CN108680674A - 5- ethylidene -2- norbornene specific transfer quantity measuring methods in food contact material - Google Patents
5- ethylidene -2- norbornene specific transfer quantity measuring methods in food contact material Download PDFInfo
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Abstract
Present invention is disclosed a kind of 5 ethylidene in food contact material, 2 norbornene specific transfer quantity measuring methods, including step：Sampling；Pre-process and detect the specific transfer amount of 5 ethylidene, 2 norbornene in object after pre-processing；Wherein, pre-treatment step includes：Sample is mixed to form mixed liquor with the simulated solution for being preheated to the first assigned temperature and is sealed；By the mixed liquor after sealing, constant temperature stands specified time under the first assigned temperature.5 ethylidene, 2 norbornene specific transfer quantity measuring method in the food contact material of the present invention, the detection limit of this method is low, is far below requirements of the national standard (0.05mg/kg), it can accurately be detected, easy to operate, device therefor is easily obtained, it is of low cost, great generalization.
Description
Technical field
The present invention relates to detection field, it is related specifically to 5- ethylidene -2- norbornene in a kind of food contact material
Specific transfer quantity measuring method.
Background technology
In recent years, with the continuous improvement of national food-safe problem concern, the safety of packaging material for food also obtains
Extensive concern is arrived.Food contact material and product may influence smell, the taste of food during being contacted with food
Road and color are more likely to that a certain amount of toxic chemical composition such as heavy metal, toxic additive can be released, these chemistry at
Branch moves in food and is taken in by human body, endangers human health.Our countries also quite pay attention to the peace of packaging material for food
Quan Xing, update in 2016 issued a whole set of very comprehensive relevant regulation and testing standard, the food packaging material of specification
The safe mass of material requires and test is guided.Plastic products are most commonly seen since being the 1960s and are widely used in food
One of material of packaging, but the phase due to being added in the monomer residue and forming process in the building-up process of high molecular material
To low molecule auxiliary agent, undesirable plastic material can remain or migrate out poisonous and harmful monomer to change the certain of food
Characteristic damages human body.This technology fills up national standard method blank,《GB 4806.6-2016 food securities country
Standard》In, food contact in plastic resin to PP birds of the same feather flock together condensation material for packaging material for food requirement in point out, the material
5- ethylidene -2- norbornene the amount of migration limit values be 0.05mg/kg, country and relevant industries do not set up still to the substance detect
Official method.
5- ethylidene -2- norbornene lists in the detection plasthetics using infrared and magnetic nuclear resonance method only related at present
The method of body content, but method is not mature enough and detecting instrument is expensive, the method for content also in gas chromatography test plastic cement,
But this method can not test the amount of migration.
Invention content
The main object of the present invention is to provide 5- ethylidene -2- norbornene specific transfer amounts in a kind of food contact material
Detection method, it is at least one proposed in background technology to solve the problems, such as.
5- ethylidene -2- norbornene specific transfer quantity measuring methods in a kind of food contact material of present invention proposition, packet
Include step：Sampling；Pre-process and detect the specific transfer amount of 5- ethylidene -2- norbornene in object after pre-processing；
Wherein, pre-treatment step includes：
Sample is mixed to form mixed liquor with the simulated solution for being preheated to the first assigned temperature and is sealed；
By the mixed liquor after sealing, constant temperature stands specified time under the first assigned temperature.
Further, 5- ethylidene -2- norbornene specific transfer quantity measuring methods in above-mentioned food contact material, on
After stating the step of constant temperature stands specified time under the first assigned temperature by the mixed liquor after sealing, further include：
Above-mentioned mixed liquor is cooled to the second assigned temperature.
Further, 5- ethylidene -2- norbornene specific transfer quantity measuring methods in above-mentioned food contact material, on
Stating sampling procedure includes：
It is sampled after sample is cut to specified size.
Further, 5- ethylidene -2- norbornene specific transfer quantity measuring methods in above-mentioned food contact material, on
It states after detection pretreatment in object the step of the specific transfer amount of 5- ethylidene -2- norbornene, including：
Use the specific transfer amount of 5- ethylidene -2- norbornene in object after the detection pretreatment of GC-MS analyzers.
Further, 5- ethylidene -2- norbornene specific transfer quantity measuring methods in above-mentioned food contact material, on
The head space condition for stating GC-MS analyzers is：Equilibration time is 20-45min；Furnace temperature is 50-100 DEG C；Pressing time is 1-5min；
Sample introduction needle temperature is 90-130 DEG C；Transmission line temperature is 90-140 DEG C.
Further, 5- ethylidene -2- norbornene specific transfer quantity measuring methods in above-mentioned food contact material, on
The heating curve for stating GC-MS analyzers, is set as：
Chromatogram column temperature is maintained to keep 2min at 60 DEG C；
Chromatogram column temperature is promoted to 150 DEG C with the heating rate of 10 DEG C/min；
Chromatogram column temperature is promoted to 220 DEG C with the heating rate of 30 DEG C/min.
Further, 5- ethylidene -2- norbornene specific transfer quantity measuring methods in above-mentioned food contact material, on
It is 180 DEG C to state GC-MS analyzer injector temperatures.
Further, 5- ethylidene -2- norbornene specific transfer quantity measuring methods in above-mentioned food contact material, on
It includes any one in 10%-98% ethyl alcohol, acetic acid and isooctane to state simulated solution.
Further, 5- ethylidene -2- norbornene specific transfer quantity measuring methods in above-mentioned food contact material, on
The ratio for stating the area of sample and the volume of above-mentioned simulated solution includes 3cm2:4-6mL.
Further, 5- ethylidene -2- norbornene specific transfer quantity measuring methods in above-mentioned food contact material, on
It includes 30 DEG C -90 DEG C to state the first assigned temperature.
5- ethylidene -2- norbornene specific transfer quantity measuring methods in the food contact material of the present invention, this method
Detection limit is low, is far below requirements of the national standard (0.05mg/kg), can accurately be detected, easy to operate, device therefor is easy to
It obtains, of low cost, great generalization.
Description of the drawings
Fig. 1 detects for 5- ethylidene -2- norbornene specific transfer amounts in the food contact material of one embodiment of the invention
The flow diagram of method；
Fig. 2 detects for 5- ethylidene -2- norbornene specific transfer amounts in the food contact material of one embodiment of the invention
The flow diagram of method；
Fig. 3 is 5- ethylidene -2- norbornene specific transfer amounts in the food contact material of a specific embodiment of the invention
The linearly dependent coefficient schematic diagram of detection method；
Fig. 4 is 5- ethylidene -2- norbornene specific transfer amounts in the food contact material of a specific embodiment of the invention
The object detection limit schematic diagram of detection method；
Fig. 5 is 5- ethylidene -2- norbornene specific transfer amounts in the food contact material of a specific embodiment of the invention
The object gas-chromatography schematic diagram of detection method.
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiment is only a part of the embodiment of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art obtained without creative efforts it is all its
His embodiment, shall fall within the protection scope of the present invention.
In addition, the description for being related to " first ", " second " etc. in the present invention is used for description purposes only, and should not be understood as referring to
Show or imply its relative importance or implicitly indicates the quantity of indicated technical characteristic." first ", " are defined as a result,
Two " feature can explicitly or implicitly include at least one of the features.In addition, the technical solution of each embodiment can phase
It mutually combines, but must can be implemented as basis with those of ordinary skill in the art, when the combination of technical solution occurs mutually
Contradiction or cannot achieve when, will be understood that the combination of this technical solution is not present, also not the present invention claims protection domain it
It is interior.
Referring to Fig.1, in embodiments of the present invention, ice drops in 5- ethylidene -2- in a kind of food contact material of present invention offer
Piece alkene specific transfer quantity measuring method, including：S1, sampling；The Asias 5- second in object after S2, pretreatment and S3, detection pretreatment
The specific transfer amount of base -2- norbornene,
Wherein, pre-treatment step includes：S21, sample is mixed to form with the simulated solution for being preheated to the first assigned temperature it is mixed
It closes liquid and seals；S22, by the mixed liquor after sealing, constant temperature stands specified time under the first assigned temperature.
Such as above-mentioned steps S1, the important step that a small amount of target substance is detected generally is extracted in sampling from object
One of, have under the premise of not influencing the main character of object, obtains object and tested to obtain each item data
One of effective way, measured object extracted amount need to carry out 3-5 test enough, to the sampling regioselective process of measured object when sampling
Randomness is required, subjectivity selection can not be adulterated in the selection process, in embodiments of the present invention, Sampling Area is generally
40-80cm2, preferably 40cm2、60cm2Or 80cm2。
Such as above-mentioned steps S2, pretreatment, generally to object the purpose of the removal of impurities before carrying out effective process purifies
The step of, pre-treatment step further includes the purpose of changing physical property, in embodiments of the present invention, in advance in certain special experiments
Processing step is preferably above-mentioned steps S21-S23.
Such as above-mentioned steps S3, the specific transfer amount of 5- ethylidene -2- norbornene in object after pre-processing is detected, generally
To carry out specified experiment or detecting step to carrying out the object after above-mentioned steps S1-S2, it is general obtain immediate data or
Connect data, wherein immediate data is the data that the data are directly detection target value or result；Indirect data is that need to pass through
The corresponding data for calculating, just obtaining target value or result after replacement or comparison, testing result is generally according to detection device, ring
There are deviations for the deviation in border, pre-treatment step and supplement, wherein pre-process with supplement difference after formulating examination criteria,
Its caused error span can be effectively avoided accordingly.
Such as above-mentioned steps S21, sample is mixed to form mixed liquor with the simulated solution for being preheated to the first assigned temperature and is sealed,
During stating step S21 on the implementation, wherein above-mentioned first assigned temperature is generally 30 DEG C -90 DEG C, in the embodiment of the present invention
In, the mixability of preferably 30 DEG C, 70 DEG C or 90 DEG C, above-mentioned sample and above-mentioned simulated solution reaches above-mentioned sample and above-mentioned simulation
Liquid is in same reactor and contacts with each other above, and after above-mentioned sample is mixed with extractant, processing is sealed with container,
Since temperature is higher in container and simulated solution is generally the lower volatile substances of boiling point, such as：Ethyl alcohol, acetic acid etc., therefore, generally
It is sealed using the material with elasticity or ductility, it is generally fresh-keeping to prevent container internal pressure is excessive from causing to burst
Film or elastic plastic film.
Such as above-mentioned steps S22, by the mixed liquor after sealing, constant temperature stands specified time under the first assigned temperature, is implementing
During above-mentioned steps S22, temperature need to be always held at above-mentioned in the first assigned temperature in reaction unit, wherein above-mentioned
First assigned temperature is generally 30 DEG C -90 DEG C, and in embodiments of the present invention, preferably 30 DEG C, 70 DEG C or 90 DEG C are above-mentioned to stand
Journey continued specified time is generally in 20-50min, preferably 20min, 30min or 50min.
With reference to Fig. 2, in the present embodiment, 5- ethylidene -2- norbornene specific transfers in above-mentioned food contact material
Quantity measuring method, after the step of constant temperature stands specified time to the above-mentioned mixed liquor by after sealing under the first assigned temperature,
Further include：S23, above-mentioned mixed liquor is cooled to the second assigned temperature.
Such as above-mentioned steps S23, above-mentioned mixed liquor is cooled to the second assigned temperature, states the process of step S23 on the implementation
In, the mixed liquor obtained by above-mentioned steps S21 is rocked and continues specified time, wherein is above-mentioned specified generally in 20-
50min, preferably 20min, 30min or 50min need to keep temperature one in above-mentioned reaction unit when carrying out above-mentioned steps S24
Directly it is in above-mentioned second assigned temperature, wherein above-mentioned second assigned temperature is generally 20 DEG C -50 DEG C, in embodiments of the present invention,
Preferably 20 DEG C, 25 DEG C, 27 DEG C or 50 DEG C.
With reference to Fig. 2, in the present embodiment, 5- ethylidene -2- norbornene specific transfers in above-mentioned food contact material
Quantity measuring method, above-mentioned sampling procedure include：S11, it is sampled after cutting sample to specified size.
Such as above-mentioned steps S11, sampled after sample is cut to specified size, generally 40-80cm2, preferably 40cm2、
60cm2Or 80cm2。
In the present embodiment, 5- ethylidene -2- norbornene specific transfer amounts detection side in above-mentioned food contact material
Method, after above-mentioned detection pretreatment in object 5- ethylidene -2- norbornene the used GC-MS (gas of specific transfer amount step
Phase chromatography-mass spectroscopy) analyzer detection, it is preferable to use GC135 in the present embodiment, wherein above-mentioned GC-MS analyses in detection process
The use condition of instrument is preferably in embodiments of the present invention：
Head space condition:Equilibration time：30min；
Furnace temperature：80℃；
Pressing time：2min；
Sample introduction needle temperature：110℃；
Transmission line temperature：120 degree；
Pillar：DB-VRX；
Injector temperature：180℃；
Shunt mode：Without shunting；
Temperature program(me)：Initially：60 DEG C of maintenance 2min；
Temperature rise period 1：Heating rate：10 DEG C/min, it is warming up to 150 DEG C；
Temperature rise period 2：Heating rate：30 DEG C/min, it is warming up to 220 DEG C.
In the present embodiment, 5- ethylidene -2- norbornene specific transfer amounts detection side in above-mentioned food contact material
Method, above-mentioned simulated solution are any one in 10%-98% ethyl alcohol, acetic acid and isooctane, wherein excellent in inventive embodiments
Choosing uses 10% ethyl alcohol, 50% ethyl alcohol, 95% ethyl alcohol, 4% acetic acid or isooctane.
In the present embodiment, 5- ethylidene -2- norbornene specific transfer amounts detection side in above-mentioned food contact material
The volume ratio of method, above-mentioned sample area and simulated solution is 3cm2:4-6mL, wherein in inventive embodiments, sample area and mould
The preferred 3cm of volume ratio of quasi- liquid2:4mL、3cm2:5mL or 3cm2:6mL。
In the present embodiment, 5- ethylidene -2- norbornene specific transfer amounts detection side in above-mentioned food contact material
Method, above-mentioned first assigned temperature include 30 DEG C -90 DEG C, in embodiments of the present invention, preferably 30 DEG C, 70 DEG C or 90 DEG C.
With reference to Fig. 3-5, in one embodiment, the standard solution of the 1000mg/L of 100uL is pipetted respectively to 5 10mL
In volumetric flask, simulated solution constant volume is used in combination, in this embodiment, simulated solution during simulated solution uses 5 altogether, and respectively 10% second
Alcohol, 50% ethyl alcohol, 95% ethyl alcohol, 4% acetic acid or isooctane, each volumetric flask carry out constant volume with different simulated solutions, after constant volume
It is filtered, target concentration theoretical value is 10mg/L in solution after the above mark-on.Finally go out various kinds according to test result calculations
The recovery of standard addition and minimum detectability of 5- ethylidene -2- norbornene, testing result are as follows in product:
The rate of recovery for the 5- ethylidene -2- norbornene that table 1 is measured using the method for the present invention,
Instrument test condition：
Head space condition:Equilibration time：30min；
Furnace temperature：80℃；
Pressing time：2min；
Sample introduction needle temperature：110℃；
Transmission line temperature：120 degree；
Pillar：DB-VRX；
Injector temperature：180℃；
Shunt mode：Without shunting；
Temperature program(me)：Initially：60 DEG C of maintenance 2min；
Temperature rise period 1：Heating rate：10 DEG C/min, it is warming up to 150 DEG C；
Important technological parameters：The range of linearity：The range of linearity is (mg/L) 0,1,2,5,10,20.Linearly dependent coefficient is shown in figure
3。
Wherein, the test rate of recovery is as shown in Table 1：
| Simulated solution | 10% ethyl alcohol | 50% ethyl alcohol | 95% ethyl alcohol | 4% acetic acid | Isooctane |
| The rate of recovery (%) | 92 | 90 | 90 | 91 | 91 |
Table 1
Use the minimum detectability for the 5- ethylidene -2- norbornene that the method for the present invention measures：0.01mg/L.
5- ethylidene -2- norbornene specific transfer quantity measuring methods in the food contact material of the present invention, this method
Detection limit is low, is far below requirements of the national standard (0.05mg/kg), can accurately be detected, easy to operate, device therefor is easy to
It obtains, of low cost, great generalization.
The foregoing is merely the preferred embodiment of the present invention, are not intended to limit the scope of the invention, every utilization
Equivalent structure or equivalent flow shift made by description of the invention and accompanying drawing content is applied directly or indirectly in other correlations
Technical field, be included within the scope of the present invention.
Claims (10)
1. 5- ethylidene -2- norbornene specific transfer quantity measuring methods in a kind of food contact material, which is characterized in that including
Step：Sampling；Pre-process and detect the specific transfer amount of 5- ethylidene -2- norbornene in object after pre-processing；
Wherein, pre-treatment step includes：
Sample is mixed to form mixed liquor with the simulated solution for being preheated to the first assigned temperature and is sealed；
By the mixed liquor after sealing, constant temperature stands specified time under the first assigned temperature.
2. 5- ethylidene -2- norbornene specific transfer quantity measuring methods in food contact material according to claim 1,
It is characterized in that, the mixed liquor by after sealing under the first assigned temperature constant temperature stand specified time the step of after, also
Including：
The mixture is cooled to the second assigned temperatures.
3. 5- ethylidene -2- norbornene specific transfer quantity measuring methods in food contact material according to claim 1,
It is characterized in that, the sampling procedure includes：
It is sampled after sample is cut to specified size.
4. 5- ethylidene -2- norbornene specific transfer quantity measuring methods in food contact material according to claim 1,
It is characterized in that, after the detection pretreatment in object the step of the specific transfer amount of 5- ethylidene -2- norbornene, packet
It includes：
Use the specific transfer amount of 5- ethylidene -2- norbornene in object after the detection pretreatment of GC-MS analyzers.
5. 5- ethylidene -2- norbornene specific transfer quantity measuring methods in food contact material according to claim 4,
It is characterized in that, the head space condition of the GC-MS analyzers is：Equilibration time is 20-45min；Furnace temperature is 50-100 DEG C；Pressurization
Time is 1-5min；Sample introduction needle temperature is 90-130 DEG C；Transmission line temperature is 90-140 DEG C.
6. 5- ethylidene -2- norbornene specific transfer quantity measuring methods in food contact material according to claim 4,
It is characterized in that, the heating curve of the GC-MS analyzers, is set as：
Chromatogram column temperature is maintained to keep 2min at 60 DEG C；
Chromatogram column temperature is promoted to 150 DEG C with the heating rate of 10 DEG C/min；
Chromatogram column temperature is promoted to 220 DEG C with the heating rate of 30 DEG C/min.
7. 5- ethylidene -2- norbornene specific transfer quantity measuring methods in food contact material according to claim 4,
It is characterized in that, the GC-MS analyzers injector temperature is 180 DEG C.
8. 5- ethylidene -2- norbornene specific transfer quantity measuring methods in food contact material according to claim 1,
It is characterized in that, the simulated solution include acetic acid, isooctane and volume ratio be 10%-98% ethyl alcohol in any one.
9. 5- ethylidene -2- norbornene specific transfer quantity measuring methods in food contact material according to claim 1,
It is characterized in that, the ratio of the volume of the area of the sample and the simulated solution includes 3cm2:4-6mL。
10. according to 5- ethylidene -2- norbornene specific transfers in food contact material described in any one of claim 1-9
Quantity measuring method, which is characterized in that first assigned temperature includes 30 DEG C -90 DEG C.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0952179A2 (en) * | 1996-03-07 | 1999-10-27 | Cryovac, Inc. | Zeolite in packaging |
| CN1910228A (en) * | 2004-01-19 | 2007-02-07 | 帝斯曼知识产权资产管理有限公司 | Thermoplastic elastomer composition |
| JP4694474B2 (en) * | 2004-03-03 | 2011-06-08 | 三菱化学メディエンス株式会社 | Method for testing fat-soluble vitamins and / or fat-soluble food factors by saliva analysis |
| CN102879510A (en) * | 2012-09-21 | 2013-01-16 | 福建出入境检验检疫局检验检疫技术中心 | Method for detecting migration quantity of nipagin ester substances in plastic food package bag |
| CN104215732A (en) * | 2014-09-26 | 2014-12-17 | 云南中烟工业有限责任公司 | Method of taking Tenax as simulant to measure migration amount from paper and volatile and semi-volatile organic matter in paperboard by TD-GC/MS |
| CN106770805A (en) * | 2017-03-02 | 2017-05-31 | 深圳天祥质量技术服务有限公司 | The assay method of hexene migration amount in a kind of food contact plastic products |
| CN107037151A (en) * | 2017-04-13 | 2017-08-11 | 宁波出入境检验检疫局检验检疫技术中心 | A kind of assay method of transfer volume of epoxy chloropropane in food contact material |
-
2018
- 2018-05-21 CN CN201810488654.1A patent/CN108680674B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0952179A2 (en) * | 1996-03-07 | 1999-10-27 | Cryovac, Inc. | Zeolite in packaging |
| CN1910228A (en) * | 2004-01-19 | 2007-02-07 | 帝斯曼知识产权资产管理有限公司 | Thermoplastic elastomer composition |
| JP4694474B2 (en) * | 2004-03-03 | 2011-06-08 | 三菱化学メディエンス株式会社 | Method for testing fat-soluble vitamins and / or fat-soluble food factors by saliva analysis |
| CN102879510A (en) * | 2012-09-21 | 2013-01-16 | 福建出入境检验检疫局检验检疫技术中心 | Method for detecting migration quantity of nipagin ester substances in plastic food package bag |
| CN104215732A (en) * | 2014-09-26 | 2014-12-17 | 云南中烟工业有限责任公司 | Method of taking Tenax as simulant to measure migration amount from paper and volatile and semi-volatile organic matter in paperboard by TD-GC/MS |
| CN106770805A (en) * | 2017-03-02 | 2017-05-31 | 深圳天祥质量技术服务有限公司 | The assay method of hexene migration amount in a kind of food contact plastic products |
| CN107037151A (en) * | 2017-04-13 | 2017-08-11 | 宁波出入境检验检疫局检验检疫技术中心 | A kind of assay method of transfer volume of epoxy chloropropane in food contact material |
Non-Patent Citations (2)
| Title |
|---|
| SUNG-SEEN CHOI 等: "Analysis of 5-ethylidene-2-norbornene in ethylene-propylene-diene terpolymer using pyrolysis-GC/MS", 《POLYMER TESTING》 * |
| SURESH G. KULKARNI 等: "Studies on Pre-Ignition Reactions of Hydrocarbon-Based Rocket Fuels Hypergolic with Red Fuming Nitric Acid as Oxidizer", 《JOURNAL OF ENERGETIC MATERIALS》 * |
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