NB/T 10763-2021 Active Industry standards-Energy

NB/T 10763-2021 The determination of heavy metal mercury in solid biomass fuel using direct solid injection method

Publish Date: 2021-11-16 Implement Date: 2022-05-16 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: NB/T 10763-2021

Standard Type: Industry standards

Standard Status: Active

is_force_gb: no

CCS Name: Biomass energy

ICS Name: Chemical analysis

Publish Date: 2021-11-16

Implement Date: 2022-05-16

Pages: 10 pages

Scope

The method for determining the heavy metal mercury in solid biomass fuels is specified, which is suitable for the determination of total mercury in solid biomass fuels. After the solid biomass samples are introduced into the combustion thermal decomposition unit by a sample boat, the various forms of mercury are reduced to elemental mercury and released as mercury vapor after drying and thermal decomposition. The mercury vapor is carried by the carrier gas into the cold atomic absorption spectrometer. Through the high-frequency modulated Zeeman background correction technology, the mercury vapor absorbs the characteristic spectral line at 253.7 nm. Within a certain concentration range, the absorption intensity is proportional to the concentration of mercury, enabling the direct determination of heavy metal mercury.