CN102507299A - Pretreatment method for detecting elements of polyvinyl chloride plastics - Google Patents
Pretreatment method for detecting elements of polyvinyl chloride plastics Download PDFInfo
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- CN102507299A CN102507299A CN2011103400017A CN201110340001A CN102507299A CN 102507299 A CN102507299 A CN 102507299A CN 2011103400017 A CN2011103400017 A CN 2011103400017A CN 201110340001 A CN201110340001 A CN 201110340001A CN 102507299 A CN102507299 A CN 102507299A
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- polyvinyl chloride
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- igelite
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Abstract
The invention provides a pretreatment method for detecting elements of polyvinyl chloride plastics, which includes the steps: A, cutting a polyvinyl chloride plastic sample into small pieces and grinding the small pieces into powder; B, weighing a certain amount of grinded polyvinyl chloride plastic sample powder and placing the powder into a polytetrafluoroethylene microwave digestion tank, adding an appropriate amount of concentrated nitric acid, concentrated hydrochloric acid, hydrofluoric acid and perchloric acid and standing the mixture; C, setting microwave digestion program parameters to start microwave digestion; and D, cooling the mixture to room temperature after finishing microwave digestion programs to obtain settled solution with the sample completely dissolved. By means of adding the nitric acid, the hydrochloric acid, the hydrofluoric acid and the perchloric acid during digestion, the polyvinyl chloride plastics are completely digested, so that uncontrollable loss possibly caused by some elements when the polyvinyl chloride plastic sample is incompletely digested is avoided. The operation steps of the pretreatment method are simple, digestion speed is fast, pretreatment cost is saved, the solution digested by the method is settled, and interference factors during detection are decreased.
Description
Technical field
the present invention relates to the analysis of components field of igelite, and particularly a kind of igelite carries out the pre-treating method that element detects.
Background technology
igelite is a kind of plastics that often use; It is the thermoplastics that output is maximum in the plastics, purposes is extremely wide; It is to be formed by vinyl polymerization, and by the resin that Corvic, plastifier and aging resister are formed, itself is avirulence also.But main auxiliary material such as the plastifier that is added, thermal stabilizer is toxic; Plastifier in the daily igelite; Main dibutyl terephthalate, the dioctyl phthalate etc. of using, these chemicals are all toxic, and the aging resister stearic acid lead salt of PVC also is poisonous.The thermal stabilizer that PVC uses in plastics industry mainly contains lead salt, metallic soap and organotin etc., and antimony organic, rare earth and other thermal stabilizers still are in the development phase.Owing to but heavy metals such as plumbous cadmium in the thermal stabilizer are considered to carcinogen, European Union, North America, Japan etc. have banned use of heavy metal heat stabilizer.The PVC that contains lead salt meets as packaging for foodstuff and deep-fried twisted dough sticks, fried cake, fried fish tartar souce, cold cuts based article, cake cakes; Lead molecule is diffused in the grease to be gone; So can not use polyvinyl chloride plastic pocket splendid attire food, especially can not splendid attire contain the food of oils.European Union has also done strict qualification to some heavy metals that use in plastics and the goods thereof.Thereby how to detect and control the noxious material in plastics and the goods thereof, seem particularly necessary.
During
noxious material in detecting plastic products; Usually to clear up pre-treatment to plastic sample; Digestion procedure commonly used is to add nitric acid and oxydol to put into the micro-wave digestion jar and make its dissolving; But generally all can not it be dissolved fully, thereby cause the uncontrollable loss of some element.Therefore, how fast and efficiently igelite to be cleared up and become this technical field problem demanding prompt solution.
Summary of the invention
Carry out igelite and clear up when handling in order to solve existing method, cause the problem of sample element loss easily, the present invention proposes following technical scheme:
A kind of igelite carries out the pre-treating method that element detects, and this method may further comprise the steps:
A, the igelite sample is cut into fritter, and grind and be powder;
B, take by weighing a certain amount of ground igelite sample powder, place teflon micro-wave digestion jar, add an amount of red fuming nitric acid (RFNA), concentrated hydrochloric acid, hydrofluorite and perchloric acid, leave standstill;
C, the micro-wave digestion program parameter is set, the beginning micro-wave digestion;
After
D, the micro-wave digestion EOP (end of program), be cooled to room temperature, obtain the settled solution that sample has been cleared up fully.
As a kind of preferred version of the present invention, clear up the parameter such as the table one of program among the said step C:
Table one micro-wave digestion program parameter table
| Step | Heating-up time (min) | Temperature (℃) | Constant temperature time (min) |
| 1 | 5.00 | 120 | 3.00 |
| 2 | 3.00 | 150 | 5.00 |
| 3 | 7.00 | 200 | 50.00 |
The beneficial effect that the present invention brings is:
1, adopt the method that adds nitric acid, hydrochloric acid, hydrofluorite and perchloric acid in the digestion process of the present invention, make igelite clear up fully, when having avoided processing igelite Specimen eliminating incomplete, some element possibly cause uncontrollable loss;
2, the inventive method operation steps is simple, and it is fast to clear up speed, practices thrift the pre-treatment cost;
Solution clarification after
3, the inventive method are cleared up has reduced the disturbing factor in the mensuration process.
Embodiment
Set forth in the face of preferred embodiment of the present invention down in detail
, thereby so that advantage of the present invention and characteristic can be easier to it will be appreciated by those skilled in the art that protection scope of the present invention is made more explicit defining.
A kind of igelite carries out the pre-treating method that element detects, and may further comprise the steps:
A, get an igelite sample, it is cut into fritter, and grind and be powder;
B, take by weighing the ground igelite sample powder of 0.1g, place teflon micro-wave digestion jar, add 9mL red fuming nitric acid (RFNA), 1mL concentrated hydrochloric acid, 0.4mL hydrofluorite and 0.5mL perchloric acid, left standstill 5 minutes;
C, the micro-wave digestion program parameter is set, like table one, the beginning micro-wave digestion;
Table one micro-wave digestion program parameter table
| Step | Heating-up time (min) | Temperature (℃) | Constant temperature time (min) |
| 1 | 5.00 | 120 | 3.00 |
| 2 | 3.00 | 150 | 5.00 |
| 3 | 7.00 | 200 | 50.00 |
After
D, the micro-wave digestion EOP (end of program), be cooled to room temperature, obtain the settled solution that sample has been cleared up fully.
the above; Be merely embodiment of the present invention; But protection scope of the present invention is not limited thereto; Any those of ordinary skill in the art are in the technical scope that the present invention disclosed, and variation or the replacement that can expect without creative work all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain that claims were limited.
Claims (2)
1. an igelite carries out the pre-treating method that element detects, and it is characterized in that: this method may further comprise the steps:
A, the igelite sample is cut into fritter, and grind and be powder;
B, take by weighing a certain amount of ground igelite sample powder, place teflon micro-wave digestion jar, add an amount of red fuming nitric acid (RFNA), concentrated hydrochloric acid, hydrofluorite and perchloric acid, leave standstill;
C, the micro-wave digestion program parameter is set, the beginning micro-wave digestion;
After D, the micro-wave digestion EOP (end of program), be cooled to room temperature, obtain the settled solution that sample has been cleared up fully.
2. a kind of igelite according to claim 1 carries out the pre-treating method that element detects, and it is characterized in that: parameter such as the table one of clearing up program among the said step C:
Table one micro-wave digestion program parameter table
。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103400017A CN102507299A (en) | 2011-11-02 | 2011-11-02 | Pretreatment method for detecting elements of polyvinyl chloride plastics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103400017A CN102507299A (en) | 2011-11-02 | 2011-11-02 | Pretreatment method for detecting elements of polyvinyl chloride plastics |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102507299A true CN102507299A (en) | 2012-06-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011103400017A Pending CN102507299A (en) | 2011-11-02 | 2011-11-02 | Pretreatment method for detecting elements of polyvinyl chloride plastics |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103852463A (en) * | 2014-03-26 | 2014-06-11 | 昆山洛丹伦生物科技有限公司 | Method for detecting content of eight heavy metals in plastic |
| CN105372196A (en) * | 2015-12-10 | 2016-03-02 | 深圳市众凯检测技术有限公司 | Detection method of lead content of food |
| CN110220768A (en) * | 2019-05-28 | 2019-09-10 | 泸州众康农业检测有限公司 | A kind of microwave digestion method of solid waste Determination of Metals |
| CN110806474A (en) * | 2019-11-28 | 2020-02-18 | 广州广电计量检测股份有限公司 | Qualitative and quantitative detection method for red phosphorus in plastic product |
| CN112005094A (en) * | 2018-03-07 | 2020-11-27 | 玛格丽特·安娜·莱蒂齐娅·费兰特 | Method for extracting and measuring micro-plastics in sample containing organic and inorganic matrix |
| CN113607510A (en) * | 2021-06-22 | 2021-11-05 | 广东华声电器实业有限公司 | Microwave pretreatment method of plastic material special for electronics |
| CN114354307A (en) * | 2021-12-17 | 2022-04-15 | 广西金川有色金属有限公司 | Method for dissolving copper concentrate sample |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101576497A (en) * | 2009-03-06 | 2009-11-11 | 刘征涛 | Plasma emission spectrum detection method of content of platinum, palladium and rhodium in ceramic materials |
-
2011
- 2011-11-02 CN CN2011103400017A patent/CN102507299A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101576497A (en) * | 2009-03-06 | 2009-11-11 | 刘征涛 | Plasma emission spectrum detection method of content of platinum, palladium and rhodium in ceramic materials |
Non-Patent Citations (3)
| Title |
|---|
| 邓金梅 等: "在塑料重金属测定中对微波消解前处理条件的探讨", 《广东化工》, vol. 37, no. 6, 31 December 2010 (2010-12-31) * |
| 金献忠 等: "塑料制品中铅、汞、镉、铬（VI）测定", 《理化检验-化学分册》, vol. 45, 31 December 2009 (2009-12-31) * |
| 陈玉红 等: "微波消解-电感耦合等离子体质谱（ICP-MS）法同时测定塑料中的铅、镉、汞、铬、砷", 《环境化学》, vol. 25, no. 4, 31 July 2006 (2006-07-31) * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103852463A (en) * | 2014-03-26 | 2014-06-11 | 昆山洛丹伦生物科技有限公司 | Method for detecting content of eight heavy metals in plastic |
| CN105372196A (en) * | 2015-12-10 | 2016-03-02 | 深圳市众凯检测技术有限公司 | Detection method of lead content of food |
| CN105372196B (en) * | 2015-12-10 | 2018-05-08 | 深圳市众凯检测技术有限公司 | A kind of detection method of Lead Content in Foodstuff |
| CN112005094A (en) * | 2018-03-07 | 2020-11-27 | 玛格丽特·安娜·莱蒂齐娅·费兰特 | Method for extracting and measuring micro-plastics in sample containing organic and inorganic matrix |
| CN110220768A (en) * | 2019-05-28 | 2019-09-10 | 泸州众康农业检测有限公司 | A kind of microwave digestion method of solid waste Determination of Metals |
| CN110806474A (en) * | 2019-11-28 | 2020-02-18 | 广州广电计量检测股份有限公司 | Qualitative and quantitative detection method for red phosphorus in plastic product |
| CN113607510A (en) * | 2021-06-22 | 2021-11-05 | 广东华声电器实业有限公司 | Microwave pretreatment method of plastic material special for electronics |
| CN114354307A (en) * | 2021-12-17 | 2022-04-15 | 广西金川有色金属有限公司 | Method for dissolving copper concentrate sample |
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Application publication date: 20120620 |