CN102004051A - Method for preparing standard formaldehyde sample for rapid food safety detection box - Google Patents
Method for preparing standard formaldehyde sample for rapid food safety detection box Download PDFInfo
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- CN102004051A CN102004051A CN2010105229555A CN201010522955A CN102004051A CN 102004051 A CN102004051 A CN 102004051A CN 2010105229555 A CN2010105229555 A CN 2010105229555A CN 201010522955 A CN201010522955 A CN 201010522955A CN 102004051 A CN102004051 A CN 102004051A
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Abstract
The invention discloses a method for preparing a standard formaldehyde sample for a rapid food safety detection box, which comprises the following steps of: (1) drying sodium chloride until the sodium chloride has constant weight; (2) weighing sodium formaldehyde sulfoxylate; (3) mixing the sodium chloride and the sodium formaldehyde sulfoxylate and uniformly grinding; (4) packaging in batch and packaging by using white capsules so as to prepare the standard formaldehyde sample. The standard formaldehyde sample is solid powder, the solid calibration sample is dissolved with a proper amount of distilled water during use, and the using method is easy and convenient to implement. The calibration sample and the sample are operated by an inspector; the consistency of four elements, namely temperature, a pH value, amount of a developing agent and reaction time is controlled, and the detection error of a traditional method can be avoided. The solid calibration sample is filled in a tube, is low in cost, convenient to carry and easy to preserve, and cannot volatilize; the inspector can intuitively detect whether the formaldehyde in the sample exceeds the standard without inspecting the standard by comparing the color of the solid calibration sample; and the standard formaldehyde sample is applied to a common rapid food safety detection box.
Description
Technical field
The present invention is with to utilize optical instrument to detect article relevant, furthermore, relevant with the detection of food.
Background technology
China has extensively promoted the food security Fast Detection Technique since 2004, by the fast detecting product, the safety that the reviewer can be in places such as community, supermarket, the market of farm produce, restaurants sends out food such as product to grain, vegetable and fruit, meat, water is monitored and sampling observation at any time in real time.Utilize Fast Detection Technique, just can measure in 10 minutes and whether contain tonyred in the thick chilli sauce, just can find steamed bun in 13 minutes and whether contain violated chemical constitutions such as carcinogen sodium formaldehyde sulfoxylate, formaldehyde, sulphuric dioxide, in addition, the content of nitrite of vegetable pesticide residue, cure foods also can be detected fast.
The food security fast detecting case that uses is to carry out standard correction with colorimetric card now, the detection of formaldehyde, sulphuric dioxide, nitrite is chrominance response in the fast detecting case, all chrominance responses must be followed temperature, potential of hydrogen, developer consumption and reaction time elemental, and wherein temperature of reaction, developer consumption and reaction time are relevant with the operator; And colorimetric card is a standard color comparison card, and operating personnel are uncontrollable, and this can bring bigger detection error.
By retrieval, in Chinese patent database, the application part that relates to food safety detection equipment has " multifunctional food toxic chemical pollutant residue detection instrument " No. 03240360.7, number 200410013417.8 " hyperchannel hand-held food safety detection instrument ", number 200710067674.3 " foodstuff safety multiple item quick detector ", number 200720112697.7 " a kind of food security fast detecting instrument " and No. 200910079872.0 " a kind of multifunctional expanded food safety rapid detecting equipments " etc., these patented technologies are still used traditional colorimetric card, still do not have the controlled detection method of the operating personnel of use.
Summary of the invention
Purpose of the present invention just is to provide the collocation method of a kind of food security fast detecting case with the formaldehyde standard model, and it is prepared when detecting voluntarily by operating personnel, and is now with the current, can eliminate the error that detects formaldehyde to greatest extent.
The food security fast detecting case of the present invention collocation method of formaldehyde standard model comprises:
(1) oven dry sodium chloride and constant weight;
(2) getting sodium formaldehyde sulfoxylate (being commonly called as of sodium formaldehyde sulphoxylate) weighs;
(3) getting sodium chloride and sodium formaldehyde sulfoxylate is that mixing in 1000: 5.2 and grinding are even according to mass ratio;
(4) packing with white capsule dress, obtains the formaldehyde standard model.
The purity of above-mentioned sodium chloride 〉=99.5%.
The purity of above-mentioned sodium formaldehyde sulfoxylate 〉=99.9%.
The fineness that the potpourri of above-mentioned sodium chloride and sodium formaldehyde sulfoxylate grinds is smaller or equal to 400 orders.
The white capsule subpackage of above-mentioned formaldehyde standard model, every part of quality is 0.100g.
Formaldehyde standard model provided by the invention is a solid state powder, with an amount of distilled water the dissolving of solid calibration sample is got final product during use, and is simple and convenient; Calibration sample and sample are testing staff operation, and control temperature, potential of hydrogen, developer consumption are consistent with the reaction time elemental, just can avoid the detection error of classic method; Solid calibration sample capsule subpackage, cost is low and be easy to carry, and can not volatilize, and is easy to preserve; With solid calibration sample colorimetric, as the boundary's point of limiting the quantity of, different samples are limited the quantity of inconsistent, realize that by changing the sample sample weighting amount testing staff need not look into standard, and whether the formaldehyde of energy visual inspection sample exceeds standard.Be applicable to food security fast detecting case commonly used.
Embodiment
Embodiment 1 preparation formaldehyde standard model: the sodium chloride and the constant weight of at first drying purity 〉=99.5%; Then get mixing of 100.0g sodium chloride and 0.52g sodium formaldehyde sulfoxylate and grinding evenly, fineness is smaller or equal to 400 orders, and content is 1000mg/kg; Use white capsule subpackage, every part of 0.100g obtains the formaldehyde standard model.
Embodiment 2 gets 5g ground rice sample and is dissolved in 10mL water, and fully vibration is static, to be measured.Take out formaldehyde standard model capsule, open, put into drying, clean small beaker; Adding the 10mL dissolved in distilled water in small beaker shakes up.Formaldehyde quick detection reagent A is injected B to be shaken up, make B reagent and splash into a B, splash into 2 C reagent again, get calibration solution respectively, sample supernatant 3 is added dropwise to detecting in the hole to detecting the hole, draw up and down with the application of sample pipe and to make the solution mixing, sample and calibration sample color contrast behind the 7min.If color sample is shallower than calibration sample, this sample is qualified so; If color sample is deeper than calibration sample, this sample need further detect so.
Embodiment 3 gets 5g bean curd stick sample and is dissolved in 10mL water, and fully vibration is static, to be measured.Take out formaldehyde standard model capsule, open, put into drying, clean small beaker; Adding the 10mL dissolved in distilled water in small beaker shakes up.Formaldehyde quick detection reagent A is injected B to be shaken up, make B reagent and splash into a B, splash into 2 C reagent again, get calibration solution respectively, sample supernatant 3 is added dropwise to detecting in the hole to detecting the hole, draw up and down with the application of sample pipe and to make the solution mixing, sample and calibration sample color contrast behind the 7min.If color sample is shallower than calibration sample, this sample is qualified so; If color sample is deeper than calibration sample, this sample need further detect affirmation so.
Claims (4)
1. food security fast detecting case is with the collocation method of formaldehyde standard model, and its feature comprises:
(1) oven dry sodium chloride and constant weight;
(2) getting sodium formaldehyde sulfoxylate (being commonly called as of sodium formaldehyde sulphoxylate) weighs;
(3) getting sodium chloride and sodium formaldehyde sulfoxylate is that mixing in 1000: 5.2 and grinding are even according to mass ratio;
(4) packing with white capsule dress, obtains the formaldehyde standard model.
2. in accordance with the method for claim 1, the purity that it is characterized in that described sodium chloride is 99.5%; The purity of described sodium formaldehyde sulfoxylate 〉=99.9%.
3. in accordance with the method for claim 1, it is characterized in that the fineness of described sodium chloride and sodium formaldehyde sulfoxylate potpourri grinding is smaller or equal to 400 orders.
4. in accordance with the method for claim 1, it is characterized in that the formaldehyde standard model of described packing is packed with white capsule, every part of quality is 0.100g.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010522955.5A CN102004051B (en) | 2010-10-28 | 2010-10-28 | Method for preparing standard formaldehyde sample for rapid food safety detection box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010522955.5A CN102004051B (en) | 2010-10-28 | 2010-10-28 | Method for preparing standard formaldehyde sample for rapid food safety detection box |
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| Publication Number | Publication Date |
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| CN102004051A true CN102004051A (en) | 2011-04-06 |
| CN102004051B CN102004051B (en) | 2014-04-16 |
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| CN201010522955.5A Expired - Fee Related CN102004051B (en) | 2010-10-28 | 2010-10-28 | Method for preparing standard formaldehyde sample for rapid food safety detection box |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103674640A (en) * | 2013-11-28 | 2014-03-26 | 安徽信灵检验医学科技有限公司 | Formaldehyde molecule membranization buffer solution and preparation method thereof |
| CN110849681A (en) * | 2019-11-25 | 2020-02-28 | 中国林业科学研究院木材工业研究所 | 1m3Detection method for comparison test of formaldehyde release amount by climate box method |
| CN110879207A (en) * | 2019-11-25 | 2020-03-13 | 中国林业科学研究院木材工业研究所 | Detection method for dryer method formaldehyde release amount comparison test |
| CN112924394A (en) * | 2021-01-24 | 2021-06-08 | 张苗苗 | Novel adjustable food safety inspection device |
| CN115718077A (en) * | 2022-12-19 | 2023-02-28 | 佳诺威集团股份有限公司 | Method for detecting formaldehyde emission of fiberboard |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4511658A (en) * | 1983-02-28 | 1985-04-16 | Kansas State University Research Foundation | Colorimetric detector for formaldehyde vapor |
| CN101482511A (en) * | 2008-01-09 | 2009-07-15 | 温州市农业科学研究院 | Fast detection reagent for detecting methanal in food, and its method and reagent kit |
| CN101614673A (en) * | 2009-07-21 | 2009-12-30 | 北京智云达科技有限公司 | Test paper of nitrite and preparation method thereof in a kind of fast detecting food |
-
2010
- 2010-10-28 CN CN201010522955.5A patent/CN102004051B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4511658A (en) * | 1983-02-28 | 1985-04-16 | Kansas State University Research Foundation | Colorimetric detector for formaldehyde vapor |
| CN101482511A (en) * | 2008-01-09 | 2009-07-15 | 温州市农业科学研究院 | Fast detection reagent for detecting methanal in food, and its method and reagent kit |
| CN101614673A (en) * | 2009-07-21 | 2009-12-30 | 北京智云达科技有限公司 | Test paper of nitrite and preparation method thereof in a kind of fast detecting food |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103674640A (en) * | 2013-11-28 | 2014-03-26 | 安徽信灵检验医学科技有限公司 | Formaldehyde molecule membranization buffer solution and preparation method thereof |
| CN110849681A (en) * | 2019-11-25 | 2020-02-28 | 中国林业科学研究院木材工业研究所 | 1m3Detection method for comparison test of formaldehyde release amount by climate box method |
| CN110879207A (en) * | 2019-11-25 | 2020-03-13 | 中国林业科学研究院木材工业研究所 | Detection method for dryer method formaldehyde release amount comparison test |
| CN110879207B (en) * | 2019-11-25 | 2020-12-11 | 中国林业科学研究院木材工业研究所 | Detection method for dryer method formaldehyde release amount comparison test |
| CN112924394A (en) * | 2021-01-24 | 2021-06-08 | 张苗苗 | Novel adjustable food safety inspection device |
| CN112924394B (en) * | 2021-01-24 | 2022-10-25 | 张苗苗 | Adjustable food safety inspection device |
| CN115718077A (en) * | 2022-12-19 | 2023-02-28 | 佳诺威集团股份有限公司 | Method for detecting formaldehyde emission of fiberboard |
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| Publication number | Publication date |
|---|---|
| CN102004051B (en) | 2014-04-16 |
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