CN201974384U - Test-paper card for detecting nitrite content - Google Patents
Test-paper card for detecting nitrite content Download PDFInfo
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- CN201974384U CN201974384U CN2011200514651U CN201120051465U CN201974384U CN 201974384 U CN201974384 U CN 201974384U CN 2011200514651 U CN2011200514651 U CN 2011200514651U CN 201120051465 U CN201120051465 U CN 201120051465U CN 201974384 U CN201974384 U CN 201974384U
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- test paper
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Abstract
The utility model discloses a test-paper card for detecting the nitrite content, which comprises a hollow test-paper box, color-rendering test paper and reaction test paper, wherein a test-paper fixing slot is arranged in the test-paper box, the color-rendering test paper and the reaction test paper are stacked in the test-paper fixing slot from top to bottom, and a color-rendering slot and a sample hole are drilled on a shell of the test-paper box. When the test-paper card is used for detecting the nitrite in a food, the detected sample liquid only needs to be dripped into the sample hole to obtain a detecting result after 3 to 6 minutes, and finally the quantitative analysis is carried out by contrasting with a standard colorimetric card. The test-paper card has the advantages of simple operating process, high detecting speed and high sensitivity.
Description
Technical field
The utility model relates to a kind of test card that is used for food safety detection, mainly detects the content of nitrite in food, potable water, tap water, the river.
Background technology
At present, the method that is used to detect nitrite mainly is a spectrometry, comprises that mainly spectrophotometric method, chemoluminescence method, fluorescence method, catalytic kinetics are sent out, infra-red method.But these methods all need to use expensive accurate instrument and equipment and complicated operating process, and present stage also has some nitrous acid detection kit to use, but the kit complex structure, and be liquid environment, being difficult for preserving, sensitivity is not high; It is that two kinds of key reaction medicines are immersed on the same test paper that test paper is also arranged, and exists sensitivity not high, and test paper itself is easy to change, is difficult for the shortcoming of preserving.
The utility model content
In order to overcome the deficiency of existing detection technique, i.e. equipment requirements height, detection method and process complexity, sensitivity is not high.The utility model provides a kind of nitrite quick measuring card, and this test card not only cost is low, and operating process is simple, and is highly sensitive, and detection speed is fast, and is also portable.
In order to realize above-mentioned technique effect, the technical solution of the utility model is,
A kind of test card that detects content of nitrite, the paper box that comprises hollow, colour developing test paper and reaction test paper, be provided with the test paper pickup groove in the described paper box, have the colour developing groove of penetrating strip and the sample well of circular hole on the shell of paper box, the position of described colour developing groove and sample well is vertical corresponding with the position of described test paper pickup groove, and the total length of colour developing groove and sample well is identical with the length of test paper pickup groove, described reaction test paper is identical with test paper pickup groove length and be fixed in the test paper pickup groove, the length of described colour developing test paper and colour developing groove is identical and overlay on the reaction test paper, and the position of colour developing test paper is vertical corresponding with the position of the groove that develops the color.
Described reaction test paper is for soaking into the test paper of sulfanilic acid.The preparation method is as follows: with 20% hydrochloric acid solution compound concentration is the aminobenzenesulfonic acid of 4g/L, soaks into the absorption back repeatedly dry twice.
Described colour developing test paper is for soaking into the test paper of hydrochloride naphthodiamide.The preparation method is as follows: with distilled water preparation 2g/L hydrochloride naphthodiamide solution, soak into adsorption dry.
Described paper box is that plastic cement is made.
The standard nitrite solution of variable concentrations is made standard color comparison card detect contrast for it, the concentration of standard card correspondence can be prepared into different concentration gradients according to different types of test sample, as doubling dilution standard nitrite concentration: 5.0mg/L, 2.5mg/L, 1.25mg/L, 0.625mg/L, 0.313mg/L, 0.156mg/L, 78ug/L, 39ug/L, 19.5ug/L, 9.75ug/L.
Technique effect of the present utility model is, the sample detection liquid elder generation that splashes into combines with the chemical substance on reacting test paper, then this compound flow through again the colour developing test paper develop the color then, compare with colorimetric card again, lowest detection is limited to 9.75 μ g/L, and 3-6min can draw testing result, and operating process is simple, detection speed is fast, and is highly sensitive.Can when containing nitrite, the test measured object measure the content of nitrite of measured object simultaneously.Can satisfy the detection that China's " food additives use hygienic standard " requires, this test card packs, and is easy to use, and storage life is more than 3 months.
Description of drawings
Fig. 1 is a schematic appearance of the present utility model;
Fig. 2 is a schematic internal view of the present utility model;
Wherein 1 is sample well, and 2 are the colour developing groove, and 3 are the colour developing test paper, and 4 are the reaction test paper, and 5 is the test paper pickup groove.
Embodiment
Be intended to further specify the utility model below in conjunction with embodiment, and unrestricted the utility model.
Referring to Fig. 1, Fig. 2, to react test paper 4 following, colour developing test paper 3 is in the last test paper pickup groove 5 that overlays in the paper box, the length of reaction test paper 4 equates with test paper pickup groove 5, the length of colour developing test paper 3 and the equal in length of colour developing groove 2, the internal structure of sample well 1 correspondence is a reaction test paper 4, and the inner structure of colour developing groove 2 correspondences is colour developing test paper 3.
During operation, sample detection liquid splashes into the chemical reaction combination that the back is and reaction test paper 4 soaks into from sample well 1, react the colour developing test paper 3 of compound inflow colour developing groove 2 correspondences then, chromogenic reaction can take place in 3-6min, compare standard color comparison card immediately again, further do quantitative test, simple to operate and detection speed is fast.And reaction test paper 4 processes repeat to soak into adsorption dry and make, and colour developing test paper 3 makes the developing sensitivity height through soaking into adsorption dries.
Claims (4)
1. test card that detects content of nitrite, it is characterized in that, the paper box that comprises hollow, colour developing test paper and reaction test paper, be provided with the test paper pickup groove in the described paper box, have the colour developing groove of penetrating strip and the sample well of circular hole on the shell of paper box, the position of described colour developing groove and sample well is vertical corresponding with the position of described test paper pickup groove, and the total length of colour developing groove and sample well is identical with the length of test paper pickup groove, described reaction test paper is identical with test paper pickup groove length and be fixed in the test paper pickup groove, the length of described colour developing test paper and colour developing groove is identical and overlay on the reaction test paper, and the position of colour developing test paper is vertical corresponding with the position of the groove that develops the color.
2. test card according to claim 1 is characterized in that, described reaction test paper is for soaking into the test paper of sulfanilic acid.
3. test card according to claim 1 is characterized in that, described colour developing test paper is for soaking into the test paper of hydrochloride naphthodiamide.
4. test card according to claim 1 is characterized in that, described paper box is that plastic cement is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200514651U CN201974384U (en) | 2011-03-01 | 2011-03-01 | Test-paper card for detecting nitrite content |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200514651U CN201974384U (en) | 2011-03-01 | 2011-03-01 | Test-paper card for detecting nitrite content |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201974384U true CN201974384U (en) | 2011-09-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200514651U Expired - Fee Related CN201974384U (en) | 2011-03-01 | 2011-03-01 | Test-paper card for detecting nitrite content |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201974384U (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103076324A (en) * | 2011-12-31 | 2013-05-01 | 长春吉大·小天鹅仪器有限公司 | Method and device for rapid semiquantitative field detection of nitrite in food |
| CN104535712A (en) * | 2014-12-26 | 2015-04-22 | 华南师范大学 | Test paper for rapidly testing nitrite and standard colourimetric card and application of test paper |
| CN106018397A (en) * | 2016-06-21 | 2016-10-12 | 华南理工大学 | Test paper for detecting activity of alkaline xylanase and preparation method of test paper |
| CN106525837A (en) * | 2016-12-07 | 2017-03-22 | 无锡艾科瑞思产品设计与研究有限公司 | Natamycin determination method and natamycin determination card |
| CN107764810A (en) * | 2016-08-16 | 2018-03-06 | 上海泓宝绿色水产股份有限公司 | A kind of quick detection test paper of Nitrite and preparation method thereof |
| CN108680572A (en) * | 2018-06-25 | 2018-10-19 | 江苏大学 | A kind of color/fluorescence dual signal visualization quickly the method for detection nitrite and application |
| CN108931518A (en) * | 2018-05-25 | 2018-12-04 | 洛阳理工学院 | A kind of nitrite ionic selectivity Test paper and the preparation method and application thereof |
| CN109374617A (en) * | 2018-12-12 | 2019-02-22 | 江苏经贸职业技术学院 | A kind of additive detection device and method for bacon detection |
| CN111208128A (en) * | 2020-01-21 | 2020-05-29 | 谱尼测试集团股份有限公司 | Test paper for rapidly detecting nitrite content |
| CN111208127A (en) * | 2020-01-21 | 2020-05-29 | 谱尼测试集团股份有限公司 | Nitrite rapid detection test paper |
-
2011
- 2011-03-01 CN CN2011200514651U patent/CN201974384U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103076324A (en) * | 2011-12-31 | 2013-05-01 | 长春吉大·小天鹅仪器有限公司 | Method and device for rapid semiquantitative field detection of nitrite in food |
| CN104535712A (en) * | 2014-12-26 | 2015-04-22 | 华南师范大学 | Test paper for rapidly testing nitrite and standard colourimetric card and application of test paper |
| CN106018397A (en) * | 2016-06-21 | 2016-10-12 | 华南理工大学 | Test paper for detecting activity of alkaline xylanase and preparation method of test paper |
| CN106018397B (en) * | 2016-06-21 | 2018-10-09 | 华南理工大学 | A kind of detection alkalescent xylanase vigor test paper and preparation method thereof |
| CN107764810A (en) * | 2016-08-16 | 2018-03-06 | 上海泓宝绿色水产股份有限公司 | A kind of quick detection test paper of Nitrite and preparation method thereof |
| CN106525837A (en) * | 2016-12-07 | 2017-03-22 | 无锡艾科瑞思产品设计与研究有限公司 | Natamycin determination method and natamycin determination card |
| CN108931518A (en) * | 2018-05-25 | 2018-12-04 | 洛阳理工学院 | A kind of nitrite ionic selectivity Test paper and the preparation method and application thereof |
| CN108931518B (en) * | 2018-05-25 | 2021-04-13 | 洛阳理工学院 | Nitrite ion selective detection test paper and preparation method and application thereof |
| CN108680572A (en) * | 2018-06-25 | 2018-10-19 | 江苏大学 | A kind of color/fluorescence dual signal visualization quickly the method for detection nitrite and application |
| CN109374617A (en) * | 2018-12-12 | 2019-02-22 | 江苏经贸职业技术学院 | A kind of additive detection device and method for bacon detection |
| CN111208128A (en) * | 2020-01-21 | 2020-05-29 | 谱尼测试集团股份有限公司 | Test paper for rapidly detecting nitrite content |
| CN111208127A (en) * | 2020-01-21 | 2020-05-29 | 谱尼测试集团股份有限公司 | Nitrite rapid detection test paper |
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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 |
Granted publication date: 20110914 Termination date: 20150301 |
|
| EXPY | Termination of patent right or utility model |