CN114324307A - Analysis method based on inductively coupled plasma technology - Google Patents
Analysis method based on inductively coupled plasma technology Download PDFInfo
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- CN114324307A CN114324307A CN202111557687.5A CN202111557687A CN114324307A CN 114324307 A CN114324307 A CN 114324307A CN 202111557687 A CN202111557687 A CN 202111557687A CN 114324307 A CN114324307 A CN 114324307A
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- electric signal
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- 238000004458 analytical method Methods 0.000 title claims abstract description 16
- 238000009616 inductively coupled plasma Methods 0.000 title claims abstract description 14
- 230000003595 spectral effect Effects 0.000 claims abstract description 30
- 239000000463 material Substances 0.000 claims abstract description 7
- 238000006243 chemical reaction Methods 0.000 claims description 5
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 2
- 229910052791 calcium Inorganic materials 0.000 claims description 2
- 239000011575 calcium Substances 0.000 claims description 2
- 229910052749 magnesium Inorganic materials 0.000 claims description 2
- 239000011777 magnesium Substances 0.000 claims description 2
- 229910052710 silicon Inorganic materials 0.000 claims description 2
- 239000010703 silicon Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000112 cooling gas Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The invention provides an analysis method based on an inductively coupled plasma technology, which comprises the following steps: (A1) selecting characteristic spectral lines of main body elements and characteristic spectral lines of secondary elements in materials used by the torch tube, and respectively establishing electric signal thresholds corresponding to the characteristic spectral lines; (A2) igniting the torch tube, and outputting the light intensity of the characteristic spectral line of the main element and the light intensity of the characteristic spectral line of the secondary element by a detector; (A3) converting the light intensity of each characteristic spectral line into the intensity of an electric signal; (A4) comparing the electrical signal strength to an electrical signal threshold; if the intensity of each electric signal exceeds the corresponding electric signal threshold value, a flameout instruction is sent out; (A5) and the controller closes the torch pipe according to the flameout instruction. The invention has the advantages of accurate identification, good protection effect and the like.
Description
Technical Field
The invention relates to element analysis, in particular to an analysis method based on an inductively coupled plasma technology.
Background
In the conventional ICP spectrometer, the torch tube is burned out due to problems such as rusting of the coil or distortion of the coil, or small flow rates of the cooling gas and the auxiliary gas.
At present, a method for detecting Si element is used, because the material of the tube is mostly provided with a large amount of Si element, before the torch tube is burnt out, the Si element in the torch tube can be ionized due to high temperature, at the moment, the content of the Si element is detected, when the Si element is larger than a certain value, an instrument cancels an ignition state to protect the torch tube in the process experiment, because the Si element is used as a single detection point, the Si element cannot be completely accurate, and the Si element cannot be completely avoided when the torch tube is burnt out too fast.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides an analysis method based on an inductively coupled plasma technology.
The purpose of the invention is realized by the following technical scheme:
the analysis method based on the inductively coupled plasma technology comprises the following steps:
(A1) selecting characteristic spectral lines of main body elements and characteristic spectral lines of secondary elements in materials used by the torch tube, and respectively establishing electric signal thresholds corresponding to the characteristic spectral lines;
(A2) igniting the torch tube, and outputting the light intensity of the characteristic spectral line of the main element and the light intensity of the characteristic spectral line of the secondary element by a detector;
(A3) converting the light intensity of each characteristic spectral line into the intensity of an electric signal;
(A4) comparing the electrical signal strength to an electrical signal threshold;
if the intensity of each electric signal exceeds the corresponding electric signal threshold value, a flameout instruction is sent out;
(A5) and the controller closes the torch pipe according to the flameout instruction.
Compared with the prior art, the invention has the beneficial effects that:
1. the identification is accurate;
identifying whether the torch tube has a tendency of being burnt by utilizing the detection areas of the main elements and the secondary elements in the torch tube material, and developing corresponding measures according to an identification result: flameout or continue to add power until ignition is successful;
the ignition power is continuously improved, and the content of elements is monitored in real time, so that the identification accuracy is further improved;
2. the protection effect is good;
when the torch tube is in the tendency of being burnt, the torch tube is extinguished, and the torch tube is effectively protected.
Drawings
The disclosure of the present invention will become more readily understood with reference to the accompanying drawings. As is readily understood by those skilled in the art: these drawings are only for illustrating the technical solutions of the present invention and are not intended to limit the scope of the present invention. In the figure:
fig. 1 is a flow chart of an analysis method based on an inductively coupled plasma technique according to an embodiment of the present invention.
Detailed Description
Fig. 1 and the following description depict alternative embodiments of the invention to teach those skilled in the art how to make and reproduce the invention. Some conventional aspects have been simplified or omitted for the purpose of explaining the technical solution of the present invention. Those skilled in the art will appreciate that variations or substitutions from these embodiments will be within the scope of the invention. Those skilled in the art will appreciate that the features described below can be combined in various ways to form multiple variations of the invention. Thus, the present invention is not limited to the following alternative embodiments, but is only limited by the claims and their equivalents.
Example 1:
fig. 1 is a schematic flow chart of an analysis method based on an inductively coupled plasma technology according to an embodiment of the present invention, and as shown in fig. 1, the analysis method based on the inductively coupled plasma technology includes the following steps:
(A1) selecting characteristic spectral lines of main body elements and characteristic spectral lines of secondary elements in materials used by the torch tube, and respectively establishing electric signal thresholds corresponding to the characteristic spectral lines;
(A2) igniting the torch tube, and outputting the light intensity of the characteristic spectral line of the main element and the light intensity of the characteristic spectral line of the secondary element by a detector;
(A3) converting the light intensity of each characteristic spectral line into the intensity of an electric signal;
(A4) comparing the electrical signal strength to an electrical signal threshold;
if the intensity of each electric signal exceeds the corresponding electric signal threshold value, a flameout instruction is sent out;
(A5) and the controller closes the torch pipe according to the flameout instruction.
In order to detect the torch tube in real time, further, in step (a4), if at least one of the intensities of the electric signals does not exceed the corresponding electric signal threshold, the operating power of the torch tube is increased, and step (a2) is proceeded.
In order to accurately compare the light intensity with the threshold value, further, in step (a3), the manner of conversion is:
i ═ α · a, I is the electrical signal intensity, α is the conversion efficiency, and a is the light intensity.
Example 2:
the inductively coupled plasma technology-based analysis method and the application example of the method according to embodiment 1 of the present invention.
In this application example, as shown in fig. 1, the analysis method based on the inductively coupled plasma technology includes the following steps:
(A1) selecting a characteristic spectral line of a main element silicon and characteristic spectral lines of secondary elements calcium and magnesium in materials used by the torch tube, and respectively establishing electric signal thresholds corresponding to the characteristic spectral lines;
(A2) the torch is ignited at 750W, and the detector outputs the light intensity of the characteristic spectral line of the main element and the light intensity of the characteristic spectral line of the secondary element;
(A3) the light intensity of each characteristic spectral line is converted into the electric signal intensity in the following mode:
i ═ α · a, I is the electrical signal intensity, α is the conversion efficiency, a is the light intensity;
(A4) comparing the electrical signal strength to an electrical signal threshold;
if the intensity of each electric signal exceeds the corresponding electric signal threshold value, sending a flameout instruction, and entering the step (A5);
if at least one of the electric signal intensities does not exceed the corresponding electric signal threshold, increasing the operating power of the torch tube, and entering the step (A2) until the power reaches 1150W, and finishing the ignition process;
(A5) and the controller closes the torch pipe according to the flameout instruction.
Claims (4)
1. The analysis method based on the inductively coupled plasma technology is characterized by comprising the following steps of:
(A1) selecting characteristic spectral lines of main body elements and characteristic spectral lines of secondary elements in materials used by the torch tube, and respectively establishing electric signal thresholds corresponding to the characteristic spectral lines;
(A2) igniting the torch tube, and outputting the light intensity of the characteristic spectral line of the main element and the light intensity of the characteristic spectral line of the secondary element by a detector;
(A3) converting the light intensity of each characteristic spectral line into the intensity of an electric signal;
(A4) comparing the electrical signal strength to an electrical signal threshold;
if the intensity of each electric signal exceeds the corresponding electric signal threshold value, a flameout instruction is sent out;
(A5) and the controller closes the torch pipe according to the flameout instruction.
2. The analytical method according to claim 1, wherein in step (A4), if at least one of the respective electrical signal strengths does not exceed the corresponding electrical signal threshold, the torch operating power is increased, and step (A2) is performed.
3. The analytical method according to claim 1, wherein in step (A3), the conversion is performed by:
i ═ α · a, I is the electrical signal intensity, α is the conversion efficiency, and a is the light intensity.
4. The inductively coupled plasma technology-based analysis method of claim 1, wherein the primary element is silicon and the secondary elements are calcium and magnesium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202111557687.5A CN114324307B (en) | 2021-12-20 | 2021-12-20 | Analysis method based on inductively coupled plasma technology |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111557687.5A CN114324307B (en) | 2021-12-20 | 2021-12-20 | Analysis method based on inductively coupled plasma technology |
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| CN114324307A true CN114324307A (en) | 2022-04-12 |
| CN114324307B CN114324307B (en) | 2024-02-13 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5332386A (en) * | 1992-07-01 | 1994-07-26 | Toyota Jidosha Kabushiki Kaisha | Combustion control method |
| JP2003232738A (en) * | 2002-02-06 | 2003-08-22 | Tdk Corp | Plasma torch for elemental analysis, analytical apparatus and method using the plasma torch, and protector for the plasma torch |
| CN201628687U (en) * | 2009-12-24 | 2010-11-10 | 江苏天瑞仪器股份有限公司 | Inductively-coupled plasma emission spectrometer |
| CN105067595A (en) * | 2015-07-24 | 2015-11-18 | 中国地质大学（武汉） | Adjustment method and adjustment apparatus of ICP ion source flame detection position |
| CN106198493A (en) * | 2015-05-27 | 2016-12-07 | 株式会社岛津制作所 | Inductively type plasma analyzer |
| CN108181374A (en) * | 2018-02-08 | 2018-06-19 | 聚光科技(杭州)股份有限公司 | The method of work of plasma-mass spectrometry system |
| JP2019175066A (en) * | 2018-03-28 | 2019-10-10 | Ｊｘｔｇエネルギー株式会社 | Monitoring device, monitoring system and monitoring method |
-
2021
- 2021-12-20 CN CN202111557687.5A patent/CN114324307B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5332386A (en) * | 1992-07-01 | 1994-07-26 | Toyota Jidosha Kabushiki Kaisha | Combustion control method |
| JP2003232738A (en) * | 2002-02-06 | 2003-08-22 | Tdk Corp | Plasma torch for elemental analysis, analytical apparatus and method using the plasma torch, and protector for the plasma torch |
| CN201628687U (en) * | 2009-12-24 | 2010-11-10 | 江苏天瑞仪器股份有限公司 | Inductively-coupled plasma emission spectrometer |
| CN106198493A (en) * | 2015-05-27 | 2016-12-07 | 株式会社岛津制作所 | Inductively type plasma analyzer |
| CN105067595A (en) * | 2015-07-24 | 2015-11-18 | 中国地质大学（武汉） | Adjustment method and adjustment apparatus of ICP ion source flame detection position |
| CN108181374A (en) * | 2018-02-08 | 2018-06-19 | 聚光科技(杭州)股份有限公司 | The method of work of plasma-mass spectrometry system |
| JP2019175066A (en) * | 2018-03-28 | 2019-10-10 | Ｊｘｔｇエネルギー株式会社 | Monitoring device, monitoring system and monitoring method |
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| CN114324307B (en) | 2024-02-13 |
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