CN206710315U - A kind of short vulcanization hydrogen capillary testing tube - Google Patents
A kind of short vulcanization hydrogen capillary testing tube Download PDFInfo
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- CN206710315U CN206710315U CN201720386555.3U CN201720386555U CN206710315U CN 206710315 U CN206710315 U CN 206710315U CN 201720386555 U CN201720386555 U CN 201720386555U CN 206710315 U CN206710315 U CN 206710315U
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- capillary
- testing tube
- hydrogen
- layer
- short vulcanization
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Abstract
The utility model discloses a kind of short vulcanization hydrogen capillary testing tube, it fills packed layer in pipe and pipe by capillary and formed, packed layer includes absorbed layer, conversion zone, color layer and fixed bed, wherein absorbed layer and fixed bed are formed by absorbent cotton filling, conversion zone is made up of the silica gel for having adsorbed fluorescence probe, and color layer is made up of pure silicon glue.Capillary testing tube of the present utility model can realize the quick identification and detection of high selectivity to hydrogen sulfide in aqueous phase, with the dual visualization function that changes colour under natural light and ultraviolet light, and it is easy to carry, simple to operate, it is easy to real time monitoring, has potential application prospect in environmental testing.
Description
Technical field
A kind of detection device for hydrogen sulfide is the utility model is related to, it is more particularly to a kind of that hydrogen sulfide in aqueous phase quickly may be used
Hydrogen sulfide capillary testing tube depending on changing identification and detection.
Background technology
Hydrogen sulfide is a kind of acute extremely toxic substance, is widely present in mining mine, non-ferrous metal metallurgy and sulfur-bearing oil and opens
Adopt etc. in production process and the place such as urban sewage pipe, place where the garage is piled up and vegetables pickling pool.The hydrogen sulfide pair of low concentration
Eye, respiratory system and nervous centralis etc. all have an impact, and sucking a small amount of high-concentration hydrogen sulfide can be in fatal in the short time.Hydrogen sulfide has
Rotten egg smell, but (＞ 4.6ppm) makes one smell passivation and loses perception on the contrary during high concentration, is especially having other
It is insecure by detected by scent hydrogen sulfide under the complex environment of penetrating odor species coexistence.Hydrogen sulfide poisoning is hindered in recent years
Die event repeatedly to occur, major reason is a lack of fast and effectively in-situ check and test method and in time judged.
The detection method of hydrogen sulfide has colorimetric method, electrochemical methods and gas chromatography etc., although these methods
There is higher sensitivity, but need large-scale instrument and equipment, not readily portable, sample pretreatment is complicated, detection time length, needs specialty
Human users, it is not easy to live detection in real time.In recent years, although thering is hydrogen sulfide test paper and prod etc. to be designed and develop
And applied to the detection of hydrogen sulfide, but the deficiencies of selectivity low and poor anti jamming capability be present, it is highly prone to the shadow of environmental factor
Ring, be difficult to realize the scene detection in real time of complex sample.Therefore, design and develop Novel vulcanization hydrogen fast and effectively Site Detection
Device has important practical significance.
The content of the invention
For existing the shortcomings of the prior art, the utility model is using capillary glass tube as carrier, with specific recognition
The fluorescent probe molecule of hydrogen sulfide is developer, with reference to chromatography principle, produces a kind of short vulcanization hydrogen capillary testing tube,
To solve existing detection device for hydrogen sulfide, Portable belt, complex operation, detection time be not longer, selectivity is low and anti-interference is poor
Problem.
The utility model purpose is to provide a kind of short vulcanization hydrogen capillary testing tube, to realize to hydrogen sulfide in aqueous phase
High selectivity quickly identification and detection.
The purpose of the utility model, is realized in the following way：
Packed layer in a kind of short vulcanization hydrogen capillary testing tube, including capillary filling pipe and pipe, packed layer include tight successively
Contiguity tactile absorbed layer, conversion zone, color layer and fixed bed.
Further, described capillary filling pipe is that internal diameter is 1-2mm, and length is 100-120mm clear glass capillary
Pipe.
Further, described absorbed layer and fixed bed are formed by absorbent cotton is tightly packed, and packed height is 2-3 mm.
Further, described conversion zone is formed by the silica gel for having adsorbed hydrogen sulfide fluorescence probe is tightly packed, and filling is high
Spend for 3-5mm.
Further, the hydrogen sulfide fluorescence probe of the conversion zone is preferably NR-DNBS and NR-NBD, more preferably NR-
DNBS。
Further, the quality of the hydrogen sulfide fluorescence probe of the conversion zone is 0.5-2.0 μ g.
Further, described color layer is formed by silica gel is tightly packed, packed height 20-25mm.
Further, described silica gel is thin layer or column layer chromatography silicone rubber, mesh number 200-400；More preferably thin layer
Chromatographic silica gel, mesh number 300-400.
The hydrogen sulfide fluorescence probe structure of conversion zone and its with hydrogen sulfide reaction Discoloration mechanism it is as follows：
The above-mentioned thin testing tube of short vulcanization hydrogen mao mao is to the Visual retrieval of hydrogen sulfide in aqueous phase, described visualization bag
Include the fluorescence discoloration visualization under color change visualization and the ultraviolet light under natural light.
The beneficial effects of the utility model are：
Absorbed layer of the present utility model contacts with sample, sample solution filtered and it is rapid under the promotion of capillarity on
Conversion zone is moved to, hydrogen sulfide reacts rapidly in conversion zone with probe molecule, and product enters developer layer with solvent and quickly opened up
Open and show red ribbon, and launch under uviol lamp the fluorescence of red, and probe molecule shows blueness in itself, unstressed configuration, because with
Solvent movement slowly rests on conversion zone, realizes the detection to hydrogen sulfide accordingly.The utility model is simple in construction, carrying side
Just, simple to operate, discoloration is obvious, has the dual visualization function that changes colour under natural light and ultraviolet light, can be achieved to sulphur in aqueous phase
Change the quick visualization identification and detection of hydrogen, selectivity is high, strong antijamming capability.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with the accompanying drawings and embodiment the present invention is further detailed explanation, what deserves to be explained is, following mM
Represent mmol/L.
As shown in figure 1, the utility model includes packed layer in capillary filling pipe 1 and pipe, packed layer includes closely connecing successively
Tactile absorbed layer 2, conversion zone 3, color layer 4 and fixed bed 5；Capillary filling pipe 1 is that internal diameter is 1mm, and length is 100mm capillary
Glass tube, absorbed layer 2 and fixed bed 5 are formed by absorbent cotton is tightly packed, and packed height 2mm, conversion zone 3 is by having adsorbed 0.6 μ
G hydrogen sulfide fluorescence probe NR-DNBS silica gel is tightly packed to be formed, and packed height 3mm, color layer 4 is closely filled out by silica gel
Fill and form, packed height 20mm, the silica gel of conversion zone 3 and color layer 4 is tlc silica gel, mesh number 300-400.
The hydrogen sulfide fluorescence probe structure of conversion zone 3 and its with hydrogen sulfide reaction Discoloration mechanism it is as follows：
In order to detect effect of the present utility model, it is illustrated using all kinds of experiments of following examples.
The response of embodiment 1 is tested
(1) preparation of hydrogen sulfide sample solution：In 10mL volumetric flasks, 4mL hydrogen sulfide solution (hydrogen sulfide water is added
Concentration/mM of solution is respectively 0,0.02,0.05,0.1,0.2,0.4,0.6,0.8,1.0,2.0,5.0), add 2.0mL's
HEPES (0.2M, pH=7.4) cushioning liquid, is then settled to 10mL with tetrahydrofuran, produces the hydrogen sulfide sample of various concentrations
Solution.
(2) detection of hydrogen sulfide：0.2mL hydrogen sulfide sample solution is taken to add in 2mL small test tube, by the utility model
The absorbed layer of hydrogen sulfide capillary testing tube contact 30s with sample solution in small test tube, take out, color observed under natural light and is become
Change and observe fluorescence under ultraviolet light (365nm).As a result show, testing tube color layer can be observed under natural light and be changed into red,
And concentration of hydrogen sulfide is bigger, red deeper, red ribbon is also longer, and minimum developing concentration is 0.1mM；Under ultraviolet light it can be seen that
Testing tube color layer launches red fluorescence, and concentration of hydrogen sulfide is bigger, and red fluorescence is stronger, and minimum developing concentration is that 0.02mM (becomes
Color mechanism is as described above).It can be seen that testing tube can realize the quick response (30s) to hydrogen sulfide, discoloration is obvious, has natural light
The dual visualization identification function of fluorescence discoloration, high sensitivity are simple to operate under lower discoloration and ultraviolet light.
The selectivity experiment of embodiment 2
(1) 1.0mM hydrogen sulfide sample solution is prepared by the compound method of hydrogen sulfide sample solution in response experiment,
(various anion are 10mM various anion sample solutions：S2-, I-, Cl-, Br-,C2O4 2-, SO3 2-, HSO3 -, F-,NO2 -,
Ac-, SO42-,NO3 -, S2O3 2-, CO3 -, SCN-, HCO3 -)。
(2) by the detection method of hydrogen sulfide in response experiment respectively to hydrogen sulfide sample solution and various anion samples
Solution is detected using hydrogen sulfide capillary testing tube of the present utility model.As a result show, testing tube can produce bright to hydrogen sulfide
Aobvious change colour response, and to other anion, even if concentration is 10 times of hydrogen sulfide, also without change colour response, it is seen then that this reality
There is very high selectivity with detection of the new testing tube to hydrogen sulfide.
Embodiment 3 is tested to the anti-interference of sulfurated hydrogen detection
(1) preparation of sample solution coexists with anion for hydrogen sulfide：In 10mL volumetric flasks, 2mM vulcanization is sequentially added
Aqueous solution of hydrogen 2mL, 20mM anionic water solution 2mL, (various anion are： S2-, I-, Cl-, Br-,C2O4 2-, SO3 2-,
HSO3 -, F-,NO2 -, Ac-, SO4 2-,NO3 -, S2O3 2-, CO3 -, SCN-, HCO3 -), 0.2M HEPES (pH=7.4) cushioning liquid
2.0mL, 10mL then is settled to tetrahydrofuran, produces various hydrogen sulfide and sample solution coexists with anion.
(2) sample solution and sulphur coexists to hydrogen sulfide and anion respectively in the detection method of hydrogen sulfide in being tested by response
Change hydrogen sample solution to be detected using hydrogen sulfide capillary testing tube of the present utility model.As a result show, survey of the present utility model
Test tube coexists that to become colour response caused by sample solution almost not poor to hydrogen sulfide sample solution and to hydrogen sulfide and anion
Not, i.e., detection that also will not be to hydrogen sulfide when the anion of 10 times amounts coexists produces obvious interference.It is it can be seen that of the present utility model
Detection of the testing tube to hydrogen sulfide has very high noise immunity.
Above-described embodiment is only used for illustrating the present utility model, rather than the present utility model is limited
System, in spirit of the present utility model and scope of the claims, to any made by the present utility model
Modifications and changes, both fall within protection domain of the present utility model.
Claims (10)
1. a kind of short vulcanization hydrogen capillary testing tube, it is characterised in that fill packed layer in pipe and pipe, packed layer bag including capillary
Include the absorbed layer being in close contact successively, conversion zone, color layer and fixed bed.
2. short vulcanization hydrogen capillary testing tube as claimed in claim 1, it is characterised in that described capillary filling pipe is transparent
Capillary glass tube.
3. short vulcanization hydrogen capillary testing tube as claimed in claim 1, it is characterised in that described absorbed layer and fixed bed is equal
Formed by absorbent cotton is tightly packed.
4. short vulcanization hydrogen capillary testing tube as claimed in claim 1, it is characterised in that described conversion zone is by having adsorbed sulphur
The silica gel of change hydrogen fluorescence probe is tightly packed to be formed.
5. short vulcanization hydrogen capillary testing tube as claimed in claim 1, it is characterised in that described color layer is close by silica gel
Filling forms.
6. short vulcanization hydrogen capillary testing tube as claimed in claim 4, it is characterised in that described hydrogen sulfide fluorescence probe choosing
From NR-DNBS or NR-NBD.
7. short vulcanization hydrogen capillary testing tube as claimed in claim 4, it is characterised in that described hydrogen sulfide fluorescence probe
Quality is 0.5~2.0 μ g.
8. the short vulcanization hydrogen capillary testing tube as described in claim 4 or 5, it is characterised in that described silica gel is selected from thin layer
Chromatography or column layer chromatography silicone rubber, mesh number are 200~400.
9. short vulcanization hydrogen capillary testing tube as claimed in claim 1, it is characterised in that capillary filling pipe internal diameter be 1
~2mm, length are 100~120mm.
10. short vulcanization hydrogen capillary testing tube as claimed in claim 1, it is characterised in that the filling of absorbed layer and fixed bed
Highly it is 2~3mm；The packed height of conversion zone is 3~5mm；The packed height of color layer is 20~25mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720386555.3U CN206710315U (en) | 2017-04-13 | 2017-04-13 | A kind of short vulcanization hydrogen capillary testing tube |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720386555.3U CN206710315U (en) | 2017-04-13 | 2017-04-13 | A kind of short vulcanization hydrogen capillary testing tube |
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| CN206710315U true CN206710315U (en) | 2017-12-05 |
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| CN201720386555.3U Expired - Fee Related CN206710315U (en) | 2017-04-13 | 2017-04-13 | A kind of short vulcanization hydrogen capillary testing tube |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110389057A (en) * | 2018-04-23 | 2019-10-29 | 上海伯顿医疗设备有限公司 | Integrated multi-functional biological sample processor |
-
2017
- 2017-04-13 CN CN201720386555.3U patent/CN206710315U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110389057A (en) * | 2018-04-23 | 2019-10-29 | 上海伯顿医疗设备有限公司 | Integrated multi-functional biological sample processor |
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