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A detection method for detecting hydrogen sulfide gas in a workplace

A detection method and technology in the workplace, applied in the field of analysis, can solve the problems of insufficient sensitivity and accuracy of hydrogen sulfide gas, and achieve good selectivity, high accuracy, and good linear relationship

Active Publication Date: 2021-02-12
广东华晟安全职业评价有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the existing technical problems of insufficient sensitivity and accuracy in the detection of hydrogen sulfide gas in the air, the present invention provides a detection method for detecting hydrogen sulfide gas in the workplace, which can quickly and accurately detect trace amounts of hydrogen sulfide without being affected by other coexisting substances. Technical Effects of Interference

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A detection method for detecting hydrogen sulfide gas in a workplace, using a catalytic luminescence sensor device for detection, the device includes the following four systems:

[0028] (1) The reaction system is composed of a ceramic heating tube and a quartz tube (with gas inlet and outlet) sintered on the surface with a layer of nano-sensitive material for detecting hydrogen sulfide; (2) The temperature programming system controls and adjusts the reaction within the range of 200~500°C (3) The monochromator system uses 13 kinds of filters with a wavelength distribution of 400~745nm, which are used to select the detection wavelength and eliminate background interference; (4) The photoelectric detection and data processing system is used to detect and process weak chemical luminous signal;

[0029] The detection method specifically includes the following steps:

[0030] From the inlet of the reactor, air is passed through the reaction chamber through the injection val...

Embodiment 2

[0039] A detection method for detecting hydrogen sulfide gas in a workplace, using a catalytic luminescence sensor device for detection, the device includes the following four systems:

[0040] (1) The reaction system is composed of a ceramic heating tube and a quartz tube (with gas inlet and outlet) sintered on the surface with a layer of nano-sensitive material for detecting hydrogen sulfide; (2) The temperature programming system controls and adjusts the reaction within the range of 200~500°C (3) The monochromator system uses 13 kinds of filters with a wavelength distribution of 400~745nm, which are used to select the detection wavelength and eliminate background interference; (4) The photoelectric detection and data processing system is used to detect and process weak chemical luminous signal;

[0041] The detection method specifically includes the following steps:

[0042] From the inlet of the reactor, air is passed through the reaction chamber through the injection val...

Embodiment 3

[0051] A detection method for detecting hydrogen sulfide gas in a workplace, using a catalytic luminescence sensor device for detection, the device includes the following four systems:

[0052] (1) The reaction system is composed of a ceramic heating tube and a quartz tube (with gas inlet and outlet) sintered on the surface with a layer of nano-sensitive material for detecting hydrogen sulfide; (2) The temperature programming system controls and adjusts the reaction within the range of 200~500°C (3) The monochromator system uses 13 kinds of filters with a wavelength distribution of 400~745nm, which are used to select the detection wavelength and eliminate background interference; (4) The photoelectric detection and data processing system is used to detect and process weak chemical luminous signal;

[0053] The detection method specifically includes the following steps:

[0054] From the inlet of the reactor, air is passed through the reaction chamber through the injection val...

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Abstract

The invention discloses a detection method for detecting hydrogen sulfide gas in a workplace, which uses a catalytic luminescence sensor device for detection, and the device includes the following four systems: a reaction system, a program heating system, a monochromator system, photoelectric detection and data processing system, the detection method specifically includes the following steps: from the inlet of the reactor, air is passed through the reaction chamber through the injection valve at a steady flow rate of 100-300ml / min, the reaction temperature is controlled at 300-350°C during measurement, and a certain A large amount of the gas to be detected is injected into the sampling valve, carried by the air into the reaction chamber, and the generated catalytic luminescent signal is detected and processed by the photoelectric detection and data processing system. The detection method has the characteristics of high accuracy, good linear relationship, high sensitivity and good selectivity.

Description

technical field [0001] The invention relates to the technical field of analysis, in particular to a detection method for detecting hydrogen sulfide gas in a workplace. Background technique [0002] Hydrogen sulfide is a flammable, colorless gas with a typical smell of rotten eggs. It is generally the product of certain chemical reactions and natural protein decomposition processes. Industries exposed to more hydrogen sulfide mainly include sewage treatment, papermaking, petroleum processing, fertilizer manufacturing, chemical fiber manufacturing, and certain chemical raw material manufacturing. [0003] Humans mainly come into contact with hydrogen sulfide through the respiratory system, inhale hydrogen sulfide, diffuse into the lungs, enter the blood circulation system, and then quickly oxidize to sulfate through the liver and excrete it through urine. There is a possibility of death when the concentration is greater than 500ppm. At low concentrations, hydrogen sulfide ca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/76
CPCG01N21/766
Inventor 刘斌李会武汪丰梅齐向上王程媛何春燕
Owner 广东华晟安全职业评价有限公司