Sample preparation for analysis of enviroument objects based on electrochemical activation phenomenon of aqueous medium-rapid, reliable, accessiable, cheap

L. Svintsova, Nina Nikolaevna Chernyshova

    Результат исследований: Материалы для книги/типы отчетовМатериалы для конференции

    1 Цитирования (Scopus)

    Аннотация

    Stripping voltammetry (SVA) is one of the best determination methods of Cd, Hg, Cu, Pb, Zn, Sb, Bi, As in environment objects. However, to reduce interfering effect of accompanying organic substances a state of sample pretreatment is necessary. The method of electrochemical sample pretreatment suggested and developed by us, is based on electrochemical activation phenomenon (EchA) of aqueous solutions. The method consists of EChPt of water samples containing inorganic salts by alternating current of definite form in anodic chamber of special construction membranous electrolyzer. It permits to reduce negative influence of matrix effects and to determine, for example, volatile elements without high temperature heating the solution. Stabilization of working the mercuric and solid indicator electrodes has been shown. This mode is used for determination of element forms in natural waters by SVA. The reasons of positive effects of EChPt were investigated. They are bound up with polyfactoric action of electric current on aqueous solutions. It results in appearing the high active chemical compounds, changing the energetic, structural, physicochemical parameters of the system EChPt sample - indicator electrode. Suggested method can be easily automatized and used in systems of water quality control in particular for flowing injection analysis. Toxic metals have been determinated by SVA in various waters, suspensions, bottom sediments, biological subjects using SVA. Reassuring results have been obtained also for atomic-absorbing and atomic-emissive spectroscopy.

    Язык оригиналаАнглийский
    Название основной публикацииProceedings - KORUS 2000: 4th Korea-Russia International Symposium on Science and Technology
    ИздательInstitute of Electrical and Electronics Engineers Inc.
    Страницы210-213
    Число страниц4
    Том1
    ISBN (печатное издание)0780364864, 9780780364868
    DOI
    СостояниеОпубликовано - 2000
    Событие4th Korea-Russia International Symposium on Science and Technology, KORUS 2000 - Ulsan, Республика Корея
    Продолжительность: 27 июн 20001 июл 2000

    Другое

    Другое4th Korea-Russia International Symposium on Science and Technology, KORUS 2000
    СтранаРеспублика Корея
    ГородUlsan
    Период27.6.001.7.00

    ASJC Scopus subject areas

    • Clinical Biochemistry
    • Computer Networks and Communications
    • Biotechnology
    • Civil and Structural Engineering
    • Mechanics of Materials
    • Electronic, Optical and Magnetic Materials
    • Materials Chemistry
    • Surfaces, Coatings and Films

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