CN205981819U - Novel reduction of cadmium post device - Google Patents
Novel reduction of cadmium post device Download PDFInfo
- Publication number
- CN205981819U CN205981819U CN201620737830.7U CN201620737830U CN205981819U CN 205981819 U CN205981819 U CN 205981819U CN 201620737830 U CN201620737830 U CN 201620737830U CN 205981819 U CN205981819 U CN 205981819U
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- China
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- cadmium
- sample
- peristaltic pump
- cadmium post
- buffer solution
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- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The utility model discloses a novel reduction of cadmium post device is mainly become by sampling tube, buffer solution hose, peristaltic pump, cadmium post and the play appearance nest of tubes, and cadmium post one end is connected through the three -way pipe to sampling tube, buffer solution hose behind the peristaltic pump, and an appearance pipe is connected to the cadmium post other end. When using the device, sample and ammonium chloride buffer solution mix to advance appearance for the while, reduce sample and ammonium chloride buffer solution's quantity, and the environmental protection is high -efficient, and the percent reduction of analytical sample at the cadmium post is ensured to the accurate velocity of flow that mixes liquid of controlling of accessible numerical control peristaltic pump moreover. The utility model discloses a novel reduction of cadmium post device simple structure, easy to operate, sensitivity are high, stability is good, the degree of accuracy is high, can extensively be arranged in the monitoring of groundwater, surface water and sea water low concentration sample nitrate.
Description
Technical field
This utility model belongs to technical field of experiment equipment, and more particularly, to a kind of new cadmium pole reduction device, for ocean
Sample pre-treatments with nitrate and sea water total nitrogen in the water quality such as coastal seawater, estuarine water, surface water.
Background technology
In water body, nitrate is most stable of nitrogen compound in various form nitrogen-containing compounds under aerobic environment, is also oxygen-containing
Organic substance is through the final catabolite of mineralization.In surface water, nitrate pollutants are mainly derived from leather-making waste water, pickling
Waste water, some biochemical treatment facility water outlets and agricultural drain etc., Nitrate In Sea Water pollutant are mainly derived from pollution from land-based sources source.
Nitrate is phytoplankton and biological growth in lake and sea water, breeds one of requisite nutrient, the nitric acid of excess
Salt can cause surface water, Marine water eutrophication, thus bringing lake wawter bloom or red tide of sea, threatens lake and ocean life
State balances.Therefore, the nitrate in the water bodys such as surface water and sea water is monitored having very important significance.
At present, the monitoring method of Nitrate In Sea Water mainly has Cadmium reduction column (GB37178.4-2007《Marine monitoring is advised
Model》), Zinc Cadmium Reduction (GB/T12763.4-2007《Standard of marine survey》)；In fresh water, the monitoring method of nitrate mainly has
Cadmium reduction column (GB5750-2006《The drinking water standard method of inspection》), ultraviolet spectrophotometry etc..In actually used,
Because the percent reduction of Cadmium reduction column is high, the precision of experimental result and accuracy are high, and are widely used by each field.Existing cadmium post
Device mainly includes the motorless reservoir funnel with capillary tube, connection plug, cadmium post and cadmium post glass tubing, and this device has water
The mixed solution flow velocity of sample and ammonia cushioning liquid unstable thus affecting Cadmium column reduction rate, its experiment repeatability, precision and standard
Really property is poor, and tests that time-consuming it is impossible to accomplish batch quantity analysis.
Through retrieval, domestic a few patents have been related to cadmium pole reduction device, such as：
" a kind of cadmium pole reduction device " (201520430437.9 day for announcing of patent No. 2015-10-07) is it is ensured that liquid storage cylinder
Interior internal pressure is constant, so that the flow speed stability of mixed solution, improves experiment accuracy.Although it overcomes experiment reappearing
Property and the problem of poor accuracy, but this device is unpowered, and experimental implementation process is loaded down with trivial details, time-consuming it is impossible to carry out batch quantity analysis.
" nitrate cadmium pole reduction device " (201520393462.4 day for announcing of patent No. 2015-10-21) is it is proposed that a kind of
Dynamic cadmium pole reduction device, including sampling mechanism cadmium post, the first drive mechanism and wiper mechanism；The two ends of cadmium post connect respectively
It is connected to the sampling mechanism amount of money first drive mechanism, the first drive mechanism by sampling mechanism, testing liquid can be evacuated in cadmium post
And testing liquid back and forth movement can be driven.
A kind of " Cadmium column reduction detection means for full-automatic chemical analyser " (number of patent application 201410458646.4
Publication date 2014-12-03) Publication No. 104181319A it is proposed that the Cadmium column reduction detection means of full-automatic chemical analyser,
It is mainly used in biochemical equipment technical field, be characterized in being provided with three-way valve between sampling probe and generic connectivity pipe, in plunger tube
It is provided with three-way valve and generic connectivity pipe between, cadmium post and two three-way valve understandings, vacuum pump passes through that three-way valve is basic and sampling probe
And fluid path cleanout fluid fills to fill with cadmium post cleanout fluid and connects.
Latter two patents overcome traditional cadmium pole reduction device unpowered, experiment time-consuming, accuracy and precision difference
Problem, but still Shortcomings：(1) sampling mechanism only has a pipeline, and sample to be tested is mixed with ammonium chloride buffer solution for sample
Liquid, so, the consumption of sample and ammonium chloride buffer is very big, causes reagent waste；(2) its power set is vacuum pump, is difficult to
Accurately control testing sample through the flow velocity of cadmium post, thus having influence on Cadmium column reduction rate.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of simple, the easy operation of structure, sensitivity height, stability
New cadmium pole reduction device good, that accuracy is high, this device can be widely used in subsoil water, surface water and sea water low concentration sample
The monitoring of nitrate.
For solving above-mentioned technical problem, this utility model employs the following technical solutions：New cadmium pole reduction device, mainly by
Probe tube, buffer solution flexible pipe, peristaltic pump, cadmium post and go out sample pipe composition, probe tube, buffer solution flexible pipe pass through after peristaltic pump
Tee T connects cadmium post one end, and the cadmium post other end connects sample pipe.
Peristaltic pump is speed-regulating type peristaltic pump or flow type peristaltic pump.
The problem existing for existing cadmium pole reduction device, inventor has designed and produced a kind of new cadmium pole reduction device,
Main by probe tube, buffer solution flexible pipe, peristaltic pump, cadmium post with go out sample pipe and form, probe tube, buffer solution flexible pipe are through peristaltic pump
Afterwards cadmium post one end is connected by tee T, the cadmium post other end connects sample pipe.During using this device, sample and chloride buffer are molten
Liquid is to mix sample introduction simultaneously, reduces the consumption of sample and ammonium chloride buffer solution, environment-friendly high-efficiency, and can pass through numerical control peristaltic pump
Accurately control the flow velocity of mixed liquor it is ensured that analyzing the percent reduction in cadmium post for the sample.Compared with prior art, this utility model has
Advantage following outstanding：
1st, sample and ammonium chloride buffer consumption are few, reduce amount of reagent, environment-friendly high-efficiency.
2nd, relatively surely higher Cadmium column reduction rate, meets R (percent reduction) >=95%, meets《Marine monitoring specification》4th part：
Sea water analysis (GB17378.4-2007) and GB/T 5750.5-2006《Drinking water standard method of inspection inorganic non-metallic
Index》Nitrate measure in requirement to Cadmium column reduction rate it is ensured that data accuracy is high, favorable reproducibility.
3rd, analysis time greatly shortens, and analyzes a sample using this utility model and takes about 5 minutes, and conventional nothing
Power cadmium pole reduction device analyzes a sample about 15 minutes, and efficiency improves three times.
4th, cadmium post easily dismounts and activation is it is ensured that Cadmium column reduction rate reaches requirement it is ensured that experimental data high accuracy and essence
Density.
In a word, new cadmium pole reduction device structure of the present utility model simple, easily operation, sensitivity height, good stability,
Accuracy is high, can be widely used for the monitoring of nitrate in subsoil water, surface water and sea water low concentration sample.
Brief description
Fig. 1 is the structural representation of the new cadmium pole reduction device of this utility model.
In figure：1 probe tube, 2 buffer solution flexible pipes, 3 peristaltic pumps, 4 cadmium posts, 5 go out sample pipe.
Specific embodiment
Basic structure
As shown in figure 1, new cadmium pole reduction device of the present utility model, mainly by probe tube 1, buffer solution flexible pipe 2, compacted
Dynamic pump 3, cadmium post 4 and go out sample pipe 5 and form, probe tube, buffer solution flexible pipe connect cadmium post one end by tee T after peristaltic pump,
The cadmium post other end connects sample pipe.
Wherein, peristaltic pump is speed-regulating type peristaltic pump or flow type peristaltic pump, adjusts sample and buffer solution in order to accurate
Consumption；Cadmium post is helical form, and cadmium post shell is made using clear glass, and the implant that in cadmium post, filling preventing and treating cadmium grain drops is no
Bacterium one-level cotton or glass fibre, glass fibre is optimal, because its water penetration is preferably, and is not easily introduced pollutant；Pipeline choosing used
Select peristaltic pump special hose, it has, and elasticity is good, wearability is good, air-tightness is good, adsorptivity is low, non-aging, non-swelling, anti-corruption
Erosion, the low advantage of precipitate.
Using method
In this utility model cadmium pole reduction device, probe tube is used for into water sample, and buffer solution flexible pipe is used for providing ammonium chloride
Buffer, peristaltic pump provides solution quantitation onward impulse, and water sample and ammonium chloride buffer are mixed by tee T, and cadmium reduction column is by water
In sample, nitrate is quantitatively reduced to nitrite, and going out sample pipe provides sample output passage.Specifically used process is：Standard is pressed before experiment
Code requirement configures ammonium chloride buffer solution, assembles cadmium post and cadmium pole reduction device on request；First by probe tube and buffering
Solution is simultaneously placed in ammonium chloride buffer, extracts buffer entrance cadmium post with the rotating speed being suitable for and is activated；Activation completes
Afterwards, probe tube removal is placed in sample, with identical rotating speed, extracts the sample of (as 1: 1) and ammonium chloride in proportion respectively and delay
Rush solution mixing to simultaneously enter cadmium post and be reduced, sample goes out from going out sample pipe flow.Due to peristaltic pump stabilization of speed, can quantitatively provide sample
Product and the mixed liquor of ammonium chloride buffer, therefore mixed solution and cadmium post constant to the solution flow rate going out sample pipe from sample feeding pipe
Time of contact is basically identical, improves the preci-sion and accuracy of experiment.
Claims (2)
1. a kind of new cadmium pole reduction device it is characterised in that main by probe tube, buffer solution flexible pipe, peristaltic pump, cadmium post and
Go out sample pipe composition, probe tube, buffer solution flexible pipe connect cadmium post one end by tee T after peristaltic pump, and the cadmium post other end connects
Go out sample pipe.
2. new cadmium pole reduction device according to claim 1 it is characterised in that：Described peristaltic pump is speed-regulating type peristaltic pump
Or flow type peristaltic pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620737830.7U CN205981819U (en) | 2016-07-14 | 2016-07-14 | Novel reduction of cadmium post device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620737830.7U CN205981819U (en) | 2016-07-14 | 2016-07-14 | Novel reduction of cadmium post device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205981819U true CN205981819U (en) | 2017-02-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620737830.7U Expired - Fee Related CN205981819U (en) | 2016-07-14 | 2016-07-14 | Novel reduction of cadmium post device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205981819U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114755388A (en) * | 2022-06-15 | 2022-07-15 | 自然资源部第二海洋研究所 | Spiral copper-cadmium reduction device and method for seawater nitrate online analysis |
-
2016
- 2016-07-14 CN CN201620737830.7U patent/CN205981819U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114755388A (en) * | 2022-06-15 | 2022-07-15 | 自然资源部第二海洋研究所 | Spiral copper-cadmium reduction device and method for seawater nitrate online analysis |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170222 Termination date: 20170714 |