CN206540835U - A kind of Quantitative detection vacuum tube of nitrite in food - Google Patents
A kind of Quantitative detection vacuum tube of nitrite in food Download PDFInfo
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- CN206540835U CN206540835U CN201720100140.5U CN201720100140U CN206540835U CN 206540835 U CN206540835 U CN 206540835U CN 201720100140 U CN201720100140 U CN 201720100140U CN 206540835 U CN206540835 U CN 206540835U
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Abstract
The utility model discloses a kind of Quantitative detection vacuum tube of nitrite in food, glass detection pipe (1) including bottom end closure top end opening and water white transparency, glass detection pipe (1) is built with the solid detecting reagent (2) for detecting nitrite, glass detection pipe (1) inner vacuum, being provided with the mouth of pipe of glass detection pipe (1) is used for sealed rubber stopper (3), rubber stopper (3) is covered with the screw lid (4) for fixing rubber stopper, screw lid (4) is connected with the ferrule of glass detection pipe (1).The utility model is while can either ensure higher detection accuracy and faster detection speed, simplify operating procedure, reduce the requirement to testing staff, detection environment, and detection reagent is solid, vacuum environment is preserved, liquid reagent after not oxidizable, long shelf-life, detection pipe and detection easily reclaims, environment will not be polluted.
Description
Technical field
The utility model is related to food security field of fast detection, and the quick of more particularly to a kind of nitrite in food is determined
Amount detection vacuum tube.
Background technology
Nitrite is the limitation additive in food, through the adding to meat product frequently as colour former and aseptic applications
Work process, in addition, in some Pickles, because microbial action, nitrate may be reduced to nitrite and exist
In this based food.There are different limit standards in different food products nitrite.With the increasing of consumer's Consciousness of food security
By force, increasing people recognize the harm that excessive nitrite intake may be caused to human body.The excess of nitrite
Intake, may cause the symptoms such as uncomfortable in chest, expiratory dyspnea, Nausea and vomiting.In addition, nitrite can under culinary art or other conditions
It can be chemically reacted with the amino-compound in food, the carcinogenic substance such as generation nitrosamine.There is hair during nitrite poisoning event
It is raw：The problem of industrial and commercial bureau of Zhejiang Province found generally existing nitrite severe overweight in blood swallow product in 2012；6 lunar lacus in 2016
Food poisoning occurs for Nan Sheng Xiangtan Counties, tentatively appraises and decides and is poisoned by food caused by doubtful natrium nitrosum, local hospital
Successively accept the doubtful people of poisoning personnel 78 for medical treatment altogether.With the increasing of national food-safe control and monitoring, nitrite turns into food
One of big event of product safety detection.The assay method of current nitrite in food mainly has AAS, ion color
Spectrometry, sensor method, fluorescence method etc., these detection methods are accurate, precision is high, test limit is low, but complex pretreatment, detection
Time is long, and the requirement to factors such as testing staff, detection device, detection environment is higher, it is impossible to realize field quick detection.
The supervision of food security, to break away from its hysteresis quality, then needs detection that is easy, quick, accurate, being suitable for market Site Detection
Method and product.
The product for nitrite quick detection is generally liquid reagent in the market, and is commonly normal temperature and pressure storage
Product, its reagent is oxidizable and causes the shelf-life not long, and chemical pollutant is usually contained in the liquid after detection, reclaims difficult,
Arbitrarily abandon and easily cause environmental pollution.In addition, detection product is used for the qualitative detection of nitrite, it is difficult to accomplish live fast
Fast quantitative detection.
The content of the invention
The purpose of this utility model is the Quantitative detection vacuum tube for providing a kind of nitrite in food, can be right
Nitrite in food quantitatively detected, can either ensure higher detection accuracy and faster detection speed
Meanwhile, simplify operating procedure, reduce the requirement to testing staff, detection environment, and detection reagent is solid, and vacuum environment is protected
Deposit, not oxidizable, long shelf-life, the liquid reagent after detection pipe and detection easily reclaims, environment will not be polluted.
The utility model solves the technical scheme that its technical problem used：
A kind of Quantitative detection vacuum tube of nitrite in food, including bottom end closure top end opening and water white transparency
Glass detection pipe (1), glass detection pipe (1) is built with the solid detecting reagent (2) for detecting nitrite, the glass
Being provided with detection pipe (1) inner vacuum, the mouth of pipe of glass detection pipe (1) is used for sealed rubber stopper (3), rubber stopper (3) outer cover
Have for fixing the screw lid of rubber stopper (4), screw lid (4) is connected with the ferrule of glass detection pipe (1).
Detection pipe is built with the solid reagent for quantitatively detecting nitrite, for detecting that nitrite in food contains
Amount.Vacuumized inside detection pipe, while detection environmental stability is ensured, make detection reagent and air exclusion, it is not oxidizable,
Extend the holding time.During detection, it can be used and quantitative solution to be checked is conveyed into detection pipe with graduated syringe, with inspection
Reagent reacts in test tube, and the depth of reaction solution color is directly proportional to nitrite in solution content to be checked, and light splitting can be used
The equipment such as photometer detect its absorbance, and nitrite in solution content to be checked is accurately judged according to standard curve.Use this
Utility model carries out the detection of content of nitrite in foods, and testing result is accurately and reliably, easy to operate, without professional,
Detection time is short, and detects that reaction is completed in vacuum tube, it is easy to reclaim, environment will not be polluted.
Preferably, on the tube wall of glass detection pipe both sides at glass detection pipe (1) 8~10mm of top end face respectively
Hole (5) is vacuumized provided with one.Be easy to scale to vacuumize, tamponade encapsulation process.
Preferably, the cross section of rubber stopper (3) is T-shaped, the height of rubber stopper (3) is 12~15mm.Rubber stopper is by fourth
Base rubber is manufactured, still resilient after multiple acupuncture to be again sealed off, good sealing effect, 12~15mm of height, should can cover detection
Hole is vacuumized at the mouth of pipe.
Preferably, the height that rubber stopper (3) stretches into glass detection pipe (1) opening part is 10~12mm.
Preferably, being provided with through hole at the cover center of screw lid (4).During sample introduction, syringe needle may pass through screw lid
On through hole insertion rubber stopper.
Preferably, the internal vacuum of glass detection pipe (1) is 75~85kPa.Ensure the stability of detection environment.
Preferably, solid detecting reagent is the mixture of p-aminobenzene sulfonic acid, hydrochloride naphthodiamide and tartaric acid, glass
Detection pipe (1) includes 10~50mg of solid detecting reagent.
The beneficial effects of the utility model are：
Quantitatively detect, examine 1. the utility model can more be rapidly performed by nitrite in food compared to prior art
Survey result accurate and effective.
2. vacuum detecting pipe can provide relatively stable detection environment, testing result is accurate.
3. detection reagent is sealed in detection pipe, it is not necessary to is repeated to prepare, is simplified detecting step, shorten detection time, improves
Detection efficiency.
4. detection pipe is simply portable, easy to operate, not high to testing staff's technical requirements, it is particularly suitable for live quick
Detection.
5. detection reagent is not oxidizable, the holding time is long, the liquid after detection can be with centralized collection, and environmental pollution is small.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the present utility model.
In figure：1st, glass detection pipe, 2, solid detecting reagent, 3, rubber stopper, 4, screw lid, 5, vacuumize hole.
Embodiment
Below by specific embodiment, and with reference to accompanying drawing, the technical solution of the utility model is made further specifically
It is bright.
Embodiment：
A kind of Quantitative detection vacuum tube of nitrite in food as shown in Figure 1, including bottom end closure top are opened
The glass detection pipe 1 of mouth and water white transparency, glass detection pipe is built with the solid detecting reagent 2 for detecting nitrite, institute
Glass detection pipe inner vacuum is stated, vacuum is 75~85kPa.Having at the mouth of pipe of glass detection pipe is used for sealed rubber stopper
3, the cross section of rubber stopper is T-shaped, and the height of rubber stopper is 12~15mm, and rubber stopper stretches into the height of glass detection pipe opening part
Spend for 10~12mm.Rubber stopper 3 is covered with the screw lid 4 for fixing rubber stopper, screw lid 4 and the mouth of pipe of glass detection pipe 1
It is tightly connected, the implementation being tightly connected can be during thread connecting mode can also be snap fit, the capping of screw lid 4
Through hole is provided with the heart.One is respectively equipped with the tube wall of glass detection pipe both sides at 8~10mm of glass detection pipe top end face
It is individual to vacuumize hole 5.
Solid detecting reagent is in the mixture of p-aminobenzene sulfonic acid, hydrochloride naphthodiamide and tartaric acid, glass detection pipe
Containing 10~50mg of solid detecting reagent.Solid detecting reagent is constituted by weight：1 part of p-aminobenzene sulfonic acid, hydrochloric acid naphthalene second
0.6 part of diamines, 40 parts of tartaric acid.
Illustrate of the present utility model use by taking the detection of Nitrite Content of meat products determined as an example.
Content of nitrite standard curve is drawn first：Configuration content of nitrite is respectively 0.0mg/L, 1mg/L,
3mg/L, 5mg/L, 7mg/L, 10mg/L standard liquid.6 the utility model are taken, and are used respectively with graduated syringe
Each standard liquid 3mL is drawn, the rubber stopper 3 of each utility model is worn out respectively using the syringe needle of syringe, and by syringe
Standard liquid all in the glass detection pipe 1 of each utility models of injection.Each utility model is shaken, makes standard liquid and each glass
Solid detecting reagent 2 in detection pipe 1 fully reacts.After about 5 minutes, the suction of each utility model of spectrophotometric determination is used
Shading value, draws standard curve according to standard liquid content of nitrite, draws calibration curve equation.
Meat products is shredded, 5.0g samples is weighed and moves into beaker, add 20mL deionized waters, soak extraction 5 minutes.Cross
Filter, prepare measuring samples solution.Using with graduated syringe pipette samples solution 3mL.The utility model is taken out, note is used
The syringe needle of emitter wears out rubber stopper 3 and enters detection pipe 1, and by the whole implantation glass detection pipes 1 of liquid in syringe.Concussion
The utility model, makes sample solution fully be reacted with solid detecting reagent 2.After about 5 minutes, this reality of spectrophotometric determination is used
With new absorbance, according to calibration curve equation, sample solution nitrite is calculated.
The utility model after the completion of detection has the protection of screw lid 4 and rubber stopper 3 without occurring the leakage of detection liquid,
Liquid after detection can centralized recovery processing, do not result in the pollution of environment.
Embodiment described above is a kind of preferably scheme of the present utility model, not makees any to the utility model
Formal limitation, also has other variants and remodeling on the premise of without departing from the technical scheme described in claim.
Claims (6)
1. a kind of Quantitative detection vacuum tube of nitrite in food, including bottom end closure top end opening and water white transparency
Glass detection pipe (1), glass detection pipe (1) exists built with the solid detecting reagent (2) for detecting nitrite, its feature
In：Being provided with glass detection pipe (1) inner vacuum, the mouth of pipe of glass detection pipe (1) is used for sealed rubber stopper (3), rubber
Plug (3) is covered with the screw lid (4) for fixing rubber stopper, and screw lid (4) and the ferrule of glass detection pipe (1) connect
Connect.
2. a kind of Quantitative detection vacuum tube of nitrite in food according to claim 1, it is characterised in that：Away from
One, which is respectively equipped with, on tube wall from the glass detection pipe both sides at glass detection pipe (1) 8~10mm of top end face vacuumizes hole
(5)。
3. a kind of Quantitative detection vacuum tube of nitrite in food according to claim 1 or 2, its feature exists
In：The cross section of rubber stopper (3) is T-shaped, and the height of rubber stopper (3) is 12~15mm.
4. a kind of Quantitative detection vacuum tube of nitrite in food according to claim 3, it is characterised in that：Rubber
The height that plug (3) stretches into glass detection pipe (1) opening part is 10~12mm.
5. a kind of Quantitative detection vacuum tube of nitrite in food according to claim 1 or 2, its feature exists
In：Through hole is provided with the cover center of screw lid (4).
6. a kind of Quantitative detection vacuum tube of nitrite in food according to claim 1 or 2, its feature exists
In：The internal vacuum of glass detection pipe (1) is 75~85kPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720100140.5U CN206540835U (en) | 2017-01-23 | 2017-01-23 | A kind of Quantitative detection vacuum tube of nitrite in food |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720100140.5U CN206540835U (en) | 2017-01-23 | 2017-01-23 | A kind of Quantitative detection vacuum tube of nitrite in food |
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| Publication Number | Publication Date |
|---|---|
| CN206540835U true CN206540835U (en) | 2017-10-03 |
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ID=59940484
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720100140.5U Active CN206540835U (en) | 2017-01-23 | 2017-01-23 | A kind of Quantitative detection vacuum tube of nitrite in food |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109187346A (en) * | 2018-09-27 | 2019-01-11 | 刘沛明 | Portable food device for fast detecting |
| CN114624089A (en) * | 2022-03-15 | 2022-06-14 | 青岛市食品药品检验研究院（青岛市药品不良反应监测中心、青岛市实验动物和动物实验中心） | Device and method for pretreatment process of oxidation type hair dye inspection |
-
2017
- 2017-01-23 CN CN201720100140.5U patent/CN206540835U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109187346A (en) * | 2018-09-27 | 2019-01-11 | 刘沛明 | Portable food device for fast detecting |
| CN109187346B (en) * | 2018-09-27 | 2021-04-20 | 刘沛明 | Portable food rapid detection device |
| CN114624089A (en) * | 2022-03-15 | 2022-06-14 | 青岛市食品药品检验研究院（青岛市药品不良反应监测中心、青岛市实验动物和动物实验中心） | Device and method for pretreatment process of oxidation type hair dye inspection |
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