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Peak area calculating method for electrochemical data analysis

A technology of data analysis and calculation method, applied in the field of electrochemical detection, can solve the problems of inability to calculate peak area, inaccurate calculation, unstable peak shape of dissolution, and achieve the effect of fast and accurate concentration calculation and easy and accurate area calculation.

Inactive Publication Date: 2015-04-29
CILIN & CAS ENVIRONMENTAL TECH ANHUIINC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for calculating the peak area for electrochemical data analysis. By adjusting the parameter setting for finding the dissolution peak, it can effectively solve the problem that the dissolution peak shape is unstable due to the difference in water samples in the test, and the peak area cannot be calculated. Calculate inaccurate problems to make the calculation of metal ion concentration fast and accurate

Method used

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  • Peak area calculating method for electrochemical data analysis
  • Peak area calculating method for electrochemical data analysis
  • Peak area calculating method for electrochemical data analysis

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Embodiment 1

[0021] refer to figure 1 , step 1): electrochemical data acquisition: scan the water sample 1 by the electrochemical workstation to obtain electrochemical data, set the scanning voltage range of the electrochemical workstation to be -400mV to +500mV; the scanning voltage step range is 6mV; the data obtained by scanning can be found in figure 2 As shown, at this time, the electrochemical data is in the form of an array X save in form, array X length is 150;

[0022] Step 2): By analyzing the data of multiple scans of the sample to be treated by the electrochemical workstation, the maximum range of the metal dissolution peak is obtained, so as to ensure that the metal dissolution peak can be correctly included in each treatment. X Take out the maximum range of the metal dissolution peak in the method of intercepting from the array X The 55th data starts to be intercepted, and the interception length is 57, that is, the interception array X The 55th-112th number, saved as an...

Embodiment 2

[0032] refer to figure 1 , step 1): electrochemical data acquisition: scan the water sample 2 by the electrochemical workstation to obtain electrochemical data, set the scanning voltage range of the electrochemical workstation to be -400mV to +500mV; the scanning voltage step range is 6mV; the data obtained by scanning can be found in image 3 As shown, at this time, the electrochemical data is in the form of an array X save in form, array X length is 150;

[0033] Step 2): By analyzing the data of multiple scans of the sample to be treated by the electrochemical workstation, the maximum range of the metal dissolution peak is obtained, so as to ensure that the metal dissolution peak can be correctly included in each treatment. X Take out the maximum range of the metal dissolution peak in the method of intercepting from the array X The 55th data starts to be intercepted, and the interception length is 57, that is, the interception array X The 55th-112th number, saved as an ...

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Abstract

The invention discloses a peak area calculating method for electrochemical data analysis and relates to the technical field of chemical detection. The method comprises the following steps: collecting electrochemical data; intercepting an array X by analyzing data scanned to obtain the maximum range of a metal stripping peak and taking out the maximum range of the metal stripping peak in the array X and storing as an array Y; searching for the maximum value ymax of the array Y and an index in the array Y, subtracting 5 from the index max of the maximum value and sequentially subtracting forwardly to solve the slope k1, and acquiring the dropping peak position at the right end by setting the threshold of k2; and intercepting the index of the array Y according to yi and yj and storing as an array Z, and calculating the area S of the stripping peak corresponding to the array Z according to an integral method. Compared with the prior art, the shape of the metal stripping peak is irregular, the stripping potential is deviated from a set value in a relatively small extent, the area of the metal stripping peak is easy and accurate to calculate and the concentration of metal ions is quickly and precisely calculated.

Description

technical field [0001] The invention relates to the technical field of electrochemical detection, in particular to a peak area calculation method for electrochemical data analysis. Background technique [0002] Electrochemistry calculates the current peak height or area and compares it with the standard solution under the same conditions to obtain the ion concentration. When the default concentration is zero, the current peak height is zero, so the standard solution should be calibrated before electrochemically measuring the sample. , to find the corresponding relationship between the current sample concentration and the current peak height or area. After the electrochemical instrument scans to obtain the electrochemical data, the peak shape is irregular, and the peak shape is related to the enrichment time before scanning and the scanning rate during scanning. , scanning voltage, and scanning voltage step size are related to the sample. However, the instrument manufacturer ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/26
Inventor 余道洋刘平
Owner CILIN & CAS ENVIRONMENTAL TECH ANHUIINC