Mercury vapor analyzer based on capillary lamp with natural mercury isotope composition in the transverse Zeeman effect: capabilities and prospects

International Conference and Early Career Scientists School on Environmental Observations, Modeling and Information Systems: ENVIROMIS-2018

生态环境科学;计算机科学

Tatur, V.V.^1 ; Tikhomirov, A.A.^1

Institute of Monitoring of Climatic and Ecological Systems SB RAS, Tomsk

634055, Russia^1

关键词: Atomic absorption spectroscopy;    Emission intensity;    Emission spectrums;    Experimental investigations;    Isotope compositions;    Natural isotopes;    Natural mercury;    Resonance wavelengths;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/211/1/012067/pdf
DOI  :  10.1088/1755-1315/211/1/012067

来源: IOP

【 摘 要 】

A mercury-vapor analyzer which is based on a method of atomic absorption spectroscopy is proposed to operate in the atmospheric air. The source of emission used in the instrument is a low-pressure capillary lamp filled with mercury of natural isotope composition. Features of its emission spectrum are described under the transverse Zeeman effect in the vicinity of a resonance wavelength of 253.7 nm. The emission intensities π and the sums of σ components of this lamp are studied. The results of experimental investigations of the analyzer operating modes are presented, and systematic measurement errors are estimated (±30 ng/m3). Some options of improving the analyzer response are demonstrated.