Tutorial V :Analysis on the New Environmental Standard- “Water Quality—Determination of Alkyl Mercury—Purge and Trap Gas Chromatography/Cold Vapor Atomic Fluorescence Spectrometry” and its Practical Workflow

Shanghai New International Expo Center (SNIEC) Conference Room E1-M13
  • Analysis on the New Environmental Standard- “Water Quality—Determination of Alkyl Mercury—Purge and Trap Gas Chromatography/Cold Vapor Atomic Fluorescence Spectrometry” and its Practical Workflow

  • Laiguo Chen

    Esensing analytical Technology Co., Ltd.

    Speaker: Laiguo Chen, Ph.D., researcher at the South China Institute of Environmental Sciences of the Ministry of Environmental Protection,master supervisor. Mainly engaged in the analysis of typical pollutants in the environment, international implementation, environmental chemical processes and human exposure levels; air pollution causes and control strategies; pollutant emission factors and emissions accounting research. He has presided over 4 National Natural Science Foundations, presided over or participated in 5 national environmental protection public welfare projects, presided over the first and second pollution source census projects, participated in 1 national key special project, presided over and completed environmental protection standards, “Water Quality-Determination of Alkyl Mercury-Purge and Trap gas chromatography cold vapor atomic fluorescence spectrometry” and also hosted or participated in various projects of the Central Public Welfare Research Institute and local technical consulting. He has published more than 100 papers in domestic and foreign journals, including more than 50 SCI papers; one invention patent; a number of local technical consulting projects have been applied to local environmental management.

    Analysis on the New Environmental Standard- “Water Quality—Determination of Alkyl Mercury—Purge and Trap Gas Chromatography/Cold Vapor Atomic Fluorescence Spectrometry” and its Practical Workflow

    Alkyl mercury is a type of organometallic compounds, formed by combining alkyl and mercury. It includes methylmercury, ethylmercury and other forms. Methylmercury, as the most concerned organomercury species, has a strong neurotoxicity which can easily lead to biomagnification in a food chain. The neurotoxicity in ethylmercury is considered to have some similarity to methylmercury. It can do harm to human being’s central nervous system, kidneys and immune system. And co-exposure to methylmercury and ethylmercury may increase neurotoxicity on mammals.
    Alkyl mercury is an important monitoring index in the Chinese water quality standards and emission standards. China will soon publish the new analysis standard for alkyl mercury in water: Water quality—Determination of alkyl mercury—Purge and trap gas chromatography/Cold vapor atomic fluorescence spectrometry. This standard has lower detection limits (MDL of methylmercury and ethylmercury are both 0.02 ng/L), better stability, easier operating procedure and a wider application range.
    Because this method is very different from the current national standard method in the principle, pretreatment, generation and elimination of interference, instrument, etc, there may be some problems in its practical application. To this end, we will conduct a detailed analysis of this standard so as to help analysts better grasp and apply this standard.
    During this tutorial, we will make examples from sample collection, sample preparation, as well as using the reliable instrument (MERX Automatic Alkyl Mercury Analyzer, Brooks Rand Inc.) that we used mainly during the standard method validation, to show the working flow on how to adapt the standard to generate reliable lab results.

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