A matching calibration method for glass instruments for quantitative analysis

Abstract

The invention provides a matching correction method for glass instruments for quantitative analysis. By performing absolute correction on the glass instruments, the real volume of the marked scale of the glass instruments is verified, and then according to the measurement relationship in the quantitative analysis process and the actual use of each glass instrument According to the requirements of the experiment, the certified glass instruments are selected and matched to ensure that the quantitative relationship does not change during the analysis process, and the precision and accuracy of the measurement results are guaranteed. This correction method greatly simplifies the calculation workload of the analysis results, controls the influence of the difference in the volume of the glass instrument itself on the experimental results in a very small range, and improves the precision and accuracy of the measurement results. In addition, the matching calibration method has huge economic value. As long as you master the matching calibration method, you don't need to buy expensive glass instruments, which can effectively reduce the cost of analysis work.

Description

technical field [0001] The invention belongs to the field of glass instrument correction, and relates to a method for matching correction of glass instruments for quantitative analysis, which can effectively improve the precision and accuracy of analysis results. Background technique [0002] As an important part of analytical chemistry, quantitative analysis is widely used in petrochemical, metallurgy, energy, food, medicine, clinical laboratory, environmental protection and other fields. The main task is to measure the content of each component in the sample, and the determination results are required to be accurate and reliable. In the process of quantitative analysis, it is often necessary to use glass instruments (such as volumetric flasks, pipettes, etc.) to prepare standard solutions or dilute unknown solutions. Every glass instrument has errors. If it is not corrected, it will definitely affect the precision and accuracy of the measurement results. [0003] At prese...

AI Technical Summary

Problems solved by technology

[0004] Method 1 can effectively reduce the impact of the error of the glass instrument itself on the experimental results, but the calculation process of the experimental analysis results is relatively complicated, especially for the situation where multiple glass instruments are used in one analysis experiment at the same time, it will greatly prolong the analysis time and increase the analysis work. It will increase the workload of personnel and increase the probability of incorrect analysis results due to calculation errors

Although the second method can simplify the calculation process and theoretically reduce the influence of the error of the glass instrument itself on the experimental results, it will cause chaotic markings on the glass instrument, unclear markings, increase analysts' mistakes in identifying the marking lines, and affect the appearance of the instrument.

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