echemi logo
  • Product
  • Supplier
  • Inquiry
    Home > Chemicals Industry > Chemical Technology > Determination of Alkyl Mercury in Solid Waste Leachate Purge and Trap/Gas Chromatography-Cold Atomic Fluorescence Method (1)

    Determination of Alkyl Mercury in Solid Waste Leachate Purge and Trap/Gas Chromatography-Cold Atomic Fluorescence Method (1)

    • Last Update: 2022-03-12
    • Source: Internet
    • Author: User
    Search more information of high quality chemicals, good prices and reliable suppliers, visit

    Scope of application

    This method is applicable to solid waste leachate methylmercury and ethylmercury assay containing the wall

    When the sampling volume of the extract is 45 mL, the detection limits of methyl mercury and ethyl mercury are 0.
    01 ng/L and 0.
    02 ng/L, respectively


    Second, the principle of the method

    The extract was distilled with a distillation apparatus, and the distillate was derivatized with sodium tetrapropyl boride and measured by an alkyl mercury analyzer
    Qualitatively by retention time and quantified by external standard method


    Reagents and materials

    Unless otherwise specified, analytical reagents conforming to national standards are used for analysis, and the experimental water is newly prepared ultrapure water or distilled water

    (1) Hydrochloric acid : pure superior grade

    (2) Copper sulfate : analytically pure

    (3) Acetic acid : pure superior grade

    (4) Sodium acetate : excellent grade pure

    (5) Sodium tetrapropyl boride: analytically pure

    Dissolve 1.
    0 g of sodium tetrapropyl boride in 100 mL of KOH solution with a mass fraction of 2% at 0°C, shake well, and dispense into 4 mL brown glass bottles, and then immediately place them in a refrigerator at -18°C for storage and use Temporarily thaw before


    (6) Standard solution: standard solution of methylmercury and ethylmercury, ρ=1.
    00mg/L, and the solvent is pure water


    (7) Concentrated sulfuric acid: pure superior grade

    (8) Concentrated nitric acid: pure superior grade

    (9) Extractant: Add a mixture of concentrated sulfuric acid and concentrated nitric acid with a mass ratio of 2:1 to ultrapure water (about 2 drops of 1L water) to make the pH 3.


    Four, instruments and equipment

    (1) Alkyl mercury analyzer: It consists of a purge and trap system, a gas chromatograph, a thermal cracking system, and a cold atomic fluorescence spectrometer

    (2) Distillation instrument: fraction collection device with ice bath

    (3) Flip the oscillator

    Five, pre-treatment

    (1) Preparation of leaching solution

    "Semi-Volatile Organic Compound Analysis Technology-Preparation of Sulfuric Acid and Nitric Acid from Leachate"

    (2) Steaming letter

    Accurately measure 45mL pure water (or sample, need to add 0.
    4% HC1) in a distillation flask, add 100mL saturated CuSO
    4 solution, add 4.
    4mL ultrapure water and 0.
    6mL acetic acid/sodium acetate buffer solution with pH 6.
    0 to the receiving flask ( 2mol/L), distill at 125°C for 3.
    5~4h, distill out about 80% of the distillate (35~36mL), the distillate receiving flask should be placed in a water tank with an ice bath


    (3) Derivative

    Pour all the distillate into a 42 mL sample bottle, then add 50 μm of sodium tetrapropyl boride for derivatization, and analyze it on the machine after 20 minutes

    Related links: Semi-volatile organic compounds analysis technology-leaching solution preparation sulfuric acid and nitric acid method



    This article is an English version of an article which is originally in the Chinese language on and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

    Related Articles

    Contact Us

    The source of this page with content of products and services is from Internet, which doesn't represent ECHEMI's opinion. If you have any queries, please write to It will be replied within 5 days.

    Moreover, if you find any instances of plagiarism from the page, please send email to with relevant evidence.