CN108318321A - The measurement of lead analyzes pre-treating method in a kind of white wine - Google Patents
The measurement of lead analyzes pre-treating method in a kind of white wine Download PDFInfo
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- CN108318321A CN108318321A CN201810017416.2A CN201810017416A CN108318321A CN 108318321 A CN108318321 A CN 108318321A CN 201810017416 A CN201810017416 A CN 201810017416A CN 108318321 A CN108318321 A CN 108318321A
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- Prior art keywords
- white wine
- lead
- treating method
- measurement
- added
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/44—Sample treatment involving radiation, e.g. heat
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
The invention discloses a kind of measurement of lead in white wine to analyze pre-treating method, is the pre-treating method for continuing operation using concentrated nitric acid is added after the volatile organic compounds such as alcohol in heating evaporation white wine sample.The pre-treating method of the present invention avoids the phenomenon that experiment reaction can not acutely continue in lead detection pretreatment process in white wine, and experiment can be smoothed out after improvement, and the accuracy of detection is not influenced.
Description
Technical field
The present invention relates to a kind of measurement of lead in white wine to analyze pre-treating method, belongs to detection method field.
Background technology
The measurement of lead content is GB 5009.12-2017 according to national standards in white wine at present《National food safety standard
The measurement of Pb in food》In pre-treating method, be directly added into concentrated nitric acid in wine sample, vigorous reaction occurs for the two, and liquid has
Splash phenomena generates a large amount of bubbles, is overflowed from counteracting tank, while with strong yellow smog, and experiment can not continue,
Specific reacting phenomenon is shown in Fig. 1.
Invention content
The present invention is in order to avoid in place of above-mentioned the deficiencies in the prior art, it is desirable to provide in a kind of white wine before the measurement analysis of lead
Processing method so that reaction can be smoothed out, and can accurately measure lead content in white wine.
The measurement of lead analyzes pre-treating method in white wine of the present invention, is easily waved using alcohol in heating evaporation white wine sample etc.
Concentrated nitric acid is added after hair property organic matter to continue to operate, includes the following steps：
It accurately pipettes white wine sample 3.00mL to be placed in micro-wave diminishing pot, be heated at 100 DEG C on adjustable electric furnace
5mL concentrated nitric acids are then added in white wine sample evaporation to 0.5~1.5mL by 30~40min, stand 10min, during standing
If occurring reacting violent phenomenon, 1~3mL ultra-pure waters can be added, subsequently GB 5009.12-2017 are detected according to national standards
Analysis.
The concentrated nitric acid is commercial product, mass concentration 65%.
Beneficial effects of the present invention are embodied in：
The pre-treating method of the present invention, which avoids to test to react in lead detection pretreatment process in white wine, can not acutely continue
The phenomenon that progress, experiment can be smoothed out after improvement, and the accuracy of detection is not influenced.
Description of the drawings
Fig. 1 is GB 5009.12-2017 according to national standards《The measurement of national food safety standard Pb in food》In
Pre-treating method is directly added into the reaction photo (3mL wine sample+5mL concentrated nitric acids) of concentrated nitric acid in wine sample.
Fig. 2 is the reaction photo (0.5mL wine sample+5mL concentrated nitric acids) of pre-treating method of the present invention.
Fig. 3 be using mass concentration as abscissa, absorbance value be ordinate make standard curve.
Specific implementation mode
1, it accurately pipettes white wine sample 3.00mL to be placed in micro-wave diminishing pot, add at 100 DEG C on adjustable electric furnace
30~40min of heat, by white wine sample evaporation to 1mL.
2,5mL concentrated nitric acids are added in the white wine sample after being evaporated to step 1, stand 10min, if occurring during standing anti-
Violent phenomenon is answered, appropriate ultra-pure water can be added, is subsequently cleared up according still further to the operating procedure of micro-wave digestion in GB 5009.12-2017
Sample clears up conditioned reference appendix A.
Appendix A micro-wave digestion temperature program
3, the making of standard curve：Lead standard solution is injected in Atomic Absorption Spectrometer graphite furnace, with mass concentration
For abscissa, absorbance value is ordinate, makes standard curve (Fig. 3).
4, the measurement of lead content：Under experiment condition identical with bioassay standard solution, sample solution that step 2 is obtained
It injects in Atomic Absorption Spectrometer graphite furnace, its absorbance value is surveyed after atomization, it is relatively and quantitative with standard series, as a result see
Fig. 3.
Claims (3)
1. the measurement of lead analyzes pre-treating method in a kind of white wine, it is characterised in that：Using alcohol in heating evaporation white wine sample
Concentrated nitric acid is added after equal volatile organic compounds to continue to operate.
2. according to the method described in claim 1, it is characterized by comprising following steps：
It accurately pipettes white wine sample 3.00mL to be placed in micro-wave diminishing pot, 30~40min is heated at 100 DEG C, white wine is tried
Sample is evaporated to 0.5~1.5mL, and 5mL concentrated nitric acids are then added, and stands 10min, subsequently GB 5009.12- according to national standards
2017 are detected analysis.
3. according to the method described in claim 2, it is characterized in that：
If occurring reacting violent phenomenon during standing, 1~3mL ultra-pure waters are added.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810017416.2A CN108318321A (en) | 2018-01-09 | 2018-01-09 | The measurement of lead analyzes pre-treating method in a kind of white wine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810017416.2A CN108318321A (en) | 2018-01-09 | 2018-01-09 | The measurement of lead analyzes pre-treating method in a kind of white wine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108318321A true CN108318321A (en) | 2018-07-24 |
Family
ID=62894012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810017416.2A Pending CN108318321A (en) | 2018-01-09 | 2018-01-09 | The measurement of lead analyzes pre-treating method in a kind of white wine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108318321A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102507540A (en) * | 2011-11-10 | 2012-06-20 | 天祥（广州）技术服务有限公司 | Determination method for lead in plastic sample |
| CN106370647A (en) * | 2016-08-18 | 2017-02-01 | 安徽瑞思威尔科技有限公司 | Highly flavored type liquor base cyanide analysis pre-treatment method |
-
2018
- 2018-01-09 CN CN201810017416.2A patent/CN108318321A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102507540A (en) * | 2011-11-10 | 2012-06-20 | 天祥（广州）技术服务有限公司 | Determination method for lead in plastic sample |
| CN106370647A (en) * | 2016-08-18 | 2017-02-01 | 安徽瑞思威尔科技有限公司 | Highly flavored type liquor base cyanide analysis pre-treatment method |
Non-Patent Citations (1)
| Title |
|---|
| 中华人民共和国卫生部: "GB5009.12-2010食品安全国家标准食品中铅的测定", <中华人民共和国国家标准> * |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180724 |