Flame photometry-based methods for detecting and analyzing toxic gases

Abstract

This invention discloses a method for detecting and analyzing toxic gases based on flame photometry. The method includes: determining the types and quantities of constituent atoms of each toxic gas according to its molecular formula; determining the characteristic elements of each toxic gas, and further determining the typical characteristic values ​​of each toxic gas; each toxic gas uniquely corresponds to a set of typical characteristic values; the set of typical characteristic values ​​is calculated from the types and quantities of atoms corresponding to the characteristic elements; measuring the constituent atoms and content of the gas to be tested using flame photometry, calculating the measured characteristic values ​​of the gas to be tested, and obtaining the set of measured characteristic values ​​of the gas to be tested; comparing the obtained set of measured characteristic values ​​with known sets of typical characteristic values; if the set of measured characteristic values ​​completely corresponds to a certain set of typical characteristic values, then the gas to be tested can be determined to be the toxic gas corresponding to that set of typical characteristic values.

Description

Technical Field

[0001] This invention belongs to the field of detection technology, specifically relating to a method for detecting and analyzing toxic gases based on flame photometry. Background Technology

[0002] In fields such as coal mining, petroleum, chemical industry, fire protection, nuclear energy, and military, leaks of toxic or flammable gases are prone to occur due to operational errors, harsh environments, and aging equipment. Once a flammable gas leak occurs, it can easily cause a large-scale fire and an explosion, and toxic gas leaks often have a significant impact on human health.

[0003] The flame photometry method for detecting and analyzing toxic gases can, in principle, only identify the types of related marker elements such as phosphorus, sulfur, nitrogen, arsenic, chlorine, and carbon contained in the toxic gas, but cannot identify the specific material composition of the toxic gas. Especially in special applications such as civil defense engineering, while oral gas detectors can confirm the presence of toxic gases in the environment, the highly sensitive flame photometry detectors inside civil defense engineering facilities urgently need to determine the specific material composition of the toxic gas by using the typical characteristic values ​​of different toxic gases. Summary of the Invention

[0004] In view of this, some embodiments disclose a method for detecting and analyzing toxic gases based on flame photometry, which includes:

[0005] Based on the molecular formula of the poison gas, determine the types and quantities of atoms that make up each poison gas.

[0006] The characteristic elements of each poison gas are determined, and then the typical characteristic values ​​of each poison gas are determined; then each poison gas uniquely corresponds to a typical characteristic value set; the typical characteristic value set is calculated from the types and quantities of atoms corresponding to the characteristic elements.

[0007] The composition and content of the gas to be tested are measured by flame photometry, and the characteristic values ​​of the gas to be tested are calculated to obtain the set of characteristic values ​​of the gas to be tested.

[0008] The obtained set of measured characteristic values ​​was compared with the known set of typical characteristic values;

[0009] If the measured characteristic value set corresponds completely to a certain typical characteristic value set, then the gas to be tested can be determined to be the specific toxic substance component corresponding to that typical characteristic value set.

[0010] Some embodiments disclose a flame photometry-based method for detecting and analyzing toxic gases, with typical eigenvalue sets represented as [x1, x2, ..., x]. k , ..., x T ]; where x k Let be the k-th typical eigenvalue, T be the number of eigenvalues, and be a natural number greater than 0;

[0011] Among them, the typical eigenvalue x k The mass ratio x of different characteristic elements i-j ,Right now:

[0012] x k =x i-j ;

[0013] Where, x i-j Calculate using the following formula:

[0014]

[0015] Where i and j represent the feature elements i and j; n i n is the number of atoms of characteristic element i. j M represents the number of atoms of characteristic element j. i M represents the relative atomic mass of characteristic element i. j x is the relative atomic mass of characteristic element j. i-j It represents the mass ratio of feature element i to feature element j.

[0016] Some embodiments disclose a flame photometry-based method for detecting and analyzing toxic gases, including sarin, soman, VEX, Lewisite, mustard gas, cyanogen chloride, and hydrogen cyanide.

[0017] Some embodiments disclose a flame photometry-based method for detecting and analyzing toxic gases. The characteristic elements of sarin are carbon, phosphorus, and fluorine. Typical characteristic value sets for sarin include the carbon-to-phosphorus mass ratio and the phosphorus-to-fluorine mass ratio, expressed as [x...]. C-P x P-F ], where x C-P The range is 1.396 to 2.327, x P-F The values ​​range from 1.467 to 1.793.

[0018] Some embodiments disclose a flame photometry-based method for detecting and analyzing toxic gases. The characteristic elements of soman are carbon, phosphorus, and fluorine. Typical characteristic value sets of soman include the carbon-to-phosphorus mass ratio and the phosphorus-to-fluorine mass ratio, expressed as [x...]. C-P x P-F ], where x C-P The range is 2.443 to 4.072, x P-F The values ​​range from 1.467 to 1.793.

[0019] Some embodiments disclose a flame photometry-based method for detecting and analyzing toxic gases. The characteristic elements of VEX are carbon, sulfur, and phosphorus. Typical characteristic value sets for VEX include the carbon-to-sulfur mass ratio and the sulfur-to-phosphorus mass ratio, expressed as [x...]. C-S x S-P ], where x C-S The range is 3.708 to 6.180, x S-PThe range is 0.932 to 1.139.

[0020] Some embodiments disclose a flame photometry-based method for detecting and analyzing toxic gases. The characteristic elements of Lewis agents are carbon, arsenic, and chlorine. Typical characteristic value sets for Lewis agents include the carbon-arsenic mass ratio and the arsenic-chlorine mass ratio, expressed as [x...]. C-As x As-Cl ], where x C-As The values ​​are 0.289–0.481, 0.577–0.962, or 0.866–1.443, x As-Cl The value ranges from 0.634 to 0.775.

[0021] Some embodiments disclose a flame photometry-based method for detecting and analyzing toxic gases. The characteristic elements of mustard gas are carbon, sulfur, and chlorine. Typical characteristic value sets for mustard gas include the carbon-sulfur mass ratio and the sulfur-chlorine mass ratio, expressed as [x...]. C-S x S-Cl ], where x C-S The range is 1.348 to 2.247, x S-Cl The value ranges from 0.407 to 0.497.

[0022] Some embodiments disclose a flame photometry-based method for detecting and analyzing toxic gases. The characteristic elements of cyanogen chloride are carbon, nitrogen, and chlorine. Typical characteristic value sets for cyanogen chloride include the carbon-nitrogen mass ratio and the chlorine-carbon mass ratio, expressed as [x...]. C-N x Cl-C ], where x C-N The range is 0.772 to 1.286, x Cl-C The values ​​range from 1.476 to 3.247.

[0023] Some embodiments disclose a flame photometry-based method for detecting and analyzing toxic gases. The characteristic elements of hydrogen cyanide are carbon and nitrogen. Typical characteristic value sets for hydrogen cyanide include the carbon-nitrogen mass ratio, expressed as [x...]. C-N ], where x C-N The range is 0.772 to 1.286.

[0024] The present invention discloses a toxic gas detection and analysis method based on flame photometry. By using flame photometry, the type and content of characteristic elements in the gas to be tested can be accurately determined. By comparing the calculated characteristic value set with the set typical characteristic value set, the gas to be tested can be quickly and accurately identified and its category determined. Detailed Implementation

[0025] The term "embodiment" used herein, as an example, is not necessarily to be construed as superior to or better than other embodiments. Performance testing in the embodiments of this application, unless otherwise specified, employs conventional testing methods in the art. It should be understood that the terminology used in this application is merely for describing particular implementations and is not intended to limit the scope of this disclosure.

[0026] Unless otherwise stated, the technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; other experimental methods and technical means not specifically mentioned in this application refer to experimental methods and technical means commonly used by one of ordinary skill in the art.

[0027] The terms “basic” and “approximately” used in this document are to describe small fluctuations. For example, they can mean less than or equal to ±5%, such as less than or equal to ±2%, such as less than or equal to ±1%, such as less than or equal to ±0.5%, such as less than or equal to ±0.2%, such as less than or equal to ±0.1%, such as less than or equal to ±0.05%. Numerical data presented or expressed in range format in this document are used for convenience and brevity only, and should therefore be flexibly interpreted to include not only the explicitly listed values ​​that define the range, but also all independent values ​​or subranges contained within that range. For example, a numerical range of “1–5%” should be interpreted to include not only the explicitly listed values ​​from 1% to 5%, but also the independent values ​​and subranges within the indicated range. Thus, this numerical range includes independent values ​​such as 2%, 3.5%, and 4%, and subranges such as 1%–3%, 2%–4%, and 3%–5%, etc. This principle also applies to ranges that list only one value. Furthermore, this interpretation applies regardless of the width of the range or the characteristics described. Furthermore, the numerical ranges and units of the numerical results disclosed in the embodiments of this application are consistent.

[0028] In this document, including in the claims, conjunctions such as "comprising," "including," "with," "having," "containing," "involving," and "accommodating" are understood to be open-ended, meaning "including but not limited to." Only the conjunctions "consisting of" and "composed of" are closed conjunctions.

[0029] To better illustrate the content of this application, numerous specific details are provided in the following detailed embodiments. Those skilled in the art should understand that this application can be implemented even without certain specific details. In the embodiments, some methods, means, instruments, and devices well-known to those skilled in the art are not described in detail in order to highlight the main points of this application.

[0030] Without conflict, the technical features disclosed in the embodiments of this application can be combined arbitrarily, and the resulting technical solution belongs to the content disclosed in the embodiments of this application.

[0031] In some embodiments, the flame photometry-based method for detecting and analyzing toxic gases includes:

[0032] Based on the molecular formula of the poison gas, determine the types and quantities of atoms that make up each poison gas.

[0033] The characteristic elements of each poison gas are determined, and then the typical characteristic values ​​of each poison gas are determined; then each poison gas uniquely corresponds to a typical characteristic value set; the typical characteristic value set is calculated from the types and quantities of atoms corresponding to the characteristic elements.

[0034] Flame photometry is used to measure the constituent atoms and content of the gas to be tested, calculate the characteristic values ​​of the gas to be tested, and obtain the set of characteristic values ​​of the gas to be tested. Flame photometry is a method of quantitative elemental analysis that uses a flame as an excitation source to excite the atoms of the element to be tested, and uses a photoelectric detection system to measure the intensity of characteristic radiation emitted by the excited element.

[0035] The obtained set of measured characteristic values ​​was compared with the known set of typical characteristic values;

[0036] If the measured characteristic value set corresponds completely to a certain typical characteristic value set, then the gas to be tested can be determined to be the specific toxic substance component corresponding to that typical characteristic value set.

[0037] In some implementations, a typical set of eigenvalues ​​is represented as [x1, x2, ..., x...]. k , ..., x T ]; where x k Let be the k-th typical eigenvalue, T be the number of eigenvalues, and be a natural number greater than 0;

[0038] Among them, the typical eigenvalue x k The mass ratio x of different characteristic elements i-j ,Right now:

[0039] x k =x i-j ;

[0040] Where, x i-j Calculate using the following formula:

[0041]

[0042] Where i and j represent the feature elements i and j; n i n is the number of atoms of characteristic element i. j M represents the number of atoms of characteristic element j. i M represents the relative atomic mass of characteristic element i. j x is the relative atomic mass of characteristic element j. i-jIt represents the mass ratio of feature element i to feature element j.

[0043] Typically, due to the technical characteristics of flame photometry, the mass of nitrogen in the gas being tested measured by flame photometry does not include the background mass of nitrogen contained in ambient air. Therefore, when calculating the mass ratio of nitrogen to other characteristic elements, it is not necessary to deduct the background mass of nitrogen contained in ambient air. However, the mass of carbon in the gas being tested measured by flame photometry includes the background mass of carbon contained in ambient air. Therefore, when calculating the mass ratio of carbon to other characteristic elements, it is necessary to use it in conjunction with a carbon dioxide sensor to deduct the background mass of carbon contained in ambient air.

[0044] In some embodiments, the types of poison gas include sarin, soman, VEX, Lewisite, mustard gas, cyanogen chloride, and hydrogen cyanide.

[0045] In some embodiments, the characteristic elements of sarin are carbon, phosphorus, and fluorine. Typical characteristic value sets for sarin include the carbon-to-phosphorus mass ratio and the phosphorus-to-fluorine mass ratio, expressed as [x...]. C-P x P-F ], where x C-P The range is 1.396 to 2.327, x P-F The value ranges from 1.467 to 1.793. The molecular formula of sarin is C4H. 10 FO2P, x C-P =4×12.011 / 30.974=1.551,x P-F =30.974 / 18.998=1.630. Considering that there will be systematic errors in the measurement results during the actual testing process, the typical characteristic values ​​are corrected. The correction coefficients include the lower limit coefficient and the upper limit coefficient. x C-P The lower limit coefficient is 0.9, and the upper limit coefficient is 1.5, resulting in x. C-P The range is 1.396 to 2.327, x P-F The lower limit coefficient is 0.9, and the upper limit coefficient is 1.1, resulting in x. P-F The range is 1.467 to 1.793. When the characteristic elements of the gas to be tested obtained by flame photometry are only carbon, phosphorus, and fluorine, and the mass ratio of carbon to phosphorus is between 1.396 and 2.327, and the mass ratio of phosphorus to fluorine is between 1.467 and 1.793, it is considered that the measured characteristic value set of the gas to be tested completely corresponds to the typical characteristic value set, and the gas to be tested can be determined to be sarin.

[0046] In some embodiments, the characteristic elements of soman are carbon, phosphorus, and fluorine, and the typical characteristic value set of soman includes the carbon-to-phosphorus mass ratio and the phosphorus-to-fluorine mass ratio, expressed as [x C-P x P-F ], where x C-PThe range is 2.443 to 4.072, x P-F The values ​​range from 1.467 to 1.793. The molecular formula of soman is C7H. 16 FO2P, then x C-P =7×12.011 / 30.974=2.714,x P-F =30.974 / 18.998=1.630. Considering that there will be systematic errors in the measurement results during the actual testing process, the typical characteristic values ​​are corrected. The correction coefficients include the lower limit coefficient and the upper limit coefficient. x C-P The lower limit coefficient is 0.9, and the upper limit coefficient is 1.5, resulting in x. C-P The range is 2.443 to 4.072, x P-F The lower limit coefficient is 0.9, and the upper limit coefficient is 1.1, resulting in x. P-F The range is 1.467 to 1.793. When the characteristic elements of the gas to be tested obtained by flame photometry are only carbon, phosphorus, and fluorine, and the mass ratio of carbon to phosphorus is between 2.443 and 4.072, and the mass ratio of phosphorus to fluorine is between 1.467 and 1.793, it is considered that the measured characteristic value set of the gas to be tested completely corresponds to the typical characteristic value set, and the gas to be tested can be determined to be Soman.

[0047] In some embodiments, the characteristic elements of VEX are carbon, sulfur, and phosphorus, and the typical characteristic value set of VEX includes the carbon-sulfur mass ratio and the sulfur-phosphorus mass ratio, expressed as [x C-S x S-P ], where x C-S The range is 3.708 to 6.180, x S-P The values ​​range from 0.932 to 1.139. The molecular formula of Viex is C0.05. 11 H 26 NO2PS, then x C-S =11×12.011 / 32.065=4.120,x S-P =32.065 / 30.974=1.035. Considering the systematic errors in the measurement results during actual testing, the typical characteristic values ​​are corrected. The correction coefficients include a lower limit coefficient and an upper limit coefficient. x C-S The lower limit coefficient is 0.9, and the upper limit coefficient is 1.5, resulting in x. C-S The range is 3.708 to 6.180, x S-P The lower limit coefficient is 0.9, and the upper limit coefficient is 1.1, resulting in x. S-PThe range is 0.932 to 1.139. When the characteristic elements of the gas to be tested obtained by flame photometry are only carbon, sulfur, and phosphorus, and the mass ratio of carbon to sulfur is between 3.708 and 6.180, and the mass ratio of sulfur to phosphorus is between 0.932 and 1.139, it is considered that the measured characteristic value set of the gas to be tested completely corresponds to the typical characteristic value set, and the gas to be tested can be identified as VIX.

[0048] In some embodiments, the characteristic elements of Lewis agents are carbon, arsenic, and chlorine. Typical characteristic value sets for Lewis agents include the carbon-arsenic mass ratio and the arsenic-chlorine mass ratio, expressed as [x...]. C-As x As-Cl ], where x C-As The values ​​are 0.289–0.481, 0.577–0.962, or 0.866–1.443, x As-Cl The value ranges from 0.634 to 0.775. Lewis agents typically have three molecular structures: C2H2AsCl3, C4H4AsCl3, and C6H6AsCl3. Therefore, Lewis agents have three sets of typical characteristic values. When the molecular formula is C2H2AsCl3, x... C-As =2×12.011 / 74.922=0.321,x As-Cl =74.922 / 3 / 35.453=0.704; When the molecular formula is C4H4AsCl3, x C-As =4×12.011 / 74.922=0.641,x As-Cl =74.922 / 3 / 35.453=0.704; When the molecular formula is C6H6AsCl3, x C-As =6×12.011 / 74.922=0.962,x As-Cl =74.922 / 3 / 35.453=0.704; Considering that there will be systematic errors in the measurement results during the actual testing process, the typical characteristic values ​​are corrected. The correction coefficients include the lower limit coefficient and the upper limit coefficient, x C-As The lower limit coefficient is 0.9, and the upper limit coefficient is 1.5, resulting in x. C-As The values ​​are 0.289–0.481, 0.577–0.962, or 0.866–1.443, x As-Cl The lower limit coefficient is 0.9, and the upper limit coefficient is 1.1, resulting in x. As-Cl The value ranges from 0.634 to 0.775. When the characteristic elements of the gas to be tested obtained by flame photometry are only carbon, arsenic, and chlorine, and the mass ratio of carbon to arsenic is in the ranges of 0.289–0.481, 0.577–0.962, or 0.866–1.443, and the mass ratio of arsenic to chlorine is in the range of 0.932–1.139, it is considered that the measured characteristic value set of the gas to be tested completely corresponds to the typical characteristic value set, and the gas to be tested can be determined to be Lewisite.

[0049] In some embodiments, the characteristic elements of mustard gas are carbon, sulfur, and chlorine. Typical characteristic value sets for mustard gas include the carbon-sulfur mass ratio and the sulfur-chlorine mass ratio, expressed as [x...]. C-S x S-Cl ], where x C-S The range is 1.348 to 2.247, x S-Cl The value ranges from 0.407 to 0.497. The molecular formula of mustard gas is C4H8Cl2S, then x... C-S =4×12.011 / 32.065=1.498,x S-Cl =32.065 / 35.453=0.452. Considering the systematic errors in the measurement results during actual testing, the typical characteristic values ​​are corrected. The correction coefficients include a lower limit coefficient and an upper limit coefficient. x C-S The lower limit coefficient is 0.9, and the upper limit coefficient is 1.5, resulting in x. C-S The range is 1.348 to 2.247, x S-Cl The lower limit coefficient is 0.9, and the upper limit coefficient is 1.1, resulting in x. S-Cl The range is 0.407 to 0.497. When the characteristic elements of the gas to be tested obtained by flame photometry are only carbon, sulfur, and chlorine, and the mass ratio of carbon to sulfur is between 1.348 and 2.247, and the mass ratio of sulfur to chlorine is between 0.407 and 0.497, it is considered that the measured characteristic value set of the gas to be tested completely corresponds to the typical characteristic value set, and the gas to be tested can be determined to be mustard gas.

[0050] In some embodiments, the characteristic elements of cyanogen chloride are carbon, nitrogen, and chlorine, and the typical characteristic value set of cyanogen chloride includes the carbon-nitrogen mass ratio and the chlorine-carbon mass ratio, expressed as [x C-N x Cl-C ], where x C-N The range is 0.772 to 1.286, x Cl-C The value ranges from 1.476 to 3.247. The molecular formula of cyanogen chloride is CNCl, then x... C-N =12.011 / 14.007=0.857, x Cl-C =35.453 / 12.011=2.952. Considering the systematic errors in the measurement results during actual testing, the typical characteristic values ​​are corrected. The correction coefficients include a lower limit coefficient and an upper limit coefficient. x C-N The lower limit coefficient is 0.9, and the upper limit coefficient is 1.5, resulting in x. C-N The range is 0.772 to 1.286, x Cl-C The lower limit coefficient is 0.5, and the upper limit coefficient is 1.1, resulting in x. Cl-CThe range is 1.476 to 3.247. When the characteristic elements of the gas to be tested obtained by flame photometry are only carbon, nitrogen, and chlorine, and the mass ratio of carbon to nitrogen is in the range of 0.772 to 1.286 and the mass ratio of chlorine to carbon is in the range of 1.476 to 3.247, it is considered that the measured characteristic value set of the gas to be tested completely corresponds to the typical characteristic value set, and the gas to be tested can be determined to be cyanogen chloride.

[0051] In some embodiments, the characteristic elements of hydrogen cyanide are carbon and nitrogen, and the typical characteristic value set of hydrogen cyanide includes the carbon-nitrogen mass ratio, expressed as [x C-N ], where x C-N The value ranges from 0.772 to 1.286. The molecular formula of hydrogen cyanide is HCN, then x... C-N =12.011 / 14.007=0.857. Considering the systematic errors in the measurement results during actual testing, the typical characteristic values ​​are corrected. The correction coefficients include a lower limit coefficient and an upper limit coefficient. x C-N The lower limit coefficient is 0.9, and the upper limit coefficient is 1.5, resulting in x. C-N The range is 0.772 to 1.286. When the characteristic elements of the gas to be tested obtained by flame photometry are only carbon and nitrogen, and the mass ratio of carbon to nitrogen is in the range of 0.772 to 1.286, it is considered that the measured characteristic value set of the gas to be tested completely corresponds to the typical characteristic value set, and the gas to be tested can be determined to be hydrogen cyanide.

[0052] In summary, the typical characteristic value groups of sarin, soman, VEX, Lewisite, mustard gas, cyanogen chloride, and hydrogen cyanide are shown in Table 1 below:

[0053] Table 1 List of typical eigenvalue groups

[0054]

[0055] The technical details are further illustrated below with reference to the embodiments.

[0056] Example 1

[0057] The characteristic element atoms and contents of three groups of test gases were measured using flame photometry. The results are shown in Table 2 below. The carbon content in the three groups of test gases is the value after deducting the background carbon content of carbon dioxide in ambient air.

[0058] Table 2 List of characteristic element atoms and their contents in the gas to be tested

[0059] First group of gases to be tested The second group of gases to be tested The third group of gases to be tested Carbon content 68 Carbon content 53 Carbon content 60 Phosphorus content 43 Arsenic content 77 Sulfur content 42 Fluorine content 27 Chlorine content 110 chlorine content 93

[0060] From Table 2, we can see that the carbon-phosphorus ratio of the first group is 68 / 43 = 1.581, and the phosphorus-fluorine ratio is 43 / 27 = 1.593. The carbon-phosphorus ratio and phosphorus-fluorine ratio of the first group are both within the range of typical characteristic values ​​of sarin. Moreover, the characteristic elements of the gas to be tested in the first group are only carbon, phosphorus and fluorine. Therefore, it can be determined that the gas to be tested in the first group is sarin.

[0061] The carbon-arsenic ratio of the second group is 53 / 77 = 0.688, and the arsenic-chlorine ratio is 77 / 110 = 0.7. Both the carbon-arsenic ratio and the arsenic-chlorine ratio of the second group are within the typical characteristic values ​​of Lewis agents. Furthermore, the characteristic elements of the gas tested in the second group are only carbon, arsenic, and chlorine. Therefore, the gas tested in the second group can be identified as Lewis agent, and its specific molecular formula can also be identified as C4H4AsCl3.

[0062] The carbon-sulfur ratio of the third group is 60 / 42 = 1.429, and the sulfur-chlorine ratio is 42 / 93 = 0.452. Both the carbon-sulfur ratio and the sulfur-chlorine ratio of the third group are within the range of typical characteristic values ​​of mustard gas. Furthermore, the characteristic elements of the gas tested in the third group are only carbon, sulfur, and chlorine. Therefore, the gas tested in the third group can be identified as mustard gas.

[0063] The present invention discloses a toxic gas detection and analysis method based on flame photometry. By using flame photometry, the type and content of characteristic elements in the gas to be tested can be accurately determined. By comparing the calculated characteristic value set with the set typical characteristic value set, the gas to be tested can be quickly and accurately identified and its category determined.

[0064] The technical solutions and technical details disclosed in the embodiments of this application are merely illustrative of the inventive concept of this application and do not constitute a limitation on the technical solutions of this application. Any conventional changes, substitutions or combinations made to the technical details disclosed in this application have the same inventive concept as this application and are within the protection scope of the claims of this application.

Claims

1. A method for detecting and analyzing toxic gases based on flame photometry, characterized in that, include: Based on the molecular formula of the poison gas, determine the types and quantities of atoms that make up each poison gas. The characteristic elements of each poison gas are determined, and then the typical characteristic values ​​of each poison gas are determined; each poison gas uniquely corresponds to a set of typical characteristic values; the set of typical characteristic values ​​is calculated from the types and quantities of atoms corresponding to the characteristic elements; the set of typical characteristic values ​​is represented as [x1, x2, ..., x...]. k , ..., x T ]; where x k Let be the k-th typical eigenvalue, T be the number of eigenvalues, and be a natural number greater than 0; Among them, the typical eigenvalue x k The mass ratio x of different characteristic elements i-j ,Right now: x k =x i-j ; Where, x i-j Calculate using the following formula: Where i and j represent the feature elements i and j; n i n is the number of atoms of characteristic element i. j M represents the number of atoms of characteristic element j. i M represents the relative atomic mass of characteristic element i. j x is the relative atomic mass of characteristic element j. i-j The mass ratio of feature element i to feature element j; The composition and content of the gas to be tested are measured by flame photometry, and the characteristic values ​​of the gas to be tested are calculated to obtain the set of characteristic values ​​of the gas to be tested. The obtained set of measured characteristic values ​​was compared with the known set of typical characteristic values; If the measured characteristic value set corresponds completely to a certain typical characteristic value set, then the gas to be tested can be determined to be the toxic gas corresponding to that typical characteristic value set.

2. The method for detecting and analyzing toxic gases based on flame photometry according to claim 1, characterized in that, The types of poisonous gases include sarin, soman, VEX, Lewisite, mustard gas, cyanogen chloride, and hydrogen cyanide.

3. The method for detecting and analyzing toxic gases based on flame photometry according to claim 2, characterized in that, The characteristic elements of the sarin are carbon, phosphorus, and fluorine. The typical characteristic value set of the sarin includes the carbon-to-phosphorus mass ratio and the phosphorus-to-fluorine mass ratio, expressed as [x...]. C-P x P-F ], where x C-P The range is 1.396 to 2.327, x P-F The values ​​range from 1.467 to 1.

793.

4. The method for detecting and analyzing toxic gases based on flame photometry according to claim 2, characterized in that, The characteristic elements of the soman are carbon, phosphorus, and fluorine. The typical characteristic value set of the soman includes the carbon-to-phosphorus mass ratio and the phosphorus-to-fluorine mass ratio, expressed as [x...]. C-P x P-F ], where x C-P The range is 2.443 to 4.072, x P-F The values ​​range from 1.467 to 1.

793.

5. The method for detecting and analyzing toxic gases based on flame photometry according to claim 2, characterized in that, The characteristic elements of the Viex are carbon, sulfur, and phosphorus. The typical characteristic value set of the Viex includes the carbon-sulfur mass ratio and the sulfur-phosphorus mass ratio, expressed as [x...]. C-S x S-P ], where x C-S The range is 3.708 to 6.180, x S-P The range is 0.932 to 1.

139.

6. The method for detecting and analyzing toxic gases based on flame photometry according to claim 2, characterized in that, The characteristic elements of the Lewis agent are carbon, arsenic, and chlorine. The typical characteristic value set of the Lewis agent includes the carbon-arsenic mass ratio and the arsenic-chlorine mass ratio, expressed as [x...]. C-As x As-Cl ], where x C-As The values ​​are 0.289–0.481, 0.577–0.962, or 0.866–1.443, x As-Cl The value ranges from 0.634 to 0.

775.

7. The method for detecting and analyzing toxic gases based on flame photometry according to claim 2, characterized in that, The characteristic elements of mustard gas are carbon, sulfur, and chlorine. The typical characteristic value set of mustard gas includes the carbon-sulfur mass ratio and the sulfur-chlorine mass ratio, expressed as [x...]. C-S x S-Cl ], where x C-S The range is 1.348 to 2.247, x S-Cl The value ranges from 0.407 to 0.

497.

8. The method for detecting and analyzing toxic gases based on flame photometry according to claim 2, characterized in that, The characteristic elements of the cyanogen chloride are carbon, nitrogen, and chlorine. The typical characteristic value set of the cyanogen chloride includes the carbon-nitrogen mass ratio and the chlorine-carbon mass ratio, expressed as [x...]. C-N x Cl-C ], where x C-N The range is 0.772 to 1.286, x Cl-C The values ​​range from 1.476 to 3.

247.

9. The method for detecting and analyzing toxic gases based on flame photometry according to claim 2, characterized in that, The characteristic elements of the hydrogen cyanide are carbon and nitrogen, and the typical characteristic value set of the hydrogen cyanide includes the carbon-nitrogen mass ratio, expressed as [x C-N ], where x C-N The range is 0.772 to 1.286.

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