CN110186745A - Se from Soil content measuring system - Google Patents
Se from Soil content measuring system Download PDFInfo
- Publication number
- CN110186745A CN110186745A CN201910525592.1A CN201910525592A CN110186745A CN 110186745 A CN110186745 A CN 110186745A CN 201910525592 A CN201910525592 A CN 201910525592A CN 110186745 A CN110186745 A CN 110186745A
- Authority
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- China
- Prior art keywords
- open
- top receptacle
- thermally conductive
- switch valve
- switch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000002689 soil Substances 0.000 title claims abstract description 20
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 20
- 238000010438 heat treatment Methods 0.000 claims abstract description 15
- 238000009833 condensation Methods 0.000 claims abstract description 9
- 230000005494 condensation Effects 0.000 claims abstract description 9
- 230000008676 import Effects 0.000 claims abstract description 8
- 238000009434 installation Methods 0.000 claims abstract description 8
- 238000002156 mixing Methods 0.000 claims abstract description 5
- 239000002253 acid Substances 0.000 claims description 14
- VLTRZXGMWDSKGL-UHFFFAOYSA-N perchloric acid Chemical compound OCl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-N 0.000 claims description 14
- 239000000126 substance Substances 0.000 claims description 9
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims description 8
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 7
- 229910017604 nitric acid Inorganic materials 0.000 claims description 7
- 238000010521 absorption reaction Methods 0.000 claims description 6
- 238000011217 control strategy Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 238000005485 electric heating Methods 0.000 claims 1
- 150000003839 salts Chemical class 0.000 claims 1
- 239000011669 selenium Substances 0.000 abstract description 29
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 abstract description 20
- 229910052711 selenium Inorganic materials 0.000 abstract description 20
- 238000005259 measurement Methods 0.000 abstract description 7
- 238000012546 transfer Methods 0.000 abstract description 2
- 239000000243 solution Substances 0.000 description 8
- 239000012488 sample solution Substances 0.000 description 7
- 239000000523 sample Substances 0.000 description 6
- 239000007789 gas Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000005303 weighing Methods 0.000 description 5
- 206010028980 Neoplasm Diseases 0.000 description 3
- 238000001391 atomic fluorescence spectroscopy Methods 0.000 description 3
- 230000029087 digestion Effects 0.000 description 3
- 150000004678 hydrides Chemical class 0.000 description 3
- 238000007689 inspection Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000012496 blank sample Substances 0.000 description 2
- 201000011510 cancer Diseases 0.000 description 2
- 230000001079 digestive effect Effects 0.000 description 2
- 235000013305 food Nutrition 0.000 description 2
- 235000011389 fruit/vegetable juice Nutrition 0.000 description 2
- 210000004185 liver Anatomy 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 235000015097 nutrients Nutrition 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000011573 trace mineral Substances 0.000 description 2
- 235000013619 trace mineral Nutrition 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 240000006079 Schisandra chinensis Species 0.000 description 1
- 235000008422 Schisandra chinensis Nutrition 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 235000006708 antioxidants Nutrition 0.000 description 1
- 239000012472 biological sample Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000002848 electrochemical method Methods 0.000 description 1
- 230000037149 energy metabolism Effects 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000001676 hydride generation atomic fluorescence spectroscopy Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- -1 hydrogen Compound Chemical class 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000012452 mother liquor Substances 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 238000003947 neutron activation analysis Methods 0.000 description 1
- 238000000918 plasma mass spectrometry Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000002798 spectrophotometry method Methods 0.000 description 1
- 238000010183 spectrum analysis Methods 0.000 description 1
- 239000012086 standard solution Substances 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/34—Purifying; Cleaning
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/44—Sample treatment involving radiation, e.g. heat
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Engineering & Computer Science (AREA)
- Sampling And Sample Adjustment (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
The present invention relates to a kind of Se from Soil content measuring systems, open-top receptacle including repeatable dismounting, open-top receptacle is connected with filling subsystem and temperature control subsystem, filling subsystem includes the switch valve of two-bit triplet electromagnetic switch, the import connection mixing sour container of switch valve, another import is connected with hydrochloric acid container, and outlet connection is located at the refueling nozzle above open-top receptacle；Temperature control subsystem includes the oil bath ring cavity being wrapped in around open-top receptacle, oil bath ring cavity has been sequentially connected in series heating device and oil pump by oil circuit, the thermally conductive wire body being twist coiled in around open-top receptacle is embedded in oil bath ring cavity, thermally conductive wire body is connected with thermally conductive sliding sleeve, heat-pipe apparatus is coated in thermally conductive sliding sleeve, evaporator section is thermally conductive to be connected with electric calorifie installation, and condensation segment is thermally conductive to be connected with heat pump assembly.Using valve and switch control, the mode of oil bath and heat transfer heating is realized and carries out selenium content measurement to measuring samples automatically, eliminates a large amount of manpowers, measurement efficiency is higher.
Description
Technical field
The invention belongs to Trace Elements in Soil to examine field more particularly to a kind of Se from Soil content measurement system
System.
Background technique
Selenium is one of the essential trace elements of the human body.May be used as light-sensitive material, electrolytic manganese industry catalyst, animal body must
The general selenium collocation Schisandra chinensis such as the beneficial nutrient of the nutrient and plant needed makes nourishing the liver piece, there is liver protecting function.
Its content in food depends on the Se content of different geographical soil.As long as selenium is rich in soil, then the food therefrom grown
Object necessarily has selenium.Medicine findings of the survey show the high area of soil selenium-containing amount, and the cancer morbidity of place crowd is obviously than containing
The low area of selenium amount is lower.Research shows that the effective measures of anti-curing cancers are selenium-supply, because selenium participates in, collective is anti-oxidant and energy
Metabolism is tieed up health selenium-supply by selenium and is immunized in adjusting, resists cell mutation, prevent the various aspects such as the generation of cancer from playing particularly significant
Effect.
Have at present to the measuring method of Selenium In Some Selenium-rich Biological Samples content: atomic absorption spectrography (AAS), Neutron activation analysiss, inductive coupling
Plasma Mass Spectrometry, ultraviolet spectrophotometry, electrochemical methods and Hydride Generation-atomic Fluorescence Spectrometry.Wherein hydrogen
Compound occurs --- and the advantages of atomic fluorescence spectrometry is: detection limit is low, and the range of linearity is wide, easy to operate, operating cost,
Hydride makes a large amount of matrix element not can enter atomizer, thus not only spectra1 interfer- is few, but also chemistry disruption
It is low.
The common soil selenium-containing method of inspection is in existing physical and chemical inspection field: 1) matching using selenium national standard solution as mother liquor
The gradient selenium Standard Applying Solution of 0-50 μ g/kg is made；Being occurred using hydride --- atomic fluorescence spectrometry is to selenium standard application
Liquid is measured, and is drawn standard curve according to the measurement result of selenium Standard Applying Solution and is established regression equation；(2) nitric acid is used:
The mixed acid that the volume ratio of perchloric acid is 3-4:1-2 carries out resolution processing, the temperature control that the resolution uses to pedotheque
At 150 DEG C -180 DEG C, digestion time was controlled at 1-2 hours, and then carry out digestion solution catches up with sour processing, and sour temperature is caught up with to select
180-210℃；Concentrated hydrochloric acid is added in catching up with acid processing treated digestion solution to be restored at 95-110 DEG C of temperature, it is then right
Reducing solution constant volume obtains sample solution；(3) hydride is respectively adopted --- atomic fluorescence spectrometry is to blank sample and sample
Product solution is measured；The content of selenium in sample solution: X=(C-C0) × V/m (I) is obtained according to public formula (I)；In formula: X is sample
The content of selenium in product solution, unit are ng/kg or micro- gram per liter (μ g/kg or μ g/L)；C is the survey of sample solution digestive juice
Fixed concentration, unit are micro- gram per liter (μ g/L)；C0 is that blank sample digestive juice measures concentration, and unit is micro- gram per liter of (μ g/
L)；M is sample solution quality or volume), unit is gram or milliliter (g or mL)；V is total volume after sample solution constant volume, unit
For milliliter (mL).
But when chemically examining for upper physical and chemical inspection method pedotheque, existing test instrument can only be relied on, is such as sent out
Raw bottle, alcolhol burner etc., not only the physical demands of experimental labor is larger, and efficiency compares bottom, causes entire procedure automatic
Change degree is lower, time-consuming and laborious.
Summary of the invention
The purpose of the present invention is to provide a kind of time saving and energy saving Se from Soil content measuring system, technical solutions
It is as follows:
Se from Soil content measuring system, the open-top receptacle including repeatable dismounting, open-top receptacle are connected with filling
Subsystem and temperature control subsystem, filling subsystem include the switch valve of two-bit triplet electromagnetic switch, an import of switch valve
The mixing sour container for holding perchloric acid and nitric acid is connected, another import is connected with the hydrochloric acid container for holding concentrated hydrochloric acid,
Outlet connection is located at the refueling nozzle above open-top receptacle；
Temperature control subsystem includes the oil bath ring cavity being wrapped in around open-top receptacle, and oil bath ring cavity has been sequentially connected in series by oil circuit
Heating device and oil pump are embedded with the thermally conductive wire body being twist coiled in around open-top receptacle, thermally conductive wire body in oil bath ring cavity
The part stretched out from oil bath ring cavity is thermally conductive to be connected with thermally conductive sliding sleeve, and being coated in thermally conductive sliding sleeve can be opposite in evaporator section and cold
The heat-pipe apparatus to reciprocatingly slide between solidifying section, evaporator section is thermally conductive to be connected with electric calorifie installation, and condensation segment is thermally conductive to be connected with heat pump assembly.
Further, electric calorifie installation and heat pump assembly are attempted by same electrical circuit through single-pole double-throw switch (SPDT).
Further, single-pole double-throw switch (SPDT) is relay switch, mixes and is serially connected with electromagnetic type between sour container and switch valve
First switch valve, the second switch valve of electromagnetic type is serially connected between hydrochloric acid container and switch valve.
Further, the weighing dress that the weight of open-top receptacle and its interior substance is weighed positioned at bottom is provided in oil bath ring
It sets, the heat-insulated electric pushrod being connected with for pushing it to slide on thermally conductive sliding sleeve.
Further, first switch valve, second switch valve, switch valve, oil pump, single-pole double-throw switch (SPDT), weighing dress
It sets and is connected on same controller with electric pushrod, the control strategy of the controller is as follows:
1) differentiate that meausring apparatus weighs whether weight is more than setting weight, be judged in open-top receptacle not putting if being no more than
Enter sample, be judged to being put into sample in open-top receptacle if being more than and enter in next step；
2) mixed acid that perchloric acid and nitric acid mix is added into open-top receptacle, and opens simultaneously heating device and electricity
Heat conducting sleeve is pushed to condensation segment by thermal, until temperature is stablized to 150 DEG C -180 DEG C in open-top receptacle, and keeps 1-2 small
When；
3) temperature for improving heating device, temperature in open-top receptacle is stablized to 180 DEG C -210 DEG C and carries out catching up with acid；
4) temperature of heating device is reduced, and heat conducting sleeve is pushed to evaporator section, heat pump is opened, by temperature in open-top receptacle
Cooling is stablized to 95 DEG C -110 DEG C.
Further, Sour gas disposal subsystem, Sour gas disposal subsystem packet are connected with above open-top receptacle
Vacuum pump is included, vacuum pump is serially connected with the absorption nozzle above open-top receptacle and between absorption nozzle and vacuum pump
Filter device is removable in filter device to be equipped with the filter core that neutralize sour gas middle acid substance.
Beneficial effects of the present invention are as follows:
Using valve and switch control, the mode of oil bath and heat transfer heating is realized and automatically carries out measuring samples containing selenium
Measurement not only eliminates a large amount of manpowers, and measurement efficiency is higher compared to the mode of traditional pure hand dipping.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of Se from Soil content measuring system of the present invention.
Specific embodiment
Embodiment 1:
Se from Soil content measuring system of the invention can be realized to selenium content automatic measurement in pedotheque, nothing
Realization hand-manipulated need to be relied on, but the automatic operation is mainly preparing the sample solution stage, in the preparation for completing sample solution
Afterwards, open-top receptacle must be removed to carry out spectrum analysis from system.The system specific structure is as follows:
The Se from Soil content measuring system is mainly by host and its matched filling subsystem and temperature control subsystem
It constitutes.
Host includes the open-top receptacle 1 of the shell of engineering plastics material and the repeatable dismounting being arranged thereon, the shape knot
Structure is similar to electric cooker, and open-top receptacle 1 uses the open cup of transparent material.Housing top surface is equipped with depressed area, can facilitate opening
The pick-and-place of container 1.The weighing device positioned at 1 central lower of open-top receptacle is additionally provided in shell, the weighing device is for weighing
The weight of open-top receptacle 1 and its interior substance.
Filling subsystem includes the switch valve 2 of two-bit triplet electromagnetic switch, and an import of switch valve 2 is connected for containing
The mixing sour container 3 of perchloric acid and nitric acid is put, another import is connected with the hydrochloric acid container 4 for holding concentrated hydrochloric acid, outlet connection
Refueling nozzle above open-top receptacle 1.The first switch valve of electromagnetic type is serially connected between mixing sour container 3 and switch valve 2
Door 5, is serially connected with the second switch valve 6 of electromagnetic type between hydrochloric acid container 4 and switch valve 2.
Temperature control subsystem includes the oil bath ring cavity 7 being wrapped in around open-top receptacle 1, and oil bath ring cavity 7 is successively gone here and there by oil circuit
Be connected to heating device 8 and oil pump 9, be embedded in oil bath ring cavity 7 be twist coiled in it is copper thermally conductive around open-top receptacle 1
Wire body 10, the part that thermally conductive wire body 10 is stretched out from oil bath ring cavity 7 is thermally conductive to be connected with thermally conductive sliding sleeve 11, installs in thermally conductive sliding sleeve 11
There is the heat-pipe apparatus 12 that opposite can be reciprocatingly slided between evaporator section and condensation segment, evaporator section is thermally conductive to be connected with electric calorifie installation
13, the thermally conductive heat pump assembly 14 for being connected with semiconductor refrigerating sheet form of condensation segment.Electric calorifie installation 13 and heat pump assembly 14 are through hilted broadsword
Commutator 15 is attempted by same electrical circuit.Single-pole double-throw switch (SPDT) 15 is relay switch, heat-insulated on thermally conductive sliding sleeve 11 to be connected with
Electric pushrod for pushing it to slide.
First switch valve 5, second switch valve 6, switch valve 2, oil pump 9, single-pole double-throw switch (SPDT) 15, meausring apparatus and
Electric pushrod is connected on same controller, and the control strategy of the controller is as follows:
1) differentiate that meausring apparatus weighs whether weight is more than setting weight, be determined as in open-top receptacle 1 not if being no more than
It is put into sample, be judged to being put into sample in open-top receptacle 1 if being more than and is entered in next step；
2) mixed acid that perchloric acid and nitric acid mix is added into open-top receptacle 1, and opens simultaneously 8 He of heating device
Heat conducting sleeve is pushed to condensation segment by electric calorifie installation 13, until temperature is stablized to 150 DEG C -180 DEG C in open-top receptacle 1, and keeps 1-
2 hours；
3) temperature for improving heating device 8, temperature in open-top receptacle 1 is stablized to 180 DEG C -210 DEG C and carries out catching up with acid；
4) temperature of heating device 8 is reduced, and heat conducting sleeve is pushed to evaporator section, opens heat pump, it will be warm in open-top receptacle 1
Degree cooling is stablized to 95 DEG C -110 DEG C.
Embodiment 2:
Compared to embodiment 1, difference is, increases on the basis of the above a set of for removing the acid of tail gas middle acid substance
Property gas handling subsystem, including vacuum pump, vacuum pump, which is serially connected with the absorption nozzle above open-top receptacle 1 and is located at, to be inhaled
Filter device between attached nozzle and vacuum pump is removable in filter device to be equipped with the filter that neutralize sour gas middle acid substance
Core.On the one hand it can ensure that sour gas is not exceeded in efflux gas, meet environmental requirement；On the other hand it can guarantee open-top receptacle 1
Overhead gas is not mingled with excessive acid gas, the accuracy of guarantee test.
Claims (6)
1. Se from Soil content measuring system, which is characterized in that the open-top receptacle including repeatable dismounting, open-top receptacle connect
It is connected to filling subsystem and temperature control subsystem, filling subsystem includes the switch valve of two-bit triplet electromagnetic switch, switch valve
An import connect the mixing sour container for holding perchloric acid and nitric acid, another import is connected with the salt for holding concentrated hydrochloric acid
Sour container, outlet connection are located at the refueling nozzle above open-top receptacle；
Temperature control subsystem includes the oil bath ring cavity being wrapped in around open-top receptacle, and oil bath ring cavity has been sequentially connected in series heating by oil circuit
Device and oil pump, are embedded with the thermally conductive wire body being twist coiled in around open-top receptacle in oil bath ring cavity, and thermally conductive wire body is from oil
The part stretched out in bath ring cavity is thermally conductive to be connected with thermally conductive sliding sleeve, and being coated in thermally conductive sliding sleeve can be opposite in evaporator section and condensation segment
Between the heat-pipe apparatus that reciprocatingly slides, evaporator section is thermally conductive to be connected with electric calorifie installation, and condensation segment is thermally conductive to be connected with heat pump assembly.
2. Se from Soil content measuring system according to claim 1, which is characterized in that electric calorifie installation and heat pump dress
It sets and is attempted by same electrical circuit through single-pole double-throw switch (SPDT).
3. Se from Soil content measuring system according to claim 2, which is characterized in that single-pole double-throw switch (SPDT) be after
Electric switch mixes the first switch valve that electromagnetic type is serially connected between sour container and switch valve, hydrochloric acid container and switch valve
Between be serially connected with the second switch valve of electromagnetic type.
4. Se from Soil content measuring system according to claim 3, which is characterized in that be provided with position in oil bath ring
Weigh the meausring apparatus of the weight of open-top receptacle and its interior substance in bottom, it is heat-insulated on thermally conductive sliding sleeve to be connected with for pushing it
The electric pushrod of sliding.
5. Se from Soil content measuring system according to claim 4, which is characterized in that first switch valve,
Two controlled valves, switch valve, oil pump, single-pole double-throw switch (SPDT), meausring apparatus and electric pushrod are connected on same controller, should
The control strategy of controller is as follows:
1) differentiate that meausring apparatus weighs whether weight is more than setting weight, be judged to not being put into sample in open-top receptacle if being no more than
Product are judged to being put into sample in open-top receptacle and enter in next step if being more than；
2) mixed acid that perchloric acid and nitric acid mix is added into open-top receptacle, and opens simultaneously heating device and electric heating dress
It sets, heat conducting sleeve is pushed to condensation segment, until temperature is stablized to 150 DEG C -180 DEG C in open-top receptacle, and kept for 1-2 hours；
3) temperature for improving heating device, temperature in open-top receptacle is stablized to 180 DEG C -210 DEG C and carries out catching up with acid；
4) temperature of heating device is reduced, and heat conducting sleeve is pushed to evaporator section, heat pump is opened, by greenhouse cooling in open-top receptacle
Stablize to 95 DEG C -110 DEG C.
6. Se from Soil content measuring system as claimed in any of claims 1 to 5, which is characterized in that spacious
Sour gas disposal subsystem is connected with above mouth container, Sour gas disposal subsystem includes vacuum pump, vacuum pump concatenation
Have and be located at the absorption nozzle above open-top receptacle and the filter device between absorption nozzle and vacuum pump, in filter device
It is removable that the filter core that can neutralize sour gas middle acid substance is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910525592.1A CN110186745B (en) | 2019-06-18 | 2019-06-18 | System for measuring content of selenium in soil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910525592.1A CN110186745B (en) | 2019-06-18 | 2019-06-18 | System for measuring content of selenium in soil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110186745A true CN110186745A (en) | 2019-08-30 |
| CN110186745B CN110186745B (en) | 2020-08-28 |
Family
ID=67722258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910525592.1A Active CN110186745B (en) | 2019-06-18 | 2019-06-18 | System for measuring content of selenium in soil |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87216671U (en) * | 1987-12-19 | 1988-10-19 | 南开大学 | Analyzer for selenium generated by hydrides |
| CN1068195A (en) * | 1991-06-28 | 1993-01-20 | 中国科学院沈阳应用生态研究所 | Soil total nitrogen phosphorus potassium combined digestion method and apparatus |
| CN102519931A (en) * | 2011-12-20 | 2012-06-27 | 苏州硒谷科技有限公司 | Method for rapid determination of content of selenium in soil sample |
| US20150318159A1 (en) * | 2014-05-01 | 2015-11-05 | Perkinelmer Health Sciences, Inc. | Systems and methods for detection and quantification of selenium and silicon in samples |
| CN106770117A (en) * | 2016-12-28 | 2017-05-31 | 许昌学院 | A kind of assay method of Selenium in Food |
| CN109682662A (en) * | 2019-01-27 | 2019-04-26 | 宁波市环境监测中心 | A kind of soil alkali fusion pre-treating method |
| CN208937601U (en) * | 2018-09-03 | 2019-06-04 | 王占辉 | Fully-automatic multi-channel urinates Iodine assay system |
-
2019
- 2019-06-18 CN CN201910525592.1A patent/CN110186745B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87216671U (en) * | 1987-12-19 | 1988-10-19 | 南开大学 | Analyzer for selenium generated by hydrides |
| CN1068195A (en) * | 1991-06-28 | 1993-01-20 | 中国科学院沈阳应用生态研究所 | Soil total nitrogen phosphorus potassium combined digestion method and apparatus |
| CN102519931A (en) * | 2011-12-20 | 2012-06-27 | 苏州硒谷科技有限公司 | Method for rapid determination of content of selenium in soil sample |
| US20150318159A1 (en) * | 2014-05-01 | 2015-11-05 | Perkinelmer Health Sciences, Inc. | Systems and methods for detection and quantification of selenium and silicon in samples |
| CN106770117A (en) * | 2016-12-28 | 2017-05-31 | 许昌学院 | A kind of assay method of Selenium in Food |
| CN208937601U (en) * | 2018-09-03 | 2019-06-04 | 王占辉 | Fully-automatic multi-channel urinates Iodine assay system |
| CN109682662A (en) * | 2019-01-27 | 2019-04-26 | 宁波市环境监测中心 | A kind of soil alkali fusion pre-treating method |
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| Publication number | Publication date |
|---|---|
| CN110186745B (en) | 2020-08-28 |
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