Emission spectrum background correction method
A background correction and emission spectrum technology, applied in the field of chemical measurement, can solve problems such as background spectrum time or sample solution changes, and achieve the effects of reducing application difficulty, improving measurement accuracy, and improving accuracy
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Embodiment 1
[0044] Such as figure 1 As shown, this embodiment provides a method for emission spectrum background correction. The method performs adaptive background subtraction on the actual sample spectrum according to the blank background spectrum to obtain a clean signal spectrum, which specifically includes the following steps:
[0045] S1: Acquisition of blank background spectrum I blank , including m spectrogram data;
[0046] S2: Acquisition of sample spectrum I with continuous background interference sample , including m spectrogram data corresponding to the spectrogram data of the blank background spectrogram;
[0047] S3: Spectrum I from the sample sample Screening n as sample background spectral data I sa,bg , and from the blank background spectrum I blank Select the corresponding n data as the blank background spectral data I for calibration bl,bg , where n≤m, m and n are positive integers;
[0048] S4: According to the sample background spectral data I sa,bg And calibra...
Embodiment 2
[0063] This embodiment explains in detail the operation process involved in the method of the present invention according to a specific example. In this embodiment, a method of screening the original data, performing linear fitting by the least square method, and Example of background correction of sample spectra.
[0064] First, collect the blank background spectrum I separately blank with sample spectrum I sample The data, what table 1 provided is the blank background spectrogram I collected by step S1 and step S2 blank with sample spectrum I sample data, where λ represents the wavelength, and the number of spectrogram data is m=10.
[0065] Table 1 Blank Background Spectrum I blank with sample spectrum I sample The data
[0066] lambda
1
2
3
4
5
6
7
8
9
10
I blank
2.40
3.00
1.60
4.00
3.00
2.50
2.20
2.70
3.10
2.00
I sample
3.05
3.59
2.10
7.56
10.49
6.49
2.74
3.11...
Embodiment 3
[0078] This embodiment explains in detail the operation process involved in the method of the present invention according to a specific example. In this embodiment, a method for linear fitting by weighted least square method and background correction for the sample spectrum will be given. instance of .
[0079] First, collect the blank background spectrum I separately blank with sample spectrum I sample The data. What table 4 provided is by step 1) and step 2) the blank background spectrogram I that gathers blank with sample spectrum I sample , where λ represents the wavelength, and the number of spectrogram data m=10.
[0080] Table 4 Blank Background Spectrum I blank with sample spectrum I sample The data
[0081] lambda
1
2
3
4
5
6
7
8
9
10
I blank
2.40
3.00
1.60
4.00
3.00
2.50
2.20
2.70
3.10
2.00
I sample
3.05
3.59
2.10
7.56
10.49
6.49
2.74
3.11
3.78
2.4...
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