CN104198467A - Test method for cleaning effect of sample containing cup - Google Patents
Test method for cleaning effect of sample containing cup Download PDFInfo
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- CN104198467A CN104198467A CN201410472900.6A CN201410472900A CN104198467A CN 104198467 A CN104198467 A CN 104198467A CN 201410472900 A CN201410472900 A CN 201410472900A CN 104198467 A CN104198467 A CN 104198467A
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- sample cup
- tested
- dress sample
- sample containing
- containing cup
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Abstract
The invention discloses a test method for the cleaning effect of a sample containing cup. The test method is characterized by comprising the following steps: adding high purity water in a sample containing cup to be tested fully, then standing for 0.5-1h so that residual Na+ ions in the sample containing cup are dissolved in the high purity water to form a solution, and determining the content of the Na+ ions of the solution in the cup containing cup to be tested through a second-order differential flame sodium spectrum trace amount sodium analysis system; if the content of the Na+ ions is smaller than or equal to 0.45 micrograms per liter, the sample containing cup to be tested has already been cleaned up, and if the content of the Na+ ions is greater than 0.45 micrograms per liter, the sample containing cup to be tested is not cleaned up, so that recleaning is required. The test method is simple in operation, and is time-saving and cost-saving.
Description
Technical field
The present invention relates to a kind of dress sample cup cleaning performance method of inspection, is exactly a kind of by second-order differential flame sodium spectrum trace amounts of sodium analytic system, the method that during chromatography of ions negative ion is measured, automatic sampler dress sample cup cleaning performance is tested.
Background technology
In firepower plant heating system, anion-content is the important evidence of supervision steam quality, discriminating Steam Condenser Leak, gyp corrosion.Water-steam system contains the integrality that μ g/L rank negative ion is just enough to destroy oxidation on metal surface thing diaphragm, therefore negative ion in steam is vouched very necessary.At present in therrmodynamic system steam negative ion to detect generally acknowledged method be the chromatography of ions.Because laboratory therrmodynamic system steam sample submitted sample exists the shelf-life short, sample presentation such as concentrates at the feature, and in order to increase work efficiency, laboratory is introduced automatic sampler and coordinated chromatography of ions to use.In therrmodynamic system steam, anion-content is generally trace rank, and the clean level of automatic sampler dress sample cup has a great impact experimental result.
In firepower therrmodynamic system, negative ion is measured and is mainly adopted DL/T954-2005 < < fuel-burning power plant water-steam test method Trace Fluoride ion, acetate ion, formic acid with ion, chlorion, nitrous acid, to follow the mensuration > > of ion, nitrate ion, phosphate anion and sulfate ion as test foundation.
In this standard, negative ion mark liquid adopts its corresponding sodium salt preparation, in the use procedure of dress sample cup, exists sodion to a certain degree to pollute, and the monitoring of sodion can reflect the pollution level of dress sample cup well.
Dress sample cup cleans situation detection method and mainly takes sampling monitoring at present, will after the full high purity water of the dress sample cup after cleaning, together carry out negative ion detection with sample, and the method exists following shortcoming:
1, consuming time longer.
2, sampling check can not truly reflect the cleaning performance of each dress sample cup.
3, a large amount of detection needs to consume ion chromatogram eluates, and chromatographic column, rejector, guard column etc. are consumed, and shortened chromatography of ions serviceable life.
If 4, anion-content is higher in test, can not determine that negative ion derives from dress sample cup or water cap, is unfavorable for pollutant sources analysis.
5, dress sample cup confirms to clean the possibility that has secondary pollution in use procedure.Dress sample cup is confirmed to clean and water cap need to be extracted and again filled sample, and in the process of extracting at water cap, contaminated possibility is larger.
Summary of the invention
The present invention is directed to the existing defect of existing method, aim to provide a kind of new dress sample cup cleaning performance method of inspection, to can reduced inspection process, improve the accuracy of check simultaneously.
It is to carry out as follows that the present invention fills the sample cup cleaning performance method of inspection: in dress sample cup to be tested, fill it up with high purity water, then standing 0.5～1h makes residual Na in dress sample cup to be tested
+ion is dissolved in high purity water and forms lysate, measures the Na of lysate in dress sample cup to be tested by second-order differential flame sodium spectrum trace amounts of sodium analytic system
+ion concentration; If Na
+ion concentration≤0.45 μ g/L, dress sample cup to be tested cleans up, if Na
+ion concentration ﹥ 0.45 μ g/L, dress sample cup to be tested does not clean up, and need again clean.
In chromatography of ions trace anion detects, under same test condition, chlorion is comparatively responsive to test reaction, shows as that chlorion peak height is the highest, peak area is large.Chromatography of ions to the test of chlorion in, the minimum chloride ion content that smallest peaks area (0.001) is corresponding, take this, can to calculate corresponding with it minimum sodium ions content be 0.45 μ g/L.When the sodium ions content of second-order differential flame sodium spectrum trace amounts of sodium analytic system test is less than minimum sodion calculated value, fill sample cup and clean up, otherwise dress sample cup needs further cleaning.
Compared with the prior art, beneficial effect of the present invention is embodied in:
1, it is simple to operate that the present invention fills the sample cup cleaning performance method of inspection, and the time of testing a dress sample cup is only 36 seconds, has saved the time, has improved the efficiency of check; And the accuracy of assay is high, to detect determined clean dress sample cup by the inventive method, carry out chromatography of ions test, result does not all detect anion-content, has proved the accuracy of the inventive method.
2, by the inventive method, can accomplish each dress sample cup cleaning performance to detect, compare with sampling Detection, can react more truly the cleaning performance of dress sample cup;
3, method of the present invention has reduced the loss of the relevant easily-consumed products of chromatography of ions, has saved cost;
4,, by method of the present invention, in the situation that dress sample cup exists pollution, more easily determine that pollution source are dress sample cup, have avoided other sources as the impact of water cap.
5, use method of the present invention to the check of dress sample cup cleaning performance, avoided the secondary pollution to dress sample cup.
Embodiment
The present embodiment is introduced the dress sample cup cleaning performance method of inspection in detail, and concrete steps are:
In dress sample cup to be tested, fill it up with high purity water, then standing 0.5～1h makes residual Na in dress sample cup to be tested
+ion is dissolved in and in high purity water, forms lysate;
When dress sample cup to be tested is standing, start second-order differential flame sodium spectrum trace amounts of sodium analytic system, draw Na
+standard typical curve, it demarcates concentration range 0.0 μ g/L～10.0 μ g/L.
By second-order differential flame sodium spectrum trace amounts of sodium analytic system, measure the Na of lysate in dress sample cup to be tested
+ion concentration; If Na
+ion concentration≤0.45 μ g/L, dress sample cup to be tested cleans up, if Na
+ion concentration ﹥ 0.45 μ g/L, dress sample cup to be tested does not clean up, and need again clean.
Claims (1)
1. a dress sample cup cleaning performance method of inspection, is characterized in that carrying out as follows: in dress sample cup to be tested, fill it up with high purity water, then standing 0.5～1h makes residual Na in dress sample cup to be tested
+ion is dissolved in high purity water and forms lysate, measures the Na of lysate in dress sample cup to be tested by second-order differential flame sodium spectrum trace amounts of sodium analytic system
+ion concentration; If Na
+ion concentration≤0.45 μ g/L, dress sample cup to be tested cleans up, if Na
+ion concentration ﹥ 0.45 μ g/L, dress sample cup to be tested does not clean up, and need again clean.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410472900.6A CN104198467A (en) | 2014-09-16 | 2014-09-16 | Test method for cleaning effect of sample containing cup |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410472900.6A CN104198467A (en) | 2014-09-16 | 2014-09-16 | Test method for cleaning effect of sample containing cup |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104198467A true CN104198467A (en) | 2014-12-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410472900.6A Pending CN104198467A (en) | 2014-09-16 | 2014-09-16 | Test method for cleaning effect of sample containing cup |
Country Status (1)
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| CN (1) | CN104198467A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018000284A1 (en) * | 2016-06-29 | 2018-01-04 | 深圳市爱诺实业有限公司 | Online monitor for high-purity water trace sodium, online monitoring method and device therefor |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2694265Y (en) * | 2003-03-14 | 2005-04-20 | 深圳市爱诺实业有限公司 | Second order differential flame emission spectrum trace quantity sodium intellect analyzer |
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2014
- 2014-09-16 CN CN201410472900.6A patent/CN104198467A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2694265Y (en) * | 2003-03-14 | 2005-04-20 | 深圳市爱诺实业有限公司 | Second order differential flame emission spectrum trace quantity sodium intellect analyzer |
Non-Patent Citations (3)
| Title |
|---|
| 中华人民共和国电力行业标准、中华人民共和国国家发展和改革委员会: "《DL/T 954-2005 火力发电厂水汽试验方法痕量痕量氟离子、乙酸根离子、甲酸根离子、氯离子、亚硝酸根离子、硝酸根离子、磷酸根离子和硫酸根离子的测定—离子色谱法》", 1 June 2005 * |
| 周立娟: "二阶微分火焰光谱痕量钠智能分析仪在电厂水汽化学监督中的应用", 《第四届火电行业化学(环保)专业技术交流会论文集》 * |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018000284A1 (en) * | 2016-06-29 | 2018-01-04 | 深圳市爱诺实业有限公司 | Online monitor for high-purity water trace sodium, online monitoring method and device therefor |
| CN107636448A (en) * | 2016-06-29 | 2018-01-26 | 深圳市爱诺实业有限公司 | High purity water trace amounts of sodium on-line computing model and its on-line monitoring method and device |
| US10788474B2 (en) | 2016-06-29 | 2020-09-29 | Shenzhen Ener-Chemistry Industrial Co., Ltd. | Online monitor for trace sodium in high-purity water, and online monitoring method and device thereof |
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Application publication date: 20141210 |