CN109297957A - A kind of radioactivity inert gas radon self-test kit and its application method - Google Patents
A kind of radioactivity inert gas radon self-test kit and its application method Download PDFInfo
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- CN109297957A CN109297957A CN201811318708.6A CN201811318708A CN109297957A CN 109297957 A CN109297957 A CN 109297957A CN 201811318708 A CN201811318708 A CN 201811318708A CN 109297957 A CN109297957 A CN 109297957A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
- G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
- G01N21/78—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2202—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling
- G01N1/2214—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling by sorption
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2202—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling
- G01N1/2214—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling by sorption
- G01N2001/2217—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling by sorption using a liquid
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Abstract
The invention belongs to kit technical field, discloses a kind of radioactivity inert gas radon self-test kit and its application method, radioactivity inert gas radon self-test kit are provided with plastic shell；Composite fibre film, reagent trough are placed on the plastic shell；Plastic outer cover is stamped on the plastic shell.Reagent built in the radioactivity inert gas radon self-test kit；9.50nmol/L gold nano, 0.2% acetic acid, 50mmol/L sodium citrate-hydrochloride buffer system, 100mmol/L hydrogen peroxide, 5.0 × 10‑3mol/L TMB.The present invention can be achieved to detect the integrated radiation dose " one-step method " of radon, a radioactive gas, easy to operate, is not necessarily to large-scale instrument and equipment, observes by the naked eye kit color change and compare standard color comparison card, can half-quantitative detection radon accumulative dose of radiation.
Description
Technical field
The invention belongs to kit technical field more particularly to a kind of radioactivity inert gas radon self-test kit and its make
Use method.
Background technique
Currently, establishing on some physical methods to the measuring study of indoor radon concentration both at home and abroad, detection radon declines
Sell of one's property raw alpha ray, β ray, gamma-rays.Traditional method of radon measurement can be divided into three classes: one kind is instantaneous sample method, such as double filters
Embrane method, scintigraphy, balloon method and activated carbon adsorption analytic method；Two classes are accumulation sampling method, such as active carbon spectroscopy and solid diameter
Mark method；Three classes are continuous mode method, such as electrostatic collection type radon continuous monitor.China in 2010 carries out GB50325-2010
Revision provides that the civil building engineering indoor environmental pollution to newly-built, enlarging and reconstruction monitors in new standard.Electrostatic collection
Type radon continuous monitor price is more expensive, and must be operated by skilled practitioner, limits its use；Active carbon spectroscopy is surveyed
Radon has sensitivity and precision high, is easy to find the radon consistence of Weak Anomaly.But after reaching adsorption equilibrium, it can not inhale again
Attached remaining radon；Solid trace method is referred to as SSNTD method, is the most general indoor environment radon consistence detection side in the world recently
Method, this method is suitable for the acquisition of batch samples and centralized processing is read with survey, can be surveyed simultaneously with multiple spot.But detection cycle mistake
It is long, it needs manually to use measurement microscope solid phase track, track etching and repeatedly survey are read, and error is larger；Pulse ionization chamber method pair
Environmental requirement is relatively high, is not suitable for on-site measurement；Activated carbon adsorption analytic method has low in cost, and operation is succinct, repeats
The advantages that use, but be only applicable to measure in short term, and be affected by humidity and temperature；Double Filter can measure instantaneous sampling pair
Radon consistence, but party's subtraction unit is heavy, sampling head may cause gas leakage to frequent exchange for, influence measurement result；Scintillation vial
Method detection limit is generally lower, easy to operate, and accuracy is high, but time of measuring is too long, and equipment is more, and device is heavy, inconvenient
It uses on site；Balloon method only will change balloon into decay cylinder in Double Filter, reduce the production cost in this way, Er Qieyan
Radon has been grown to decay time, improves the accuracy of measurement result；Wireless sensing measuring method proposed a kind of solid phase core in recent years
The new method of track wireless sensing measurement radon.The method is to provide on the basis of solid phase nuclear track for quickly measurement nuclear track
It is convenient.With the development of science and technology, it is had been reported that when some new method of radon measurement, such as gas chromatography, electrochemical methods,
Monte carlo computer simulation mensuration etc..These new methods undeniable are more or less all there is some disadvantages
All possess new technical characterstic, certain improvement or raising have been carried out to the measurement method of radon.Gas chromatography need to configure the mark of radon
Quasi- gas also brings live Radon pollution air sample into laboratory, and in entire sampling, detection process, operator can be by
To the harm of radon.Monte carlo computer simulation mensuration does not need experimental determination, need to only input meteorologic parameter in advance, but supervise
Result inaccuracy is surveyed, and is unable to measure the build-up radiation harm of radon.Therefore, establishing one kind both can be to avoid the pollution and radiation of radon
Harm, and can be sensitive and accurate, the new method for measuring to simple economy radon is of great significance.With Nuclear Power Accident, depleted uranium bomb
Use, a possibility that uranium decay generates radon, radon radioactive pollution occurs, is increasing, and detection, prevention radon radioactivity are dirty
The task of dye is great, of far-reaching significance.Currently, leading to the spoke of Indoor Niton since people are using mineral material building, modification house
It penetrates intensity to significantly increase, airtight performance improves especially after house decoration, and air flow property is poor, causes indoor radon gas to be accumulated, radon
Concentration increases, and bigger radiation injury is caused to human body.It can be seen that people can suffer from daily Working Life
To the radiational injury of radon, Indoor Niton Pollution has become an important public health challenge, modern society's extensive concern Radon pollution
Prevention and evaluation, it is long, complicated for operation etc. obvious insufficient to there is expensive equipment, sampling time more in existing detection method, and builds
The self-test kit of vertical radon, a radioactive gas is exactly that the urgent need of numerous people determines, be adapt to social development needs must
So require.
In conclusion problem of the existing technology is: existing Indoor Niton Pollution detection method there are expensive equipment, adopt
The sample time is long, complicated for operation, operator is vulnerable to radiation pollution and harm.
Summary of the invention
In view of the problems of the existing technology, the present invention provides a kind of radioactivity inert gas radon self-test kit and its
Application method.
The present invention is the quantitative analysis of the stabilization daughter lead by generating to radon decay, indirectly tired to the radiation of Radon
Product dosage carries out semi-quantitative analysis.It is that 0.8 μm of filter membrane is covered on sampling ware mouth that aperture is selected on kit surface, interfering ion
Experiment and recovery testu show that cellulose mixture micropore mocromembrane can effectively prevent leaded aerosol contaminants in air and enter
Sampling container is that the radiation of gas radon enters after sampling container the daughter lead of generation of decaying with guarantee acquisition.In addition, absolutely mostly
In number situation, the aerodynamic diameter of other radioaerosols is greater than 1 μm, it is difficult to through 0.8 μm of filter membrane.It is small with fenestra
When 1 μm of filter membrane carries out radioaerosol sampling, sampling efficiency is equal to or slightly less than 100%, and decay daughter210Pb is
Radon is with the product of 1:1 radiative decay.Therefore, the Mimetic Peroxidase activity generated using lead ion and gold nano grain effect
It is catalyzed H2O2TMB colour developing is aoxidized, and then realizes and the semi-quantitative analysis of radon is detected.
The present invention using radon sample of inductivity coupled plasma mass spectrometry (ICP-MS) method to acquisition before use, carried out early period
Measurement, has detected the presence of daughter lead, and carried out quantitative analysis, for the present invention provides scientific basis.The present invention also makes
Real time contrast's measurement has been carried out with radon consistence of the measuring instrument the being widely used in the world-RAD7 emanometer to radon laboratory, this
A little data are the quantitative determination model that the present invention establishes between the cumulative concentration of radon and daughter lead, provide well science according to
According to.The concentration of daughter lead is at logarithmic relationship, fit equation c in the intergal dose and sample of radonPb=4.96ln (cRn+1.09)-
1.11 r=0.9965；Good linear relationship, equation of linear regression c is presented therebetween in a certain rangePb=
2.3cRn- 0.11, r=0.9964, the range of linearity are 2.0 × 102- 2.0 × 105Bq·h/m3。
A kind of radioactivity inert gas radon self-test kit, the radioactivity inert gas radon self-test kit are provided with
Plastic shell；
Composite fibre film, reagent trough are placed on the plastic shell；
Plastic outer cover is stamped on the plastic shell.
Further, reagent built in the radioactivity inert gas radon self-test kit；9.50nmol/L gold nano, 0.2%
Acetic acid, 50mmol/L sodium citrate-hydrochloric acid buffer solution, 100mmol/L hydrogen peroxide, 5.0 × 10-3Mol/LTMB solution.
Further, the standard colorimetric item of the radioactivity inert gas radon self-test kit are as follows:
0Bq·h/m3, colour developing result is that the mean concentration of radon, a radioactive gas is 0Bq/m3, as negative control；
500Bq·h/m3, colour developing result is that the mean concentration of radon, a radioactive gas is 50Bq/m3；
1000Bq·h/m3, colour developing result is that the mean concentration of radon, a radioactive gas is 100Bq/m3；
2000Bq·h/m3, colour developing result is that the mean concentration of radon, a radioactive gas is 200Bq/m3；
4000Bq·h/m3, colour developing result is that the mean concentration of radon, a radioactive gas is 400Bq/m3；
5000Bq·h/m3, colour developing result is that the mean concentration of radon, a radioactive gas is 500Bq/m3；
6000Bq·h/m3, colour developing result is that the mean concentration of radon, a radioactive gas is 600Bq/m3；
15000Bq·h/m3, colour developing result is that the mean concentration of radon, a radioactive gas is 1500Bq/m3。
Another object of the present invention is to attempt to provide a kind of use of radioactivity inert gas radon self-test kit
Method realizes quick, the easy semi-quantitative analysis to radon.The application method of the radioactivity inert gas radon self-test kit
It include: the radioactivity inert gas radon in indirect determination room air by the measurement of the final decay daughter lead to radioactive radon
Accumulative dose of radiation；After radon, a radioactive gas radiation enters 0.2% acetic acid,222Rn decay is daughter210Pb forms Pb2+, adjust
PH is saved to acid condition, in sodium citrate-hydrochloric acid buffer solution of pH 3.3, gold nano and lead ion act on forming AuNPs-
Pb compound is catalyzed H2O2TMB is aoxidized, solution colour becomes blue from colourless；Solution develop the color result and standard color block color into
Row compares, and finds out corresponding radon integrated radiation dose, is converted by calculation formula, estimates radon, a radioactive gas in room air
Mean concentration range.
The present invention can be achieved to detect the intergal dose " one-step method " of radon, a radioactive gas, easy to operate, without large-scale instrument
Device equipment observes by the naked eye kit color change and compares standard color comparison card, can half-quantitative detection radon accumulative radiation
Dosage, and the mean concentration of radon is calculated, relevant report is had no at present.
Kit of the invention is light small and exquisite, is packed using standardization, the specification of external packing box are as follows: and 10cm × 5cm ×
3cm has independent plastic outer cover to seal, and carries convenient transport.It is raw materials used simple, it is general chemical reagent, production cost
It is lower；Profit ratio of sales is 40%-60%；Product price is cheap, easy to use, is not necessarily to professional knowledge, meets general family
Detection needs, convenient for promoting in crowd.
Kit of the invention is easy to operate, time saving, and phenomenon is obvious, convenient for judgement, solve conventional method it is complicated, it is time-consuming,
Poor feasibility, the low problem of transparency detect condition of providing convenience for related quality supervision department scene immediately, will be by quality supervision portion
The welcome of door.Kit need to be only placed on after interior sampled, sample need not any processing, can directly want to specifications
It asks and is operated.Testing result can visually observe, and be not necessarily to large-scale instrument, may know that radon consistence is in institute's sample by colorimetric
No exceeded, suitable for buildings in general Indoor Niton gas detection.The equal no pollution to the environment of agents useful for same, meets national policy and wants
It asks.For the detection method of existing detection radon, a radioactive gas, principle obtains radon build-up radiation agent with chemical method
Amount, is converted into respective concentration, is compared by observation color change and standard color comparison card, can intuitively obtain more reliable Indoor Niton
Concentration semi-quantitative results.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of radioactivity inert gas radon self-test kit provided in an embodiment of the present invention；
In figure: 1. plastic outer covers；2. composite fibre film；3. reagent trough；4. plastic shell.
Fig. 2 is the schematic illustration of radioactivity inert gas radon self-test kit provided in an embodiment of the present invention.
Fig. 3 is the standard colorimetric bar schematic diagram of radioactivity inert gas radon self-test kit provided in an embodiment of the present invention.
Fig. 4 is Radon sampling process analysis diagram provided in an embodiment of the present invention.
Fig. 5 is the Mimetic Peroxidase provided in an embodiment of the present invention generated using lead ion and gold nano grain effect
Active catalytic H2O2TMB colour developing is aoxidized, and then realizes and figure is detected to the semi-quantitative analysis of radon.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
Limit the present invention.
The detection range of radioactivity inert gas radon self-test kit provided in an embodiment of the present invention can satisfy interior and put
The examination criteria of the accumulative dose of radiation of penetrating property gas radon, and it is easy to operate quick, as a result there is apparent color change, is easy to see
It examines, is suitable for promoting.The present invention is indirectly average to Radon dense by the quantitative analysis of the stabilization daughter lead generated to radon decay
Degree carries out quantitative analysis, realizes user's self-test；The harm that radon on ordinary meaning generates human body refers to the (ICRP-65 of radon -222
Number report), radon -222 is another long lived nuclides radium (T in uranium series1/2=1600a) decay generates, and half-life period is
3.825a generates a series of nucleic after decay, ultimately produce stable isotope lead -210 (210Pb)；Kit being capable of independent acquisition
Radon in environment simultaneously carries out visual method detection, which sets up negative control hole and Positive control wells simultaneously, guarantees test
As a result accurate and reliable.The filter membrane that each sampling hole surface selecting hole diameter is 0.8 μm is covered on sampling ware mouth, for preventing sky
Leaded aerosol contaminants enter sampling container in gas, and guarantee acquisition is that decay generates after the radiation of gas radon enters sampling container
Daughter lead；The Mimetic Peroxidase active catalytic H generated using lead ion and gold nano grain effect2O2It is aobvious to aoxidize TMB
Color, and then realize and the semi-quantitative analysis of radon is detected；The quantitative determination mould between the cumulative concentration of radon and daughter lead is established simultaneously
Type；The concentration of daughter lead is at logarithmic relationship, fit equation c in the intergal dose and sample of radonPb=4.96ln (cRn+1.09)-
1.11 r=0.9965；Good linear relationship, equation of linear regression c is presented therebetween in a certain rangePb=
2.3cRn- 0.11, r=0.9964, detection range is about 2.0 × 102- 2.0 × 105Bq·h/m3。
Pb in sample2+Testing result
Application principle of the invention is explained in detail with reference to the accompanying drawing.
As shown in Figure 1, radioactivity inert gas radon self-test kit provided in an embodiment of the present invention include: plastic outer cover 1,
Composite fibre film 2, reagent trough 3, plastic shell 4.
It is placed with composite fibre film 2, reagent trough 3 on plastic shell 4, is stamped plastic outer cover 1 on plastic shell 4.
Radioactivity inert gas radon self-test kit provided in an embodiment of the present invention is packed using standardization, external packing box
Specification are as follows: 10cm × 5cm × 3cm, built-in reagent, independent plastic shell split using unitizing and configure detection instrument, system
One product marking and project oneself it is special.
Plastic shell 4 uses igelite, foam, cellulose mixture film etc..
Content: 9.50nmol/L gold nano (D ≈ 13nm), 0.2% acetic acid, 50mmol/L sodium citrate-hydrochloride buffer
System, 100mmol/L hydrogen peroxide, 5.0 × 10-3Mol/LTMB etc..
As shown in Fig. 2, radioactivity inert gas radon self-test kit provided in an embodiment of the present invention passes through to radioactive radon
Final decay daughter lead measurement, the accumulative dose of radiation of radioactivity inert gas radon in indirect determination room air.Radiation
Property gas radon by 0.2% acetum absorb, make222Rn decay is daughter210Pb forms Pb2+, adjusting pH to acid condition,
In sodium citrate-hydrochloric acid buffer solution of pH 3.3, gold nano and lead ion act on forming AuNPs-Pb compound, this is compound
Object has the catalytic activity of Mimetic Peroxidase, can be catalyzed H2O2TMB is aoxidized, solution colour is caused to become blue from colourless.It will
Solution colour developing result is compared with the color of standard color block, finds out corresponding radon integrated radiation dose, and estimate Interior Space
The mean concentration range of radon, a radioactive gas in gas.The color change of the result of acquisition is compared with standard colorimetric block, it is right
According to the explanation of operation instructions, that is, it can determine whether the concentration range of indoor radon, a radioactive gas.
The product standard comparator block of radioactivity inert gas radon self-test kit provided in an embodiment of the present invention: according to country
Standard regulation the durations sampling such as carries out under the conditions of the radon consistence of certain gradient, carries out standard operation according to experimental principle after sampling,
Using ultraviolet-visual spectrometer measurement, absorbance value caused by measurement plumbum ion concentration changes and intercepts corresponding under certain wavelength
Colour developing result as standard colorimetric block.The concentration of daughter lead in a certain range two in the radiation intergal dose of radon and sample
Good linear relationship, equation of linear regression c are presented between personPb=2.3cRn- 0.11, r=0.9964, it is possible thereby to indirectly
Calculate the mean concentration of radon.Standard colorimetric item such as Fig. 3:
1:0Bqh/m3, colour developing result is that the mean concentration of radon, a radioactive gas is 0Bq/m3, as negative control.
2:500Bqh/m3, colour developing result is that the mean concentration of radon, a radioactive gas is 50Bq/m3。
3:1000Bqh/m3, colour developing result is that the mean concentration of radon, a radioactive gas is 100Bq/m3, according to " in house
Radon consistence controls standard GB/T16146 " regulation, it to newly-built house, should be controlled, make flat in house in design and construction
The equivalent radon consistence annual mean that weighs is no more than 100Bq/m3。
4:2000Bqh/m3, colour developing result is that the mean concentration of radon, a radioactive gas is 200Bq/m3, according to " in house
Radon consistence controls standard GB/T16146 " regulation, it to built house, should be controlled, make flat in house in design and construction
The equivalent radon consistence annual mean that weighs is no more than 200Bq/m3.Radon is dense in the house proposed according to the international radiation protection committee (ICRP)
The instruction of the control range of degree, the requirement to room are 200-600Bq/m3。
5:4000Bqh/m3, colour developing result is that the mean concentration of radon, a radioactive gas is 400Bq/m3, according to " civilian to build
Build engineering indoor environmental pollution control range " in regulation, II class civil building engineering indoor radon concentration limit value be 400Bq/m3。
6:5000Bqh/m3, colour developing result is that the mean concentration of radon, a radioactive gas is 500Bq/m3.According to international anti-spoke
The instruction for penetrating the control range of radon consistence in the house of the committee (ICRP) proposition, the requirement to workplace are 500-
1500Bq/m3。
7:6000Bqh/m3, colour developing result is that the mean concentration of radon, a radioactive gas is 600Bq/m3.According to international anti-spoke
The instruction for penetrating the control range of radon consistence in the house of the committee (ICRP) proposition, the requirement to room are 200-600Bq/
m3。
8:15000Bqh/m3, colour developing result is that the mean concentration of radon, a radioactive gas is 1500Bq/m3, anti-according to the world
The instruction of the control range of radon consistence in the house that the radiation committee (ICRP) proposes, the requirement to workplace are 500-
1500Bq/m3, joined in positive control can cause the lead ion of same variable quantity to do reference.
Accumulative spoke of the radioactivity inert gas radon self-test kit provided in an embodiment of the present invention about indoor radioactive radon
Penetrate dosage, the special standard of national regulation.Referring especially to standard GB/T 50325, GB/T16146.Specific targets and inspection
As a result it will be attached in product packing box in specification.
Radioactivity inert gas radon self-test kit provided in an embodiment of the present invention:
1. should have field, radioactivity inert gas radon is tired suitable for indoor (such as work, live, public place) air
Count the autonomous detection of dose of radiation.
2. technical indicator measurement range: 0~15000Bqh/m3
Reagent needed for 3.
Radioactive radon is from check reagent (A), (B), (C), negative control, positive control.
4. operating procedure
The acquisition of 4.1 samples
Self-test kit package is removed, self-test box central groove outer cover is opened, room center to be measured is placed on and stands 10h,
Room needs airtight door window when measurement, and self-test box outer cover is covered after acquisition, places 4d, and so that radon is decayed completely becomes daughter production
Object.
The measurement of 4.2 radioactive radons
4.2.1 color operation
Be added dropwise respectively to three slots of self-test box from check reagent (A) 5 and dripped, add be mixed by inversion from check reagent (B) 2
Drop stands 30min, adds and drips from check reagent (C) 3, and colour developing result is observed within 5min and is compared with standard colorimetric block.
4.2.2 result prejudges
It (1), can be first if the liquid finally detected is apparent blue (using No. 4 standard colorimetric blocks as differentiation standard)
The concentration over-standard of radon, a radioactive gas in judgement sample is walked, (colour developing result color is shallower than No. 4 standard ratios if color change is unobvious
Color lump), then within the specified scope, concrete outcome illustrates to see " 5, result control " concentration of radioactive radon.
(2) corresponding negative, positive control, negative, normal (the positive and negative result difference of positive control colour developing be must be provided with
For 1, No. 8 standard colorimetric block) i.e. credible result, otherwise result is insincere.
5. result compares
As a result illustrate:
1:0Bqh/m3, colour developing result is that the mean concentration of radon, a radioactive gas is 0Bq/m3, as negative control.
2:500Bqh/m3, colour developing result is that the mean concentration of radon, a radioactive gas is 50Bq/m3。
3:1000Bqh/m3, colour developing result is that the mean concentration of radon, a radioactive gas is 100Bq/m3, according to " in house
Radon consistence controls standard GB/T16146 " regulation, it to newly-built house, should be controlled, make flat in house in design and construction
The equivalent radon consistence annual mean that weighs is no more than 100Bq/m3。
4:2000Bqh/m3, colour developing result is that the mean concentration of radon, a radioactive gas is 200Bq/m3, according to " in house
Radon consistence controls standard GB/T16146 " regulation, it to built house, should be controlled, make flat in house in design and construction
The equivalent radon consistence annual mean that weighs is no more than 200Bq/m3.Radon is dense in the house proposed according to the international radiation protection committee (ICRP)
The instruction of the control range of degree, the requirement to room are 200-600Bq/m3。
5:4000Bqh/m3, colour developing result is that the mean concentration of radon, a radioactive gas is 400Bq/m3, according to " civilian to build
Build engineering indoor environmental pollution control range " in regulation, II class civil building engineering indoor radon concentration limit value be 400Bq/m3。
6:5000Bqh/m3, colour developing result is that the mean concentration of radon, a radioactive gas is 500Bq/m3.According to international anti-spoke
The instruction for penetrating the control range of radon consistence in the house of the committee (ICRP) proposition, the requirement to workplace are 500-
1500Bq/m3。
7:6000Bqh/m3, colour developing result is that the mean concentration of radon, a radioactive gas is 600Bq/m3.According to international anti-spoke
The instruction for penetrating the control range of radon consistence in the house of the committee (ICRP) proposition, the requirement to room are 200-600Bq/
m3。
8:15000Bqh/m3, colour developing result is that the mean concentration of radon, a radioactive gas is 1500Bq/m3, anti-according to the world
The instruction of the control range of radon consistence in the house that the radiation committee (ICRP) proposes, the requirement to workplace are 500-
1500Bq/m3, joined in positive control can cause the lead ion of same variable quantity to do reference.
Below with reference to concrete analysis, the invention will be further described.
The present invention is the quantitative analysis of the stabilization daughter lead by generating to radon decay, indirectly tired to the radiation of Radon
Product dosage carries out quantitative analysis.Kit surface has selected aperture to be covered on sampling ware mouth for 0.8 μm of filter membrane, it is therefore an objective to hinder
Only leaded aerosol contaminants enter sampling container in air, with guarantee acquisition are declined after the radiation of gas radon enters sampling container
Raw daughter lead is sold of one's property, is shown in most cases, the aerodynamic diameter of these radioaerosols is all greater than
1 μm, and when the filter membrane with fenestra less than 1 μm carries out radioaerosol sampling, sampling efficiency is equal to or slightly less than 100%,
And decay daughter lead -210 is radon with the product of 1:1 radiative decay.Therefore, it is generated using lead ion and gold nano grain effect
Mimetic Peroxidase active catalytic H2O2TMB colour developing is aoxidized, and then realizes and the semi-quantitative analysis of radon is detected.
The present invention using radon sample of inductivity coupled plasma mass spectrometry (ICP-MS) method to acquisition before use, carried out early period
Measurement, has detected the presence of daughter lead, and carried out quantitative analysis, for the present invention provides scientific basis.The present invention also makes
Reality has been carried out with real-time radon radiation intergal dose of the measuring instrument the being widely used in the world-RAD7 emanometer to radon laboratory
When comparative determination, these data be the present invention establish radon radiation cumulative concentration and daughter lead between quantitative determination model, mention
Good scientific basis is supplied.At logarithmic relationship, fit equation is the concentration of daughter lead in the radiation intergal dose and sample of radon
cPb=4.96ln (cRn+ 1.09) -1.11, r=0.9965；Good linear relationship is presented therebetween in a certain range,
Equation of linear regression is cPb=2.3cRn- 0.11, r=0.9964, detection range is about 2.0 × 102- 2.0 × 105Bq·h/
m3。
Fig. 2 is the Mimetic Peroxidase provided in an embodiment of the present invention generated using lead ion and gold nano grain effect
Active catalytic H2O2TMB colour developing is aoxidized, and then realizes and figure is detected to the semi-quantitative analysis of radon.
Fig. 3 is kit standard color board provided in an embodiment of the present invention.
Fig. 4 is Radon sampling process analysis diagram provided in an embodiment of the present invention, uses diameter for the disposable of 70mm
Plastic culture dish is cladded with the cellulose mixture film in 0.8 μm of aperture, is stopped using cellulose mixture micropore mocromembrane except radon is with outer gas
The entrance of colloidal sol guarantees sampling.Using 0.2% acetic acid as absorbing liquid, the radon of acquisition decays into stable daughter in absorbing liquid210Pb.Four days are placed at room temperature after decaying completely, are settled to 10mL with 0.2% acetic acid, it is to be measured to place 4 DEG C of refrigerator storages.
Fig. 5 is that kit radon decay provided in an embodiment of the present invention generates daughter lead process.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (6)
1. a kind of application method of radioactivity inert gas radon self-test kit, which is characterized in that the radioactivity inert gas
The application method of radon self-test kit is indirectly flat to Radon by the quantitative analysis of the stabilization daughter lead generated to radon decay
Equal concentration carries out quantitative analysis, realizes user's self-test；The filter membrane that each sampling hole surface selecting hole diameter of kit is 0.8 μm covers
In sampling on ware mouth, for preventing leaded aerosol contaminants in air from entering sampling container；Utilize lead ion and gold nano
The Mimetic Peroxidase active catalytic H that grain effect generates2O2TMB colour developing is aoxidized, realizes and the semi-quantitative analysis of radon is detected.
2. the application method of radioactivity inert gas radon self-test kit as described in claim 1, which is characterized in that described to put
The application method of penetrating property inert gas radon self-test kit establishes the quantitative determination model between the cumulative concentration of radon and daughter lead；
Using big ware as sampler, ware mouth covers the cellulose mixture film that aperture is 0.8 μm, and 0.2% acetic acid conduct of 10mL is added in ware
Absorbing liquid is put into radon chamber and samples 10 samples；After sampling, with the lead in ICP-MS measurement sample, each sample is surveyed in parallel
It is 6 times fixed, while recovery testu is done, RSD=1.39%-3.06%, P=93.91%~106.44%；
The concentration of daughter lead is at logarithmic relationship, fit equation c in the intergal dose and sample of radonPb=4.96ln (cRn+1.09)-
1.11 r=0.9965；Equation of linear regression is cPb=2.3cRn- 0.11, r=0.9964, detection range is 2.0 × 102- 2.0
×105Bq·h/m3.11 blank sampling pipes are measured in parallel, according to CL=3Sb/ k formula, calculates detection and is limited to 184Bqh/
m3, far below the detection limit 2.1 × 10 of the cumulative measurement of radon in national standard method3Bq·h/m3。
3. a kind of radioactivity indifferent gas for the application method for implementing radioactivity inert gas radon self-test kit described in claim 1
Body radon self-test kit, which is characterized in that the radioactivity inert gas radon self-test kit is provided with
Plastic shell；
Composite fibre film, reagent trough are placed on the plastic shell；
Plastic outer cover is stamped on the plastic shell.
4. radioactivity inert gas radon self-test kit as claimed in claim 3, which is characterized in that built in the reagent trough；
9.50nmol/L gold nano, 0.2% acetic acid, 50mmol/L sodium citrate-hydrochloride buffer system, 10mmol/L hydrogen peroxide, 5.0
×10-3mol/L TMB。
5. radioactivity inert gas radon self-test kit as claimed in claim 3, which is characterized in that the radioactivity indifferent gas
The standard colorimetric item of body radon self-test kit are as follows:
0Bq·h/m3, colour developing result is that the mean concentration of radon, a radioactive gas is 0Bq/m3, as negative control；
500Bq·h/m3, colour developing result is that the mean concentration of radon, a radioactive gas is 50Bq/m3；
1000Bq·h/m3, colour developing result is that the mean concentration of radon, a radioactive gas is 100Bq/m3；
2000Bq·h/m3, colour developing result is that the mean concentration of radon, a radioactive gas is 200Bq/m3；
4000Bq·h/m3, colour developing result is that the mean concentration of radon, a radioactive gas is 400Bq/m3；
5000Bq·h/m3, colour developing result is that the mean concentration of radon, a radioactive gas is 500Bq/m3；
6000Bq·h/m3, colour developing result is that the mean concentration of radon, a radioactive gas is 600Bq/m3；
15000Bq·h/m3, colour developing result is that the mean concentration of radon, a radioactive gas is 1500Bq/m3。
6. a kind of radon using radioactivity inert gas radon self-test kit described in claim 3~5 any one continuously monitors
Instrument.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110849684A (en) * | 2019-11-19 | 2020-02-28 | 中国核动力研究设计院 | Device for preparing radioactive sample |
| CN115188515A (en) * | 2022-07-05 | 2022-10-14 | 核工业北京化工冶金研究院 | Uranium tailing multilayer covering treatment method and system based on waste rock covering |
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2018
- 2018-11-07 CN CN201811318708.6A patent/CN109297957A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110849684A (en) * | 2019-11-19 | 2020-02-28 | 中国核动力研究设计院 | Device for preparing radioactive sample |
| CN115188515A (en) * | 2022-07-05 | 2022-10-14 | 核工业北京化工冶金研究院 | Uranium tailing multilayer covering treatment method and system based on waste rock covering |
| CN115188515B (en) * | 2022-07-05 | 2023-08-04 | 核工业北京化工冶金研究院 | Uranium tailing multilayer coverage treatment method and system based on waste stone coverage |
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Application publication date: 20190201 |