CN102565030B - ICP spectral analysis system and method - Google Patents
ICP spectral analysis system and method Download PDFInfo
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- CN102565030B CN102565030B CN201110461598.0A CN201110461598A CN102565030B CN 102565030 B CN102565030 B CN 102565030B CN 201110461598 A CN201110461598 A CN 201110461598A CN 102565030 B CN102565030 B CN 102565030B
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Abstract
The invention provides an ICP spectral analysis system, which includes a torch pipe and a light chamber, and the torch pipe is arranged in a torch chamber; and the ICP spectral analysis system further includes a pressure or time measuring unit, an air intake valve, an air source, an air exhaust valve, judging staff equipment and controlling staff equipment, wherein the output end of the pressure or time measuring unit is connected with the judging staff equipment, and the pressure or time measuring unit is arranged in the light chamber; the air intake valve is arranged at the air inlet of the light chamber, and the input end thereof is connected with the controlling staff equipment; the air source is communicated with the light chamber through the air intake valve; the air exhaust valve is arranged at the exhaust port of the light chamber, and the input end thereof is connected with the controlling staff equipment; the judging staff equipment is used for judging whether the blowing gas in the light chamber satisfies the requirements of the measurement according to the signals transmitted by the pressure or time measuring unit, and the judgment result is transmitted to the controlling staff equipment; and the controlling staff equipment is used for controlling the opening/closing of the air intake valve and the air exhaust valve according to the received judgment result. The invention has the advantages that the ICP spectral analysis system is highly intelligent and has low operation cost.
Description
Technical field
The present invention relates to the measurement of displacement, particularly ICP spectroscopic analysis system and method for sensing.
Background technology
When ICP spectroscopic analysis system uses, in order to make analytic system can reach the requirement of normal work, need to open sweep gas (being generally argon gas) light chamber and gas circuit are purged, thus the indoor original gas of displacement light, purge time is short tens of minutes, long several hours.Because each start all will purge, so large especially to the consumption of gas, this is to no small expense of user Lai Shuoshi.
Existing solution is to allow the own manual operation of user control purge time, judges with user's oneself experience whether purge time reaches the normal job requirement of system, reaches shut-down purge after requirement.Another kind method is uninterruptedly to purge, and purge gas consumption is larger.These methods or complex operation, or waste very much argon gas, can do nothing to help user and accurately control purging.
Summary of the invention
In order to solve the deficiency in above-mentioned prior art scheme, the invention provides a kind of intellectuality, ICP spectroscopic analysis system and method that operating cost is low.
The object of the invention is to be achieved through the following technical solutions:
ICP spectroscopic analysis system, described analytic system comprises torch pipe, light chamber, it is indoor that described torch pipe is arranged on torch; Described analytic system further comprises:
Pressure or time measuring unit, output terminal connection judgment personnel equipment, it is indoor that described pressure measurement cell is arranged on described light;
Air intake valve, described air intake valve is arranged on the air intake opening of light chamber, and input end connects control personnel equipment; Source of the gas is communicated with described smooth chamber by described air intake valve;
Drain tap, described drain tap is arranged on the exhausr port of described smooth chamber, and input end connects control personnel equipment;
Judgement personnel equipment, the described personnel's of judgement equipment judges for the signal sending according to pressure or time measuring unit whether the indoor purge gas of described light meets the requirement of measuring, and judged result sends control personnel equipment;
Control personnel equipment, described control personnel equipment for control according to the described judged result that receives described air intake valve, drain tap unlatching, close.
According to above-mentioned analytic system, alternatively, described analytic system further comprises:
Gas outlet, one end of described gas outlet connects described torch chamber, and the other end connects described exhausr port.
Object of the present invention is also achieved by the following technical programs:
ICP spectroscopic analysis methods, described analytical approach comprises the following steps:
(A1) activated plasma light source, it is indoor that the measurement light that this light source sends enters light, passes after the indoor purge gas of light, is detected device and receives, be converted to electric signal, and be sent to judgement personnel equipment;
Described smooth chamber sealed with extraneous maintenance;
(A2) judge that personnel's equipment knows the attenuation degree of light indoor gas to described measurement light according to the described electric signal that receives, thereby judge whether the indoor purge gas of described light meets the requirement of measuring:
If the determination result is YES, enter next step;
If judged result is no, to the indoor purge gas that is filled with of described light, until meet the requirement of measuring, enter next step;
(A3) determinand is become plasma by described light source activation, and the light sending enters light chamber, after being received, is converted to electric signal by described detector, and analytic unit utilizes spectral technique to process this electric signal, thereby knows content information in determinand.
According to above-mentioned analytical approach, alternatively, described analytical approach is further comprising the steps:
(B1) record the indoor pressure of light or determinand measurement end last time time up till now, and be sent to judgement personnel equipment;
(B2) judge personnel's equipment judges according to the pressure receiving or time whether the indoor residual purge gas of light meets measurement and require:
If the determination result is YES, enter step (A1);
If judged result is no, to the indoor purge gas that is filled with of described light, until meet the requirement of measuring, enter step (A1).
According to above-mentioned analytical approach, alternatively, described analytical approach is further comprising the steps:
(C1) record the indoor pressure of light, and be sent to judgement personnel equipment;
(C2) judge personnel's equipment judges according to the pressure receiving whether the indoor residual purge gas of light meets measurement and require:
If the determination result is YES, proceed to analyze;
If judged result is no, to the indoor purge gas that is filled with of described light, until meet the requirement of measuring.
According to above-mentioned analytical approach, preferably, in described step (A2), the method judging is:
Judgement personnel equipment obtains the line strength corresponding to light indoor gas content according to the electric signal receiving, and judges according to described line strength whether light indoor gas meets the requirement of measuring, and described smooth indoor gas comprises purge gas.
According to above-mentioned analytical approach, alternatively, described smooth indoor gas also comprises the ambient atmos that enters described smooth chamber.
According to above-mentioned analytical approach, alternatively, in the time being filled with purge gas to described light is indoor, the gas of discharging in described smooth chamber enters torch chamber, for purging plasma tail flame or being torch pipe air feed.
Compared with prior art, the beneficial effect that the present invention has is:
1, the robotization real-time intelligent purging of realizing ICP spectrometer, greatly facilitates user;
2, significantly reduced ICP spectrometer sweep gas consumption in the course of the work, for user saves a large amount of expenses.
Brief description of the drawings
With reference to accompanying drawing, disclosure of the present invention will be easier to understand.Those skilled in the art hold intelligible: these accompanying drawings are only for illustrating technical scheme of the present invention, and are not intended to protection scope of the present invention to be construed as limiting.In figure:
Fig. 1 is according to the basic block diagram of the analytic system of the embodiment of the present invention 1;
Fig. 2 is according to the process flow diagram of the analytical approach of the embodiment of the present invention 1.
Embodiment
Fig. 1,2 and following declarative description optional embodiment of the present invention how to implement and to reproduce the present invention with instruction those skilled in the art.In order to instruct technical solution of the present invention, simplify or omitted some conventional aspects.Those skilled in the art should understand that be derived from these embodiments modification or replace will be within the scope of the invention.Those skilled in the art should understand that following characteristics can combine to form multiple modification of the present invention in every way.Thus, the present invention is not limited to following optional embodiment, and is only limited by claim and their equivalent.
Embodiment 1:
Fig. 2 has schematically provided the basic block diagram of the ICP spectroscopic analysis system of the embodiment of the present invention.As shown in Figure 2, described analytic system comprises:
Torch pipe, it is indoor that described torch pipe is arranged on torch.Described torch pipe and torch chamber are the state of the art, do not repeat them here.
Light chamber, indoor spectrometer and the analytic unit of arranging of described light.Described smooth chamber and internal part are the state of the art, do not repeat them here.
Confession sampling device, state of the art when described confession sampling device, does not repeat them here.
Pressure or time measuring unit, output terminal connection judgment personnel equipment, described pressure measurement cell as pressure transducer be arranged on as described in light indoor; Described time measuring unit measures the mistiming of this time measuring for measuring the last time.
Air intake valve, described air intake valve is arranged on the air intake opening of light chamber, and input end connects control personnel equipment; Source of the gas is communicated with described smooth chamber by described air intake valve; Described air intake valve can adopt solenoid valve or other valve.
Drain tap, described drain tap is arranged on the exhausr port of described smooth chamber, and input end connects control personnel equipment; Described drain tap can adopt solenoid valve or other valve.
Judgement personnel equipment, the described personnel's of judgement equipment judges for the signal sending according to pressure or time measuring unit whether the indoor purge gas of described light meets the requirement of measuring, and judged result is sent to control personnel equipment;
Control personnel equipment, described control personnel equipment for control according to the described judged result that receives described air intake valve, drain tap unlatching, close.
Alternatively, described analytic system further comprises gas outlet, and one end of described gas outlet connects described torch chamber, and the other end connects described exhausr port, for the flame envelope to described torch pipe supply gas or purging plasma.
Fig. 2 has schematically provided the process flow diagram of the ICP spectroscopic analysis methods of the embodiment of the present invention.As shown in Figure 2, described analytical approach comprises the following steps:
(A1) activated plasma light source, it is indoor that the measurement light that this light source sends enters light, passes after the indoor purge gas of light, is detected device and receives, be converted to electric signal, and be sent to judgement personnel equipment;
Described smooth chamber sealed with extraneous maintenance;
(A2) judge personnel's equipment according to the described electric signal that receives know light indoor gas (as purge gas or the extraneous gas that enters light chamber) to as described in the attenuation degree of measurement light, the content of gas according to the known described attenuation degree correspondence of spectral technique, can also compare and measure the attenuation degree of light at the different spectral lines place of gas, the ratio correspondence of this attenuation degree the content of gas, thereby judges whether the indoor purge gas of described light meets the requirement of measuring:
If the determination result is YES, enter next step;
If judged result is no, to the indoor purge gas that is filled with of described light, until meet the requirement of measuring, successively close drain tap and air intake valve, enter next step;
(A3) determinand is become plasma by described light source activation, and the light sending enters light chamber, after being received, is converted to electric signal by described detector, and analytic unit utilizes spectral technique to process this electric signal, thereby knows content information in determinand.
Alternatively, described analytical approach is further comprising the steps:
(B1) record the indoor pressure of light or determinand measurement end last time time up till now, and be sent to judgement personnel equipment;
(B2) judge that personnel's equipment judges according to the pressure that receives or time whether the indoor residual purge gas of light meets to measure and requires: upper once analyze finish after, described light is indoor be malleation and be sealing, and the degree correspondence that light indoor gas leaks pressure or time, therefore can go to judge whether the indoor purge gas of light still meets the requirement of measuring by pressure or time.
If the determination result is YES, enter step (A1);
If judged result is no, to the indoor purge gas that is filled with of described light, until meet the requirement of measuring, successively close drain tap and air intake valve, enter step (A1).
Alternatively, described analytical approach is further comprising the steps:
(C1) record the indoor pressure of light, and be sent to judgement personnel equipment;
(C2) judge personnel's equipment judges according to the pressure receiving whether the indoor purge gas of light meets measurement and require:
If the determination result is YES, proceed to analyze;
If judged result is no, to the indoor purge gas that is filled with of described light, until meet the requirement of measuring, successively close drain tap and air intake valve.
Alternatively, in the time being filled with purge gas to described light is indoor, it is indoor that the gas of discharging from described smooth chamber enters torch, for purging plasma tail flame or being torch pipe air feed.
The benefit reaching according to the embodiment of the present invention 1 is: can whether meet the requirement of measuring by the indoor purge gas of real-time judge light, and determine to pass into as the case may be the size of amount of purge gas, instead of blindly to the indoor purge gas that passes into the set time of light, save a large amount of purge gas, reduced the operating cost of system.It is indoor that the gas displacing of discharging from light chamber can also pass into torch, for purging wake flame or for torch pipe air feed, further having saved purge gas.
Embodiment 2:
The application examples in element detection in liquid according to the ICP spectroscopic analysis system of the embodiment of the present invention 1 and method.In this application examples, utilize high-purity argon gas as purge gas, in air intake opening and the gas outlet of light chamber, solenoid valve is installed, judge that personnel's equipment and the personnel of control equipment adopt software to realize, at the indoor pressure transducer that arranges of described light, output terminal connection judgment personnel equipment.
The course of work of above-mentioned analytic system is:
(B1) pressure transducer records the indoor pressure of light, and is sent to judgement personnel equipment;
(B2) judge personnel's equipment judges according to the pressure receiving whether the indoor residual argon gas of light meets measurement and require: the degree that the threshold value of pressure reaches according to purge gas needs is determined;
If the determination result is YES, enter step (A1);
If judged result is no, open air intake valve and drain tap, to the indoor high-purity argon gas that is filled with of described light, until meet the requirement of measuring: pressure is not less than threshold value, successively closes drain tap and air intake valve, enters step (A1).
(A1) activated plasma light source, it is indoor that the measurement light that this light source sends enters light, passes after the indoor gas of light, is detected device and receives, be converted to electric signal, and be sent to judgement personnel equipment;
Described smooth chamber sealed with extraneous maintenance;
(A2) judge that personnel's equipment knows the attenuation degree of the indoor argon gas of light to described measurement light according to the described electric signal that receives, thereby judge whether the indoor argon gas of described light meets the requirement of measuring: the degree that the threshold value of attenuation degree reaches according to argon gas needs is determined: argon content requires higher, and corresponding attenuation degree is higher;
If the determination result is YES, enter next step;
If judged result is no, open air intake valve and drain tap, (be incorporated into torch from the gas of light chamber discharge indoor to the indoor high-purity argon gas that is filled with of described light, be used for purging plasma flame envelope or for torch pipe air feed), until meet the requirement of measuring: attenuation degree is less than threshold value, successively close drain tap and air intake valve, enter next step;
(A3) determinand is become plasma by described light source activation, and the light sending enters light chamber, after being received, is converted to electric signal by described detector, and analytic unit utilizes spectral technique to process this electric signal, thereby knows content information in determinand;
In analytic process, also need:
(C1) record the indoor pressure of light, and be sent to judgement personnel equipment;
(C2) judge personnel's equipment judges according to the pressure receiving whether the indoor argon gas of light meets measurement and require:
If the determination result is YES, proceed to analyze;
If judged result is no, open air intake valve and drain tap, to the indoor high-purity argon gas that is filled with of described light, until meet the requirement of measuring: pressure is not less than threshold value, successively closes drain tap and air intake valve.
Embodiment 3:
The application examples in element detection in liquid according to the ICP spectroscopic analysis system of the embodiment of the present invention 1 and method.In this application examples, utilize high pure nitrogen as purge gas, in air intake opening and the gas outlet of light chamber, solenoid valve is installed, judge that personnel's equipment and the personnel of control equipment adopt circuit to realize, at the indoor pressure transducer that arranges of described light, output terminal connection judgment personnel equipment.Clock is also set, output terminal connection judgment personnel equipment.
The course of work of above-mentioned analytic system is:
(B1) clock records the last time and analyzes the mistiming of this analysis, and is sent to judgement personnel equipment;
(B2) judge personnel's equipment judges according to the mistiming receiving whether the indoor residual nitrogen of light meets measurement and require: the leakiness of the degree that the threshold value of mistiming reaches according to nitrogen needs and light chamber is determined: nitrogen content requires higher, and the mistiming is shorter; Leakiness is higher, and the mistiming is shorter;
If the determination result is YES, enter step (A1);
If judged result is no, open air intake valve and drain tap, to the indoor high pure nitrogen that is filled with of described light, until meet the requirement of measuring: the indoor pressure of light is not less than threshold value, successively closes drain tap and air intake valve, enters step (A1).
(A1) activated plasma light source, it is indoor that the measurement light that this light source sends enters light, passes after the indoor gas of light, is detected device and receives, be converted to electric signal, and be sent to judgement personnel equipment;
Described smooth chamber sealed with extraneous maintenance;
(A2) judge that personnel's equipment knows the attenuation degree of the indoor nitrogen of light to described measurement light according to the described electric signal that receives, compare the attenuation degree at the different spectral lines place of nitrogen, whether the nitrogen indoor according to light described in ratio in judgement meets the requirement of measuring: the degree that the threshold value of the ratio of attenuation degree reaches according to nitrogen needs is determined;
If the determination result is YES, enter next step;
If judged result is no, open air intake valve and drain tap, (be incorporated into torch from the gas of light chamber discharge indoor to the indoor high pure nitrogen that is filled with of described light, be used for purging plasma flame envelope or for torch pipe air feed), until meet the required value of measuring, successively close drain tap and air intake valve, enter next step;
(A3) determinand is become plasma by described light source activation, and the light sending enters light chamber, after being received, is converted to electric signal by described detector, and analytic unit utilizes spectral technique to process this electric signal, thereby knows content information in determinand;
In analytic process, also need:
(C1) record the indoor pressure of light, and be sent to judgement personnel equipment;
(C2) judge personnel's equipment judges according to the pressure receiving whether the indoor nitrogen of light meets measurement and require:
If the determination result is YES, proceed to analyze;
If judged result is no, open air intake valve and drain tap, to the indoor high pure nitrogen that is filled with of described light, until meet the requirement of measuring: light room pressure is not less than threshold value, successively closes drain tap and air intake valve.
In above-described embodiment 2,3, exemplarily provide the situation that judges that personnel's equipment and the personnel of control equipment adopt respectively software, circuit to realize, certainly can also be manually to realize, principle and above-described embodiment the 2, the 3rd, have in essence identical, this be for a person skilled in the art hold intelligible.
Claims (8)
1.ICP spectroscopic analysis system, described analytic system comprises torch pipe, light chamber, it is indoor that described torch pipe is arranged on torch; It is characterized in that, described smooth chamber sealed with extraneous maintenance; Described analytic system further comprises:
Pressure or time measuring unit, record the indoor pressure of light or determinand measurement last time finishes the time up till now, output terminal connection judgment personnel equipment, and it is indoor that described pressure measurement cell is arranged on described light;
Air intake valve, described air intake valve is arranged on the air intake opening of light chamber, and input end connects control personnel equipment; Source of the gas is communicated with described smooth chamber by described air intake valve;
Drain tap, described drain tap is arranged on the exhausr port of described smooth chamber, and input end connects control personnel equipment;
Judgement personnel equipment, the described personnel's of judgement equipment judges for the signal sending according to pressure or time measuring unit whether the indoor purge gas of described light meets the requirement of measuring, and judged result sends control personnel equipment;
Control personnel equipment, described control personnel equipment for control according to the described judged result that receives described air intake valve, drain tap unlatching, close.
2. analytic system according to claim 1, is characterized in that: described analytic system further comprises:
Gas outlet, one end of described gas outlet connects described torch chamber, and the other end connects described exhausr port.
3.ICP spectroscopic analysis methods, described analytical approach comprises the following steps:
(A1) activated plasma light source, it is indoor that the measurement light that this light source sends enters light, passes after the indoor purge gas of light, is detected device and receives, be converted to electric signal, and be sent to judgement personnel equipment;
Described smooth chamber sealed with extraneous maintenance;
(A2) judge that personnel's equipment knows the attenuation degree of light indoor gas to described measurement light according to the described electric signal that receives, thereby judge whether the indoor purge gas of described light meets the requirement of measuring:
If the determination result is YES, enter next step;
If judged result is no, to the indoor purge gas that is filled with of described light, until meet the requirement of measuring, successively close drain tap and air intake valve, enter next step;
Described air intake valve is arranged on the air intake opening of light chamber, and input end connects control personnel equipment; Source of the gas is communicated with described smooth chamber by described air intake valve; Described drain tap is arranged on the exhausr port of described smooth chamber, and input end connects control personnel equipment; Described control personnel equipment for control according to the described judged result that receives described air intake valve, drain tap unlatching, close;
(A3) determinand is become plasma by described light source activation, and the light sending enters light chamber, after being received, is converted to electric signal by described detector, and analytic unit utilizes spectral technique to process this electric signal, thereby knows content information in determinand.
4. analytical approach according to claim 3, is characterized in that: described analytical approach is further comprising the steps:
(B1) record the indoor pressure of light or determinand measurement end last time time up till now, and be sent to judgement personnel equipment;
(B2) judge personnel's equipment judges according to the pressure receiving or time whether the indoor residual purge gas of light meets measurement and require:
If the determination result is YES, enter step (A1);
If judged result is no, to the indoor purge gas that is filled with of described light, until meet the requirement of measuring, enter step (A1).
5. analytical approach according to claim 3, is characterized in that: described analytical approach is further comprising the steps afterwards in step (A3):
(C1) record the indoor pressure of light, and be sent to judgement personnel equipment;
(C2) judge personnel's equipment judges according to the pressure receiving whether the indoor purge gas of light meets measurement and require:
If the determination result is YES, proceed to analyze;
If judged result is no, to the indoor purge gas that is filled with of described light, until meet the requirement of measuring.
6. analytical approach according to claim 3, is characterized in that: in described step (A2), the method judging is:
Judgement personnel equipment obtains the decay intensity corresponding to light indoor gas content according to the electric signal receiving, judge according to the ratio of described decay intensity or decay intensity whether light indoor gas meets the requirement of measuring, and described smooth indoor gas comprises purge gas.
7. analytical approach according to claim 6, is characterized in that: described smooth indoor gas also comprises the ambient atmos that enters described smooth chamber.
8. analytical approach according to claim 3, is characterized in that: in the time being filled with purge gas to described light is indoor, the gas of discharging in described smooth chamber enters torch chamber, for purging plasma tail flame or being torch pipe air feed.
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| CN104363689B (en) * | 2014-11-18 | 2017-02-08 | 聚光科技(杭州)股份有限公司 | Analysis power source and mineral powder analysis device and method |
| CN112578728B (en) * | 2020-12-15 | 2021-12-07 | 中国环境科学研究院 | Switching device and method for switching gas of ICP spectrometer |
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| JP4779807B2 (en) * | 2006-05-29 | 2011-09-28 | 株式会社島津製作所 | ICP emission spectrometer |
| JP4692396B2 (en) * | 2006-06-01 | 2011-06-01 | 株式会社島津製作所 | ICP analyzer |
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| CN201000434Y (en) * | 2007-01-12 | 2008-01-02 | 北京瑞利分析仪器公司 | Ultra trace mercury measuring apparatus in water sample for atomic fluorescence optical spectrometer |
| CN202421072U (en) * | 2011-12-31 | 2012-09-05 | 聚光科技(杭州)股份有限公司 | ICP (Inductively Coupled Plasma) spectrum analysis system |
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