Organic pollutants in snow of urban and rural Russia and Finland

Poliakova, O.V.; Lebedev, A. T.; Hänninen, Osmo

doi:10.1080/02772240009358903

Cited by 30 publications

(11 citation statements)

References 3 publications

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“…NBBS is stable and persists in the environment. The substance was previously found in the environment in concentrations up to 100 mg/L [27], [28]. Therefore, environmental NBBS may accumulate in organisms.…”

Section: Discussionmentioning

confidence: 94%

Extracts from Pygeum africanum and Other Ethnobotanical Species with Antiandrogenic Activity

et al. 2006

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Extracts from Pygeum africanum, Serenoa repens and Cucurbita pepo are used in the treatment of benign prostatic hyperplasia (BPH) and prostate cancer (PCa). The activity of the androgen receptor (AR) is known to control growth of the prostate. Here, we examined extracts of these plants for their antiandrogenic activity using an AR responsive reporter gene assay for drug discovery. A selective dichloromethane extract from the stem barks of Pygeum africanum revealed the highest antiandrogenic effect. Bioactivity-directed fractionation of this extract led to the isolation of N-butylbenzenesulfonamide (NBBS) indicating that extracts of the stem bark of P. africanum harbour androgen antagonistic activity. This compound may provide a novel approach for the prevention and treatment of BPH and human PCa.

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Section: Discussionmentioning

confidence: 94%

Extracts from Pygeum africanum and Other Ethnobotanical Species with Antiandrogenic Activity

et al. 2006

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“…Phenol compounds such as 2,6-di-tert-butyl-4-methylphenol, 2,6-di-tert-butyl-4-ethylphenol and 6-tert-butyl-3-methylphenol were also found. These are polymeric compounds from the cellular walls of vegetation [36] which have also been identified in snow samples collected in Finland and Russia [39].…”

Section: Identification Of Biogenic Compoundsmentioning

confidence: 98%

“…Phthalate compounds, for example diethyl phthalate, often gave large peaks on the gas chromatograms. Although these compounds have been detected in environmental samples [39], they can also arise from laboratory surroundings, because phthalate compounds were sometimes detected in the blank samples.…”

Section: Fractionmentioning

confidence: 99%

Characterisation of organic compounds in aerosol particles from a Finnish forest by on-line coupled supercritical fluid extraction?liquid chromatography?gas chromatography?mass spectrometry

Shimmo

Jäntti

Aalto

et al. 2004

Analytical and Bioanalytical Chemistry

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During the European Union project Quantification of Aerosol Nucleation in the European Boundary Layer (QUEST), which began in spring 2003, atmospheric aerosol particles were collected in a Finnish Scots pine forest using a high-volume sampler. The organic compounds in the filter samples were then analysed by on-line coupled supercritical fluid extraction-liquid chromatography-gas chromatography-mass spectrometry (SFE-LC-GC-MS). The sample was first extracted by SFE. During LC the extracts were fractionated into three fractions according to polarity. The final separation was carried out by GC-MS. A fraction volume as high as 840 microL was transferred to the GC, using the partial concurrent eluent evaporation technique. The same instrumentation, with an in-situ SFE derivatisation method, was used to analyse organic acids. Major compounds such as n-alkanes and PAH were analysed quantitatively. Their concentrations were lower than those usually observed in urban areas or in other forest areas in Europe. The wind direction was one of the most important factors affecting changes in the daily concentrations of these compounds. Scots pine needles were analysed with the same system to obtain reference data for identification of biogenic compounds in aerosol particles. Other organic compounds found in this study included hopanes, steranes, n-alkanals, n-alkan-2-ones, oxy-PAH, and alkyl-PAH; some biogenic products, including oxidation products of monoterpenes, were also identified.

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“…The scheme can be adjusted depending on the load of a particular snow melting point, and also depending on the situation on the roads (Fig.1). Such an automated method of distributing snow has not yet found wide application, but it will soon become common for large megacities, and not just for small European cities [9][10][11]. But despite the fact that it is proposed to divide the territory of the city into zones, none of the sources mention the division of the city into zones depending on the type of development, which, in the opinion of the authors, is very important [8,[11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Zoning of the territory with snow removal using snow melting plants

et al. 2018

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In this paper, the issue of clearing the territory of snow with the use of snow melting units is being considered. The operating principle of the snow-melting stations is based on sewage heat) melting the snow collected in the snow collection chambers. Snow melt water mixed with wastewater is discharged into the collectors and transported to have a full treatment cycle at the wastewater treatment plant. Three problems of urban snow-melting process are considered. The solution of three problems is proposed: compiling a list of signs of mandatory snow removal zones; the allocation of the main zones corresponding to the proposed features; method of determining the amount of snow that is mandatory for export from the territory of the zone.

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Organic pollutants in snow of urban and rural Russia and Finland

Cited by 30 publications

References 3 publications

Extracts from Pygeum africanum and Other Ethnobotanical Species with Antiandrogenic Activity

Extracts from Pygeum africanum and Other Ethnobotanical Species with Antiandrogenic Activity

Characterisation of organic compounds in aerosol particles from a Finnish forest by on-line coupled supercritical fluid extraction?liquid chromatography?gas chromatography?mass spectrometry

Zoning of the territory with snow removal using snow melting plants

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