A Single Mercury Isotope Atmospheric Generation System
A mercury isotope and generation system technology, which is applied in gas generating devices, biological testing, material inspection products, etc., can solve the problems of time-consuming, labor-intensive, high cost, and high background value, so as to improve test efficiency, reduce test cost, and have good repeatability Effect
Inactive Publication Date: 2016-04-13
INST OF GEOCHEM CHINESE ACADEMY OF SCI
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Problems solved by technology
This method can provide better physiological growth conditions for plants, but it is costly and difficult to achieve the requirement of producing a stable single atmospheric mercury isotope
For example: at a constant temperature of 10°C to 30°C, the volatile concentration of mercury is 5.552 to 29.504ngml -1 Therefore, using the isotopic mercury source produced by the volatilization method has low efficiency, stability cannot be guaranteed, and the change of mercury vapor concentration cannot be accurately adjusted. The "wall effect" of the room will adsorb a large amount of mercury, resulting in excessive background values in repeated tests. High, continuous discharge of a large amount of mercury vapor, time-consuming and labor-intensive and easy to cause secondary pollution
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[0027] The technical solutions of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0028] 1 principle
[0029] Such as figure 1 As shown, a single mercury isotope atmospheric generation system consists of three parts: mercury vapor generator, atmospheric mercury and plant exchange system, and atmospheric mercury isotope concentration online detection system;
[0030] The mercury vapor generator consists of SnCl 2 Solution inlet 1, 202 h 2+ Solution inlet 2, vacuum pump 3, zero gas inlet 4, activated carbon column 5, waste liquid outlet 6, gas-liquid separator 7, and Sodalime drying pipe 8 are connected in sequence; the function of the mercury vapor generator is to generate a single mercury isotope atmosphere, SnCl 2 solution, 202 Hg 2+ The solution enters the gas-liquid separator 7, and at the same time, the zero gas enters from the other port of the gas-liquid separator 7, and the ...
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Abstract
The invention discloses a single mercury isotope atmosphere generating system which is composed of a mercury vapor generator, an atmospheric mercury and plant exchange system and an on-line concentration detection system for atmospheric mercury isotopes. The system has he low cost, can continuously generate isotope mercury vapor (xxxHg0) with the low concentration, high stability, high controllability and high utilization efficiency, and also has the characteristics of portability, smartness, convenience and fastness in installation, high mobility, wide application range and the like.
Description
technical field [0001] The invention belongs to the technical field of stable mercury isotope addition, and relates to a single mercury isotope atmospheric generation system, in particular to an efficient and stable single mercury isotope atmospheric generation system and its application. Background technique [0002] Mercury is the only heavy metal element in the atmosphere that can be transported over long distances as a gaseous element, and has strong biological toxicity, so it is considered a global pollutant (Fengetal., 2010; Lindbergetal., 2007; Selin, 2009) . Mercury exists widely in trace levels in all circles of the earth. The main sources of mercury in the atmosphere include anthropogenic emissions and natural sources (Streets et al., 2005; Streets et al., 2009). Among them, the annual release from natural sources accounts for two-thirds of the total global emissions. Compared with anthropogenic emissions, the current estimation of natural process emissions has gr...
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IPC IPC(8): B01J7/00G01N33/48G01N33/24G01N33/00
Inventor 冯新斌颜子云王衡
Owner INST OF GEOCHEM CHINESE ACADEMY OF SCI