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A kind of calibration method of online total chromium analyzer

A calibration method and analyzer technology, which is applied in the direction of color/spectral characteristic measurement, etc., can solve the problems that no similar instrument research has been carried out, and there is no online total chromium analyzer verification procedure or calibration specification, etc., to achieve the effect of correcting inherent errors

Active Publication Date: 2021-05-18
厦门市计量检定测试院 +1
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Problems solved by technology

[0006] At present, none of the measurement institutions has carried out research on similar instruments, and there are no verification procedures or calibration specifications for online total chromium analyzers at home and abroad.
At the same time, the existing automatic calibration device of the analyzer itself has certain inherent errors, but currently there is no calibration device for the online total chromium analyzer and a correction plan for its inherent errors

Method used

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  • A kind of calibration method of online total chromium analyzer
  • A kind of calibration method of online total chromium analyzer
  • A kind of calibration method of online total chromium analyzer

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Embodiment 1

[0044] Please refer to figure 1 , Embodiment 1 of the present invention is:

[0045] The calibration method of the on-line total chromium analyzer of this embodiment, the calibration method is calibrated based on the calibration device, and the calibration device includes the on-line total chromium analyzer 1, a host computer, a first control module, a second control module, a third Control module, circuit control unit, solution mixing device 2, first syringe pump 3, second syringe pump 4, peristaltic pump 5 and electromagnetic stirrer 6; the injection inlet of the first syringe pump 3 is connected to the pipeline of standard mother solution bottle 31 The injection inlet of the second syringe pump 4 is communicated with the diluent bottle 41 pipeline, and the injection outlets of the first syringe pump 3 and the second syringe pump 4 are respectively communicated with the liquid inlet pipeline of the solution mixing device 2 A liquid outlet of the solution mixing device 2 is ...

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Abstract

The invention relates to a calibration method for an online total chromium analyzer, the calibration method comprising the following steps: (1) preparing for the connection of the calibration device; (2) obtaining the amount of the standard solution mother liquor and the diluent (3) the second control module controls the second syringe pump to draw the diluent from the diluent bottle and inject it into the solution mixing device, and the first control module controls the first syringe pump to inject the standard solution mother solution into the solution mixing device; the circuit control unit controls Stir with an electromagnetic stirrer; (4) The computer sends sampling instructions to the detected online total chromium analyzer, and the online total chromium analyzer uploads the analysis information of water quality to the host computer; (5) The host computer analyzes the online total chromium analyzer detected and automatically calibrated. The calibration method of the online total chromium analyzer of the present invention can realize targeted automatic calibration and correction of inherent errors of the online total chromium analyzer.

Description

technical field [0001] The invention relates to a calibration method, in particular to a calibration method for an online total chromium analyzer. Background technique [0002] Chromium in wastewater is mainly trivalent chromium (Cr 3+ ) and hexavalent chromium (CrO 4 2- ,Cr 2 o 7 2- ) exists in two forms, and total chromium refers to the sum of all forms of chromium present. It is an important indicator for evaluating the relative content of organic substances in water bodies. It is mainly used for environmental monitoring in the fields of petroleum, chemical industry, and electroplating. [0003] The total chromium water quality automatic monitor can be roughly divided into two categories according to the technical principle, one is spectrophotometric, and the other is electrochemical principle. Among them, the principle of spectrophotometry is: in an acidic solution medium, under a certain temperature and pressure, chromium in different valence states and forms in ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/31
CPCG01N21/31
Inventor 曾咏威蒋淑恋郑鹏汪水吉崔建平郑丹烨纪金龙刘萍萍康品春董旋谢加生谢汉斌
Owner 厦门市计量检定测试院
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