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Method for analyzing hydrogen chloride in nitrogen by using standard curve method

A standard curve method and hydrogen chloride technology, applied in the field of hydrogen chloride analysis, can solve problems such as difficult value determination

Pending Publication Date: 2022-03-18
上海神开气体技术有限公司
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Problems solved by technology

Improve the accuracy of analysis results by overcoming the defect of difficult sample determination

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  • Method for analyzing hydrogen chloride in nitrogen by using standard curve method

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Embodiment Construction

[0015] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described here are only used to explain the present invention, and are not intended to limit the scope of the present invention. Also, in the following structures, descriptions of well-known structures and techniques are omitted to avoid unnecessarily obscuring the concept of the present invention.

[0016] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "top / bottom" etc. are based on the orientation or positional relationship shown in the drawings. The positional relationship is only for the convenience of describing the present invention and simplifying the descriptio...

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Abstract

The invention discloses a method for analyzing hydrogen chloride in nitrogen by using a standard curve method, which is characterized by comprising the following steps of: fitting data of a plurality of gradient hydrogen chloride samples to obtain a standard curve by using a correlation equation and taking the concentration of the hydrogen chloride samples as a Y axis and the absorbance corresponding to the concentration of the hydrogen chloride samples as an X axis, when the concentration of the hydrogen chloride sample is within the concentration range of 10-60 ppm, 3-4 sample standard points are taken within the range, and when the concentration of the hydrogen chloride sample exceeds the concentration limit of 60 ppm, the standard points are sampled at the intervals of 40-50 ppm. According to the invention, the concentration of hydrogen chloride in nitrogen is measured by a linear regression method, which is more accurate and rapid.

Description

technical field [0001] The invention relates to the field of hydrogen chloride analysis, in particular to a method for analyzing hydrogen chloride in nitrogen by using a standard curve method. Background technique [0002] Hydrogen chloride is a very active corrosive gas, which is easy to adsorb on metal surfaces and is easily affected by moisture in the environment. When analyzing hydrogen chloride, it is often found that the standards of each concentration are not linear, and it is difficult to determine the value of the sample. Therefore, a more accurate method is needed for analysis and determination. Contents of the invention [0003] In order to overcome the above-mentioned defects of the prior art, one of the purposes of the present invention is to provide a method for analyzing hydrogen chloride in nitrogen using the standard curve method. The accuracy of analysis results is improved by overcoming the defect of difficult sample determination. [0004] A method ut...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/3504
CPCG01N21/3504G01N2021/3595G01N2021/3509
Inventor 孙子文刘艳
Owner 上海神开气体技术有限公司
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