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    Wyświetlanie 1-2 z 2
    Tytuł:
    Interdyscyplinarny charakter chemii sanitarnej
    Interdisciplinary Character of Sanitary Chemistry
    Autorzy:
    Szymański, K.
    Włodarczyk-Makuła, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1818165.pdf
    Data publikacji:
    2015
    Wydawca:
    Politechnika Koszalińska. Wydawnictwo Uczelniane
    Tematy:
    chemia sanitarna
    techniki analityczne
    układy sprzężone
    walidacja procedur badawczych
    monitoring środowiska
    mikrozanieczyszczenia
    emerging contaminants
    woda
    ścieki
    osady ściekowe
    odpady
    sanitary chemistry
    analytical techniques
    coupled systems
    validation of research procedure
    environmental monitoring
    micropollutants
    water
    wastewater
    sewage sludge
    waste
    Opis:
    Sanitary chemistry is a component of environmental chemistry, based on the issues of general, organic and instrumental chemistry. The level of chemistry development is important for the development of other scientific disciplines such as: environmental engineering or planning, design and protection of the environment. These disciplines are mentioned in the areas of technical, natural and agricultural sciences. As part of the sanitary chemistry research in two directions: the study of water and wastewater quality are conducted. The studies include an assessment of water quality of surface- and groundwater, which are the source of water supply for: population, industry and agriculture, water treatment processes and water monitoring. The wastewater research are concerning the wastewater introduced into the sewage system, wastewater treatment plants and to the receivers. The development of sanitary chemistry involves the development of analytical techniques and procedures in order to determine a greater number of pollutants in water and wastewater and enhancing the accuracy of compounds which has been already designated. Therefore, in framework of sanitary chemistry development following actions are performed: improvement of research procedures including the validation, design and construction of new measuring and control devices, automation of test equipment, including the coupled systems, determination of trace-level components: micro-pollutants, metabolic products, intermediate products, water and wastewater treatment, determination of "emerging contaminants", development of solvent-free techniques, minimization of cost, energy and the waste materials emission, the extension the scope of speciation analysis and their applications, development of biological methods in chemical analysis, introduction the continuous analysis into monitoring, improvement of the quality of chemical analysis results, statistical processing of chemical analysis, which allows on forecasting changes in water quality. Trends in the sanitary chemistry development in the world indicate a continuous improvement of analytical techniques and measurement and control appliances, the elaboration of new analytical procedures and develop existing ones.
    Źródło:
    Rocznik Ochrona Środowiska; 2015, Tom 17, cz. 1; 540-559
    1506-218X
    Pojawia się w:
    Rocznik Ochrona Środowiska
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Zastosowanie technik chromatograficznych do oznaczania 3,3’-dichlorobenzydyny w powietrzu na stanowiskach pracy
    The Use of Chromatographic Techniques for the Determination of 3,3-Dichlorobenzidine in Workplace Air
    Autorzy:
    Kowalska, J.
    Jeżewska, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1818006.pdf
    Data publikacji:
    2016
    Wydawca:
    Politechnika Koszalińska. Wydawnictwo Uczelniane
    Tematy:
    3-3 dichlorobenzydyna
    chromatografia cieczowa
    metoda analityczna
    stanowisko pracy
    analiza powietrza
    czynniki rakotwórcze
    3-3 dichlorobenzidine
    liquid chromatography
    analytical method
    workplace
    analysis of air
    carcinogen
    Opis:
    3,3'-Dichlorobenzidine (DCB), a chlorinated primary aromatic amine, is a grey to purple crystalline solid at room temperature. It is used primarily for the production of pigments for printing inks, textiles, paints, plastics and crayons. It is added as a compounding ingredient to rubber mixtures and plastics. It can also be used alone and in blends with 4,4'-methylenebis(2-chloroaniline) as a curing agent for liquid-stable polyurethane elastomers. 3,3-Dichlorobenzidine has been assigned a “Carc. 1B” hazard class, pursuant to Regulation EC No 1272/2008, and it can affect humans when inhaled and by passing through the skin. 3,3’-Dichlorobenzidine occurs in the working environment in Poland; however, there are no established methods for its determination at low concentration levels. Therefore, a sensitive method for the determination of DCB at the workplace air was being developed and presented in the paper. The sampling method is based on the adsorption of DCB on sulphuric acid-treated glass fiber filters. Sample preparation covers elution of the deposited substance from filter with water followed by sodium hydroxide, carrying out liquid-liquid extraction using toluene in order to enrich the analyte and solvent exchange to acetonitrile, after evaporation of toluene in a nitrogen stream. Determination of the amine in acetonitrile was carried out by means of liquid chromatography (HPLC) with diode assay detector (DAD). Chromatographic determination was conducted in a reverse phase system on Ultra C18 column (250 mm x 4.6 mm; 5 µm). The method developed in this study enables to determine the content of 3,3’-dichlorobenzidine in the presence of other hazardous substances, such as benzidine, aniline, 3,3’-dimethylbenzidine, 3,3’-dimethoxybenzidine, 4-aminoazobenzene and 4,4’-methylenebis(2-chloroaniline). A standard curve was prepared with reference to the sample preparation for the analysis, which shortens the analysis duration time and reduces the consumption of reagents. In the range of concentrations (1.42-28.4 µg /ml), the resulting standard curve is linear. This method makes it possible to determine the concentration of 3,3’-dichlorobenzidine in the air at a workplace within the concentration range of 0.002 to 0.039 mg/3 (for air sample volume of 720 L). Air samples are stable for at least ten days. The method is characterized by good overall precision of the examination (5.85%) and meets the criteria for the chemical agents measurement procedures, listed in EN 482. The limit of detection (LOD) amounts to 0.81 ng/ml, whereas the limit of quantitation (LOQ) is 2.44 ng/ml. The developed quantitative method for the determination of concentrations of 3,3’ dichlorobenzidine in workplace air can be used to assess the occupational risk associated with working in the presence of this carcinogen.
    Źródło:
    Rocznik Ochrona Środowiska; 2016, Tom 18, cz. 2; 746-757
    1506-218X
    Pojawia się w:
    Rocznik Ochrona Środowiska
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-2 z 2

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