CN113092662A - Carbon determination device based on potassium dichromate volumetric method and determination method thereof - Google Patents
Carbon determination device based on potassium dichromate volumetric method and determination method thereof Download PDFInfo
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- CN113092662A CN113092662A CN202110378773.3A CN202110378773A CN113092662A CN 113092662 A CN113092662 A CN 113092662A CN 202110378773 A CN202110378773 A CN 202110378773A CN 113092662 A CN113092662 A CN 113092662A
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- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
- G01N31/16—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using titration
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Abstract
The invention provides a carbon measuring device based on a potassium dichromate volumetric method and a measuring method thereof, which relate to the field of carbon measurement and comprise a heating box, wherein a measuring tube is arranged on the heating box, the side surface of the measuring tube is respectively connected with a sample adding mechanism and a titration mechanism which are fixed on the heating box, and the side surface and the top end of the measuring tube are respectively communicated with the bottom end and the top end of a condensing tube which is fixed on the heating box.
Description
Technical Field
The invention relates to the field of carbon determination, in particular to a carbon determination device based on a potassium dichromate volumetric method and a determination method thereof.
Background
The content of organic matters in the soil is an important index of the soil fertility, so that the determination of the content of the organic matters is of great significance for understanding the soil fertility condition, the organic matters are all substances containing carbon elements, the substances except carbon dioxide, carbonates, carbon monoxide, cyanogen substances, simple substance carbon and the like belong to the organic matters which are the origin of human life, therefore, in space exploration, the determination of carbon content in soil on the planet is an important reference for judging whether the planet has lives or is likely to reproduce lives, the determination methods of carbon elements comprise an infrared absorption method, an emission spectroscopy method, a wavelength dispersion X-ray method, a nonaqueous solution titration method, a chromatography method and the like, wherein a method commonly used in laboratories is the nonaqueous solution titration method, namely, a high-oxidizing substance is adopted to react with carbon element, and the carbon content is calculated by measuring the using amount of the high-oxidizing substance.
The patent number CN101581650B discloses a method for measuring the content of organic carbon in sodium aluminate slurry, which relates to a method for measuring the content of organic carbon in sodium aluminate slurry in the process flow of producing alumina by a mineral separation-Bayer process. The method is characterized in that the test process sequentially comprises the following steps: (1) taking a sodium aluminate slurry sample into a porcelain boat, drying the sample at low temperature for 30-50 minutes by adopting a combustion method and using acid-washed asbestos as a covering material, gradually heating the sample to 900 ℃, burning the sample for 2 minutes under the condition of introducing oxygen, absorbing generated CO2 by using potassium hydroxide, and measuring the total carbon content in the material by using a gas volumetric method; (2) determining the content of inorganic carbon in the sample by adopting an acid-base titration method; (3) the organic carbon content of the sample was determined by subtraction. According to the method, the process materials are subjected to proper reaction conditions, the total carbon is firstly measured, then the inorganic carbon in the materials is measured, the content of the organic carbon is measured by a gas volumetric method and an acid-base titration method, and the content of the organic carbon is measured by a differential subtraction method, so that the method is simple and effective.
However, potassium dichromate is used as a strong oxidant to react with carbon in a sample, so that potassium dichromate standard solution needs to be prepared, excessive standard solution needs to be added into a container where the sample is located, titration and observation of the standard solution need to be carried out, and potassium dichromate is used as a strong oxidant, so that the potassium dichromate is harmful to human bodies and has high risk of frequent contact.
Disclosure of Invention
The present invention is directed to a carbon measuring device and a measuring method thereof based on a potassium dichromate volumetric method, which solve the above problems.
In order to solve the technical problems, the invention adopts the following technical scheme: a carbon measuring device based on a potassium dichromate volumetric method comprises a heating box, wherein a measuring tube is arranged on the heating box, the side surface of the measuring tube is respectively connected with a sample adding mechanism and a titration mechanism which are fixed on the heating box, and the side surface and the top end of the measuring tube are respectively communicated with the bottom end and the top end of a condensing tube which is fixed on the heating box;
through titrating the mechanism and adding sample, potassium dichromate solution and concentrated sulfuric acid, the accessible is changed the mode of survey pipe and is realized continuous experiment, and the security is high, survey efficiency is high.
Preferably, the side surface of the measuring tube is respectively provided with a first port, a second port and a third port which are sequentially communicated with the bottom ends of the sample adding mechanism, the titration mechanism and the condenser tube;
the measuring tube is provided with three ports which are respectively connected with the sample adding mechanism, the titration mechanism and the condensation mechanism, so that the measuring tube is more convenient to be connected with each mechanism.
Preferably, the edges of the first port, the second port and the third port are fixedly connected with one end of an outer sleeve, and the inner side of the outer sleeve of the second port is fixedly connected with an inner sleeve extending into the measuring tube at intervals;
the port department sets up outer plug bush, the outer plug bush inboard fixed connection inner plug bush that the second port is connected, and the connected mode of pegging graft is comparatively convenient, and guarantees the leakproofness.
Preferably, the end part of the inner insert sleeve is communicated with a burette fixedly connected in the measuring tube, and a titration port of the burette is positioned in the middle of the measuring tube;
the inner plug bush is connected with the burette and is matched with the outer plug bush at the second port to form a double-layer channel, the channel between the outer plug bush and the inner plug bush is used for adding potassium dichromate and concentrated sulfuric acid, and the channel at the inner side of the inner plug bush is used for adding a reducing agent.
Preferably, the heating box is hollow, an electric heating wire is arranged in the heating box, and a slot is arranged on the outer side of the heating box and is spliced with the measuring tube;
a heating wire is arranged in the hollow part in the heating box and used for heating oil, and a measuring pipe is inserted in the heat-conducting and heat-collecting pipe frame of the pipe frame through the oil, so that the problem that the oil is difficult to clean due to direct contact of measurement and the oil is avoided;
the heating cabinet of bilayer structure can effectively obstruct the heat loss, and the jack is pegged graft with the pipe support and is made the plane section of pipe support can insert in the heating cabinet for add nice and warm survey pipe.
Preferably, the bottom end of the slot is provided with an illuminating lamp, the side surface of the pipe frame is provided with an observation window, and the top of the pipe frame is fixedly connected with a heat insulation handle;
set up the light, the pipe support side sets up the observation window and is used for observing the intraductal reaction condition of survey to slot bottom to decide reaction time.
Preferably, the titration mechanism comprises a titration box fixed at the top of the heating box, the titration box comprises a mixing cavity, a water cylinder and a material cylinder are fixed in the mixing cavity, material taking wheels are respectively and rotatably connected in the water cylinder and the material cylinder, a first telescopic material pipe which is inserted into an inner insertion sleeve of the second port is connected to the side surface of the mixing cavity, a solution cavity is connected to the side surface of the mixing cavity, and the solution cavity is inserted into an outer insertion sleeve of the second port through the second telescopic material pipe;
the titration box is internally provided with a water cylinder and a charging barrel, the proportion is controlled by a mode of rotationally connecting a material taking wheel, water and potassium dichromate are mixed in a fixed proportion to form a potassium dichromate standard solution, the potassium dichromate standard solution can be used and matched at any time, the phenomenon that the potassium dichromate solution is deteriorated to cause inaccurate detection data is avoided, a first telescopic material pipe and a second telescopic material pipe are respectively spliced with the two sides of the determination pipe, and the determination pipe is convenient to place and detach.
Preferably, the condenser pipe comprises an upper half pipe of the condenser box which penetrates through the top of the heating box and is fixed, the upper half pipe is rotatably connected with the heating box, one end of the upper half pipe is hermetically and rotatably connected with a lower half pipe which penetrates through the condenser box, the other ends of the upper half pipe and the lower half pipe are respectively connected with the telescopic pipe, and the feeding mechanism comprises a sample box of which the inside is fixedly connected with a sieve tray;
the condenser pipe is located the condensing box and first half pipe and second half pipe rotate to be connected, makes the condenser pipe can be for survey tub activity, and the condenser pipe is located the condensing box, condensation efficiency with higher speed.
A method for measuring a carbon measuring device based on a potassium dichromate volumetric method comprises the following steps
S1, connecting a measuring tube with a heating box, wherein the side surface of the measuring tube is respectively connected with a sample adding mechanism, a titration mechanism and one end of a condensation tube, and the top end of the measuring tube is communicated with the other end of the condensation tube;
s2, adding a sample to be measured into a sample adding mechanism, processing the sample by the sample adding mechanism, and adding the processed sample into a measuring tube;
s3, adding excessive potassium dichromate standard solution and concentrated sulfuric acid into the measuring tube by a titration mechanism, reacting a sample in the measuring tube with the potassium dichromate solution under the heating condition of a heating box, wherein the addition amount of the potassium dichromate standard solution and the concentrated sulfuric acid is controlled by the titration mechanism;
and S4, sequentially adding an indicator and a reducing agent into the measuring tube under the control of a titration mechanism, consuming the residual potassium dichromate solution through the reaction of potassium dichromate and the reducing agent, observing the color change of the solution in the measuring tube, and calculating the consumption of the reducing agent to obtain the potassium dichromate amount used for oxidizing carbon in the sample so as to obtain the carbon content, wherein in the measuring process, an operator is relatively isolated from the potassium dichromate solution and concentrated sulfuric acid, and the safety is high.
The invention has the beneficial effects that:
1. the potassium dichromate solution and the concentrated sulfuric acid solution are prepared in a mechanical mode, direct contact is not needed in the preparation and reaction processes, and the safety degree of measuring personnel in the measuring process is improved;
2. the mode of heating the measuring tube by the heating box is adopted, the problem that the measuring tube is difficult to clean after being subjected to oil bath is avoided, continuous measurement can be realized by replacing the measuring tube, and the measuring efficiency is high;
3. a water cylinder and a charging barrel in the titration mechanism are independently arranged and used along with the titration mechanism, so that the problem that the accuracy of a measurement result is influenced because the prepared potassium dichromate solution is exposed in the air and deteriorates is avoided;
4. titration mechanism, application of sample mechanism, condenser pipe all adopt with survey tub swing joint's mode, make survey pipe be convenient for take out.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view of a sample application mechanism, assay tube, in accordance with the present invention;
FIG. 3 is a cross-sectional view of a titration chamber of the present invention;
FIG. 4 is a cross-sectional view of a water cartridge, a feed cylinder of the present invention;
FIG. 5 is a schematic structural view of the material taking wheel according to the present invention;
FIG. 6 is a cross-sectional view of a condensing cartridge of the present invention;
reference numerals: 1. a heating box; 2. a sample adding mechanism; 21. a sample box; 22. a sample adding hopper; 23. a motor; 24. a sieve tray; 25. rolling the cylinder; 26. a transmission case; 27. a material conveying shaft; 3. a titration mechanism; 31. titrating a worm; 32. a water cylinder; 33. a charging barrel; 331. a material taking wheel; 3311. a trough; 34. a sealing cover; 35. a gear; 36. a mixing chamber; 37. a solution chamber; 38. a first telescopic material pipe; 39. a second telescopic material pipe; 4. a condensing cylinder; 41. a lower half pipe; 42. an upper half pipe; 5. a measuring tube; 51. a first port; 52. a second port; 53. a third port; 54. an inner plug bush; 6. an illuminating lamp.
Detailed Description
Specific embodiments of the present invention are described below with reference to the accompanying drawings.
Example 1
As shown in fig. 1 to 6, a carbon measuring device based on a potassium dichromate volumetric method comprises a heating box 1, wherein a measuring tube 5 is arranged on the heating box 1, the side surface of the measuring tube 5 is respectively connected with a sample adding mechanism 2 and a titration mechanism 3 fixed on the heating box 1, and the side surface and the top end of the measuring tube 5 are respectively communicated with the bottom end and the top end of a condensation tube fixed on the heating box 1.
Example 2
As shown in fig. 1 to 6, a carbon measuring device based on a potassium dichromate volumetric method comprises a heating box 1, wherein a measuring tube 5 is arranged on the heating box 1, the side surface of the measuring tube 5 is respectively connected with a sample adding mechanism 2 and a titration mechanism 3 fixed on the heating box 1, and the side surface and the top end of the measuring tube 5 are respectively communicated with the bottom end and the top end of a condensation tube fixed on the heating box 1;
the side of the measuring tube 5 is respectively provided with a first port 51, a second port 52 and a third port 53 which are sequentially communicated with the bottom ends of the sample adding mechanism 2, the titration mechanism 3 and the condensation tube.
The edges of the first port 51, the second port 52 and the third port 53 are inserted into one end of the outer sleeve, and the inner side of the outer sleeve of the second port 52 is fixedly connected with an inner sleeve 54 extending into the measuring tube 5 at intervals.
The end part of the inner plug sleeve 54 is communicated with a burette fixedly connected in the measuring tube 5, and the titration port of the burette is positioned in the middle of the measuring tube 5.
The sample adding mechanism 2 connected with the side surface of the measuring tube 5 is used for placing a sample in the sample adding hopper 22 when adding the sample, the sample falls on the sieve tray 24 under the action of gravity, then the motor 23 fixed at the bottom in the sample box 21 rotates, the transmission box 26 in transmission connection with the motor 23 respectively drives the material conveying shaft 27 and the rotating shaft which penetrates through the sieve tray 24 and is in rotation connection with the sieve tray 24, the rotating shaft is in rotation connection with the grinding cylinder 25 in rolling connection with the sieve tray 24, therefore, the sample with larger particles on the sieve tray 24 can be ground under the action of the pressure between the grinding cylinder 25 and the sieve tray 24 and falls into the material conveying cylinder 33 where the material conveying shaft 27 is positioned from the through hole on the sieve tray 24, the material conveying cylinder 33 is communicated with the first port 51 through the telescopic cylinder which is in axial sliding connection relative to the material conveying cylinder 33, the sample can enter the measuring tube 5 after being fully ground, and then the mixed solution of the potassium dichromate standard solution and the sulfuric acid solution is firstly added into the measuring tube 5 through the titration mechanism 3, and then measuring the carbon content in the sample by means of titration after the indicator is added.
Example 3
As shown in fig. 1 to 6, a carbon measuring device based on a potassium dichromate volumetric method comprises a heating box 1, wherein a measuring tube 5 is arranged on the heating box 1, the side surface of the measuring tube 5 is respectively connected with a sample adding mechanism 2 and a titration mechanism 3 fixed on the heating box 1, and the side surface and the top end of the measuring tube 5 are respectively communicated with the bottom end and the top end of a condensation tube fixed on the heating box 1;
the heating box 1 is hollow inside, heating wires are arranged in the heating box 1, slots are formed in the outer side of the heating box 1, and the slots are connected with the measuring tubes 5 in an inserting mode.
The bottom end of the slot is provided with a lighting lamp 6, the side face of the slot is provided with an observation window, and the top of the measuring tube 5 is fixedly connected with a heat insulation handle.
The inside cavity of heating pipe and set up the slot in the outside and be used for pegging graft survey pipe 5, can set up the heat-conducting plate in the slot and survey 5 contacts of pipe, survey 5 most positions in the slot of pipe, the conduction oil that heats inside through the heating wire in the heating pipe makes survey pipe 5 in the slot by the even heating, compare in direct oil bath heating and avoided survey pipe 5 to be located the inherent trouble problem of clearing up after taking out of heating oil, can keep heating uniformity and stability simultaneously, the slot side sets up and runs through the window, the bottom sets up the mode of light 6, be convenient for run through survey 5 middle eye chromatic change of pipe in the titration process in order to judge and titrate the terminal point.
Example 4
As shown in fig. 1-6, a carbon measuring device based on potassium dichromate volumetric method comprises a heating box 1, a measuring tube 5 is arranged on the heating box 1, the side surface of the measuring tube 5 is respectively connected with a sample adding mechanism 2 and a titration mechanism 3 fixed on the heating box 1, the side surface and the top end of the measuring tube 5 are respectively communicated with the bottom end and the top end of a condensation tube fixed on the heating box 1, the side surface of the measuring tube 5 is respectively provided with a first port 51, a second port 52 and a third port 53 which are sequentially communicated with the sample adding mechanism 2, the titration mechanism 3 and the bottom end of the condensation tube, the edges of the first port 51, the second port 52 and the third port 53 are inserted with one end of an outer sleeve, the inner side of the outer sleeve of the second port 52 is fixedly connected with an inner sleeve 54 extending into the measuring tube 5 at intervals, the end of the inner sleeve 54 is communicated with the titration tube fixedly connected in the measuring tube 5, the titration port of the burette is positioned in the middle of the measuring tube 5;
The titration tank comprises a mixing cavity 36 and a solution cavity 37, the solution cavity 37 is provided with an adding structure which is the same as that in the mixing cavity 36, the adding structure is not shown in the figure, namely, the solution cavity 37 is respectively provided with a cylinder body for storing potassium dichromate and water, the titration worm 31 is controlled to control the titration worm 31 to rotate so as to rotate the gear 35, a material taking wheel 331 which is fixedly connected with the gear 35 and is rotatably connected with the cylinder body rotates in the cylinder body, a material groove 3311 on the material taking wheel 331 carries a certain material to rotate to a material discharging opening on the side surface of the cylinder body, because the bottom surface of the material groove 3311 is an inclined surface, the material carried in the material groove 3311 can be discharged from the material discharging opening and mixed with a sulfuric acid solution in the solution tank, meanwhile, the water discharged from the other cylinder body in the solution tank is mixed with the potassium dichromate to form a standard solution, the sulfuric acid solution is communicated to enter the measuring pipe 5 through a second telescopic pipe 39, the water cylinder 32 and the material cylinder 33 in the mixing cavity 36 are respectively used for placing water and ferrous sulfate for titration, the ferrous sulfate and the water are mixed to form a ferrous sulfate solution by controlling a titration screw rod, the ferrous sulfate is gradually dripped into the measuring tube 5 through the first telescopic material tube 38 and the inner insertion sleeve 54, the color change of the potassium dichromate solution and the sample mixed solution in the measuring tube 5 is penetrated in the period, the consumption of the potassium dichromate in the reaction process of the sample and the potassium dichromate is calculated through the consumption of the ferrous sulfate, the carbon content in the sample plate is further obtained, a plurality of sealing covers 34 connected with all cavities are arranged at the top of the titration box, the materials are added in a mode of opening the sealing covers 34, and valves are arranged at the joints of the first telescopic material tube 38 and the second telescopic material tube 39 and the titration box.
Example 5
As shown in fig. 1 to 6, a carbon measuring device based on a potassium dichromate volumetric method comprises a heating box 1, wherein a measuring tube 5 is arranged on the heating box 1, the side surface of the measuring tube 5 is respectively connected with a sample adding mechanism 2 and a titration mechanism 3 fixed on the heating box 1, and the side surface and the top end of the measuring tube 5 are respectively communicated with the bottom end and the top end of a condensation tube fixed on the heating box 1;
the condenser pipe is including running through first half pipe 42 of the fixed condenser box in 1 top of heating cabinet, first half is rotated with heating cabinet 1 and is connected, first half pipe 42 one end and the sealed rotation of second half pipe 41 that runs through the condenser box are connected, first half pipe 42, second half pipe 41 other end respectively with telescopic tube connection, reinforced mechanism includes the sample box 21 of inside fixedly connected with sieve dish 24.
The condenser pipe sets up to first half 42 and the mode that second half 41 rotated and is connected, and the second half 41 in the condenser cylinder 4 sets up to the heliciform, makes the heating cabinet 1 heating back survey pipe 5 in the water vapor of evaporating condense back to survey pipe 5 under the cold water effect of condenser tank in, makes potassium dichromate solution concentration in survey pipe 5 remain stable, when placing or taking out survey pipe 5, makes condenser pipe and third port 53 separate through the mode of the flexible pipe of slip.
Claims (9)
1. The utility model provides a carbon assay device based on potassium dichromate volumetric method, includes heating cabinet (1), its characterized in that: be provided with survey pipe (5) on heating cabinet (1), survey pipe (5) side and be connected with fixed application of sample mechanism (2), titration outfit (3) on heating cabinet (1) respectively, survey pipe (5) side, top communicate with fixed condenser pipe bottom, top on heating cabinet (1) respectively.
2. The apparatus for measuring carbon according to claim 1, which is based on a potassium dichromate volumetric method, and comprises: the side of the measuring tube (5) is respectively provided with a first port (51), a second port (52) and a third port (53) which are sequentially communicated with the sample adding mechanism (2), the titration mechanism (3) and the bottom end of the condensation tube.
3. The carbon measuring apparatus according to claim 2, wherein the carbon measuring apparatus is characterized in that: the edges of the first port (51), the second port (52) and the third port (53) are inserted into one end of the outer sleeve, and the inner side of the outer sleeve of the second port (52) is fixedly connected with the inner sleeve (54) extending into the measuring tube (5) at intervals.
4. The apparatus for measuring carbon according to claim 3, wherein the apparatus comprises: the end part of the inner insert sleeve (54) is communicated with a burette fixedly connected in the measuring tube (5), and a titration port of the burette is positioned in the middle of the measuring tube (5).
5. The apparatus for measuring carbon according to claim 1, which is based on a potassium dichromate volumetric method, and comprises: the heating box (1) is hollow inside, heating wires are arranged in the heating box (1), slots are formed in the outer side of the heating box (1), and the slots are connected with the measuring tubes (5) in an inserting mode.
6. The apparatus for measuring carbon according to claim 5, which is based on the potassium dichromate volumetric method, and comprises: the bottom end of the slot is provided with a lighting lamp (6), the side face of the slot is provided with an observation window, and the top of the measuring tube (5) is fixedly connected with a heat insulation handle.
7. The apparatus for measuring carbon according to claim 3, wherein the apparatus comprises: titration outfit (3) are including being fixed in the titration case at heating cabinet (1) top, the titration case is including mixing chamber (36), mixing chamber (36) internal fixation has a water section of thick bamboo (32), feed cylinder (33), rotate respectively in a water section of thick bamboo (32), feed cylinder (33) and be connected with and get material wheel (331), mixing chamber (36) side is connected with first flexible material pipe (38) of pegging graft with interior plug bush (54) of second port (52), and solution chamber (37) is connected to mixing chamber (36) side, and solution chamber (37) are pegged graft through the outer plug bush of the flexible material pipe of second (39) and second port (52) department.
8. The apparatus for measuring carbon according to claim 1, which is based on a potassium dichromate volumetric method, and comprises: the condenser pipe is including first half pipe (42) that runs through the fixed condenser box in heating cabinet (1) top, first half rotates with heating cabinet (1) to be connected, first half pipe (42) one end and the sealed rotation of second half pipe (41) that runs through the condenser box are connected, first half pipe (42), second half pipe (41) other end respectively with telescopic tube connection, reinforced mechanism includes sample box (21) of inside fixedly connected with sieve dish (24).
9. The method for measuring a carbon measuring instrument based on the potassium dichromate volumetric method according to any one of claims 1 to 8, characterized in that: comprises the following steps
S1, connecting a measuring tube (5) with a heating box (1), wherein the side surface of the measuring tube (5) is respectively connected with a sample adding mechanism (2), a titration mechanism (3) and one end of a condensation tube, and the top end of the measuring tube (5) is communicated with the other end of the condensation tube;
s2, adding a sample to be measured into the sample adding mechanism (2), processing the sample by the sample adding mechanism (2), and adding the processed sample into the measuring tube (5);
s3, adding excessive potassium dichromate standard solution and concentrated sulfuric acid into the measuring tube (5) by the titration mechanism (3), reacting a sample in the measuring tube (5) with the potassium dichromate solution under the heating condition of the heating box (1), wherein the addition amount of the potassium dichromate standard solution and the concentrated sulfuric acid is controlled by the titration mechanism (3);
and S4, sequentially adding an indicator and a reducing agent into the measuring tube (5) under the control of the titration mechanism (3), consuming the residual potassium dichromate solution through the reaction of potassium dichromate and the reducing agent, observing the color change of the solution in the measuring tube (5), and calculating the consumption of the reducing agent to obtain the potassium dichromate amount used for oxidizing carbon in the sample so as to obtain the carbon content, wherein in the measuring process, an operator is relatively isolated from the potassium dichromate solution and concentrated sulfuric acid, and the safety is high.
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Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101419175A (en) * | 2007-10-24 | 2009-04-29 | 中国科学院沈阳应用生态研究所 | Method for detecting organic matter in soil |
| CN102590442A (en) * | 2012-02-07 | 2012-07-18 | 中粮生物化学（安徽）股份有限公司 | Determination method for organic carbon |
| CN102901794A (en) * | 2012-10-15 | 2013-01-30 | 谱尼测试科技股份有限公司 | Method for detecting organic matters in soil through potassium dichromate oxidation process |
| CN103969397A (en) * | 2014-05-15 | 2014-08-06 | 中国林业科学研究院热带林业实验中心 | Method for detecting organic carbon in plants and soil and heating device thereof |
| CN104330406A (en) * | 2014-10-28 | 2015-02-04 | 南京白云化工环境监测有限公司 | Method for measuring organic matters in soil |
| CN105537186A (en) * | 2016-02-26 | 2016-05-04 | 天津英利新能源有限公司 | Automatic cleaning device and method for graphite boat |
| CN205665215U (en) * | 2016-05-31 | 2016-10-26 | 马鞍山华盛冶金科技发展有限公司 | Detecting system of full iron content of iron content raw materials |
| CN107456887A (en) * | 2017-08-17 | 2017-12-12 | 深圳大学 | Automatic solution proportioning apparatus |
| CN110068664A (en) * | 2019-05-28 | 2019-07-30 | 菏泽学院 | A kind of BOD5Measure water sample reagent bottle |
| CN209333641U (en) * | 2018-11-06 | 2019-09-03 | 上海营可机械设备有限公司 | A kind of aerospace components oil removing alkaline solution preparation facilities |
| CN110470665A (en) * | 2019-09-18 | 2019-11-19 | 华南农业大学 | A kind of measuring method of the soil organism |
| CN209997644U (en) * | 2019-05-24 | 2020-01-31 | 贵州省中国科学院天然产物化学重点实验室(贵州医科大学天然产物化学重点实验室) | safety arrangement for chemistry experiments |
| CN211246625U (en) * | 2019-12-12 | 2020-08-14 | 烟台黄金职业学院 | Acid-alkali liquor burette system |
-
2021
- 2021-04-08 CN CN202110378773.3A patent/CN113092662B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101419175A (en) * | 2007-10-24 | 2009-04-29 | 中国科学院沈阳应用生态研究所 | Method for detecting organic matter in soil |
| CN102590442A (en) * | 2012-02-07 | 2012-07-18 | 中粮生物化学（安徽）股份有限公司 | Determination method for organic carbon |
| CN102901794A (en) * | 2012-10-15 | 2013-01-30 | 谱尼测试科技股份有限公司 | Method for detecting organic matters in soil through potassium dichromate oxidation process |
| CN103969397A (en) * | 2014-05-15 | 2014-08-06 | 中国林业科学研究院热带林业实验中心 | Method for detecting organic carbon in plants and soil and heating device thereof |
| CN104330406A (en) * | 2014-10-28 | 2015-02-04 | 南京白云化工环境监测有限公司 | Method for measuring organic matters in soil |
| CN105537186A (en) * | 2016-02-26 | 2016-05-04 | 天津英利新能源有限公司 | Automatic cleaning device and method for graphite boat |
| CN205665215U (en) * | 2016-05-31 | 2016-10-26 | 马鞍山华盛冶金科技发展有限公司 | Detecting system of full iron content of iron content raw materials |
| CN107456887A (en) * | 2017-08-17 | 2017-12-12 | 深圳大学 | Automatic solution proportioning apparatus |
| CN209333641U (en) * | 2018-11-06 | 2019-09-03 | 上海营可机械设备有限公司 | A kind of aerospace components oil removing alkaline solution preparation facilities |
| CN209997644U (en) * | 2019-05-24 | 2020-01-31 | 贵州省中国科学院天然产物化学重点实验室(贵州医科大学天然产物化学重点实验室) | safety arrangement for chemistry experiments |
| CN110068664A (en) * | 2019-05-28 | 2019-07-30 | 菏泽学院 | A kind of BOD5Measure water sample reagent bottle |
| CN110470665A (en) * | 2019-09-18 | 2019-11-19 | 华南农业大学 | A kind of measuring method of the soil organism |
| CN211246625U (en) * | 2019-12-12 | 2020-08-14 | 烟台黄金职业学院 | Acid-alkali liquor burette system |
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