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Standard solution used for electrolytic analyzer linear calibration

An electrolyte analyzer and standard solution technology, which is applied in the field of value transfer, can solve the problems of false positive test results, lack of wide applicability, and lack of accurate determination of solution concentration.

Active Publication Date: 2010-03-17
SHANGHAI INST OF MEASUREMENT & TESTING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] ①The concentration of the solution is not accurately determined, and there is no basis for traceability of the value
According to the test, the chloride ion working electrode of some models of instruments responds to Ac~, and the displayed value of chloride ion concentration increases with the increase of Ac~ concentration, resulting in false positive test results.
[0009] ③Not widely applicable

Method used

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  • Standard solution used for electrolytic analyzer linear calibration
  • Standard solution used for electrolytic analyzer linear calibration
  • Standard solution used for electrolytic analyzer linear calibration

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] The standard solution for linearity verification of electrolyte analyzer consists of 5 groups of solutions:

[0073] 1) The first group of solutions weighed 3.38968g of sodium chloride standard substance, 0.14910g of potassium chloride standard substance, and 2.22570g of sodium carbonate standard substance in a beaker with an electronic balance of 1 / 100,000. Dissolved and transferred to a 1L volumetric flask. Weigh 6.3000g of 3-morpholinepropanesulfonic acid into a beaker, fully dissolve with ultrapure water, transfer to the same volumetric flask, blend evenly with ultrapure water and dilute to 1L.

[0074] 2) The second group of solutions weighed 5.02608g of sodium chloride standard substance, 0.29820g of potassium chloride standard substance, and 2.33169g of sodium carbonate standard substance in a beaker using an electronic balance of one-hundredth of a million. Dissolved and transferred to a 1L volumetric flask. Weigh 6.5000g of 3-morpholinepropanesulfonic acid in...

Embodiment 2

[0082] The standard solution for linearity verification of electrolyte analyzer consists of 5 groups of solutions:

[0083] 1) The first group of solutions weighed 3.38968g of sodium chloride standard substance, 0.14910g of potassium chloride standard substance, and 2.22570g of sodium carbonate standard substance in a beaker with an electronic balance of 1 / 100,000. Dissolved and transferred to a 1L volumetric flask. Weigh 6.3000g of 3-morpholinepropanesulfonic acid into a beaker, fully dissolve with ultrapure water, transfer to the same volumetric flask, blend evenly with ultrapure water and dilute to 1L.

[0084] 2) The second group of solutions weighed 4.47085g of sodium chloride standard substance, 0.26093g of potassium chloride standard substance, and 2.30520g of sodium carbonate standard substance in a beaker using an electronic balance of one-hundredth of a million. Dissolved and transferred to a 1L volumetric flask. Weigh 6.5000g of 3-morpholinepropanesulfonic acid in...

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Abstract

The invention provides a standard solution used for electrolytic analyzer linear calibration, which is composed of five groups of different-concentration solutions containing potassium ion, sodion and chloridion. The concentration range of the three ions in the standard solution is respectively as follows: 2-8mmol / L of K, 100-180mmol / L of Na, 60-140mmol / L of Cl, and the pH range of the solutions is 7.3-7.5. The invention also discloses the preparing method of the standard solution; the invention provides a widely-used standard solution used for electrolytic analyzer linear calibration and provides guarantee for accurately evaluating instrument performance index.

Description

technical field [0001] The invention relates to the field of verification of electrolyte analyzers used in clinical testing and the field of value transfer in metering tests, in particular to a standard solution for linearity verification of electrolyte analyzers. Background technique [0002] In disease diagnosis, doctors often need to measure the electrolyte concentration of patient's blood and other body fluids, and the obtained data are used as the basis for judging the disease. Among them, flame photometry is the reference method for the detection of sodium and potassium in serum recommended by the International Federation of Clinical Chemistry (IFCC). However, the operation of the flame photometer is complicated, pollutes the air, takes a long time to analyze, and can only measure the concentration of a certain ion in the body electrolyte each time. Therefore, this method has been gradually replaced by electrolyte analyzers. [0003] At present, electrolyte analyzers...

Claims

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Application Information

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IPC IPC(8): G01N27/26G01N27/28
Inventor 丁敏陈静文龚飞雁
Owner SHANGHAI INST OF MEASUREMENT & TESTING TECH
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