Mercury monitoring method
A technology for mercury analysis and measurement components, which is applied in the preparation of test samples, etc., can solve the problems of mercury loss and impact on the detection accuracy of mercury content, and achieve the effects of saving use costs, no moisture interference, and improving measurement accuracy
Inactive Publication Date: 2014-03-05
BEIJING SDL TECH
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[0008] However, when the above method is used to remove the moisture in the carrier gas, the condensed water will carry a certain amount of analyte components, that is to say, a small amount of mercury will be lost, which seriously affects the detection accuracy of the mercury content in the sample gas.
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[0030] The core of the present invention is to provide a mercury monitoring method, which can minimize the measurement error of mercury in the sample gas.
[0031] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with devices, methods, drawings and specific embodiments.
[0032] Please refer to figure 2 with image 3 , figure 2 It is a flowchart of a mercury monitoring method in an embodiment of the present invention; image 3 It is a structural block diagram of a mercury monitoring device in an embodiment of the present invention; wherein, image 3 The solid line in the center represents the flow path of the sample gas, the dotted line represents the flow path of the carrier gas, and the dotted line represents the control circuit.
[0033] The present invention provides a mercury monitoring method. The implementation of the mer...
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The invention discloses a mercury monitoring method which comprises an enrichment desorption unit and a mercury analysis measurement device. The mercury monitoring method specially comprises the following steps: firstly, introducing a sample gas to the enrichment desorption unit for enriching mercury; secondly, purging a system pipeline by using a dry gas, then heating the enrichment desorption unit to ensure that the mercury enriched inside the enrichment desorption unit is desorbed and released; and finally, introducing a carrier gas to the enrichment desorption unit, and conveying the released mercury to the mercury analysis measurement device for desorption and measurement. According to the mercury monitoring method provided by the invention, after mercury enrichment is finished, before desorption and measurement are started, the system pipeline is purged, thus water remained in the pipeline system can be discharged in a purging process, and a water remover part in the mercury monitoring device in the prior art can be removed, the carrier gas carrying the desorbed mercury does not need to pass through the water remover, the loss of the mercury when the water is removed from the carrier gas can be reduced, the interference problem of water to mercury measurement is avoided, the measurement precision is improved, and the use cost is saved.
Description
technical field [0001] The invention relates to the technical field of environmental detection, in particular to a mercury monitoring method. Background technique [0002] With the development of industry, heavy metals are widely used in industry, agriculture, medicine, etc., and the environmental pollution caused by various heavy metals is becoming more and more serious. The harm of heavy metals to the environment and human beings has attracted more and more attention. [0003] Heavy metals are highly toxic, not easy to be metabolized in the environment, easy to be bioaccumulated and have biomagnification effects, etc., which have far-reaching harm to the environment and organisms. Among them, mercury and its compounds are the most toxic among all heavy metals. the first. Mercury exists in liquid form at room temperature, and the vaporized inorganic mercury can circulate to any corner of the world with the atmospheric circulation, which is a global pollutant. After the va...
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IPC IPC(8): G01N1/28
Inventor 韩占恒
Owner BEIJING SDL TECH