not known. 相似文献
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Distribution of PACs in surficial sediments and bioavailability to mussels, Mytilus edulis of Halifax Harbour 总被引:1,自引:0,他引:1
Hellou J Steller S Zitko V Leonard J King T Milligan TG Yeats P 《Marine environmental research》2002,53(4):357-379
Surficial sediments and blue mussels were collected around the perimeter of Halifax Harbour. Samples were analysed for the levels and fingerprint of polycyclic aromatic compounds (PACs). The objective was to explore the relationship between contaminant profiles in sediments and in mussels and to explore the possibility of deducing their sources, pattern of deposition and circulation in the harbour. Combustion derived compounds predominated in both sets of samples, with more variability observed in the level of petroleum derived hydrocarbons in mussel samples. Biota-sediment accumulation factors (BSAF, dry/dry wt.) varied throughout the harbour, ranging from means of 0.006 to 1.26, where generally fluoranthene displayed the highest BSAF. Sediments and mussels give complementary views of the geographical distribution of contaminants, they reflect the state of benthic and pelagic habitats. Results observed for Halifax Harbour are discussed from the perspective of published data. 相似文献
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