Overlapping Peak Analysis of Soil Heavy Metal X-Ray Fluorescence Spectra Based on Sparrow Search Algorithm

Ying CHEN; Zheng-ying LIU; Chun-yan XIAO; Xue-liang ZHAO; Kang LI; Li-li PANG; Yan-xin SHI; Shao-hua LI

doi:10.3964/j.issn.1000-0593(2021)07-2175-06

Spectroscopy and Spectral Analysis, Volume. 41, Issue 7, 2175(2021)

Overlapping Peak Analysis of Soil Heavy Metal X-Ray Fluorescence Spectra Based on Sparrow Search Algorithm

Ying CHEN^1、1;, Zheng-ying LIU^1、1;, Chun-yan XIAO^2、2;, Xue-liang ZHAO^{1、1; 3;}, Kang LI^3、3;, Li-li PANG^3、3;, Yan-xin SHI^3、3;, and Shao-hua LI^4、4;

Author Affiliations

¹1. Hebei Province Key Laboratory of Test/Measurement Technology and Instrument, School of Electrical Engineering, Yanshan University, Qinhuangdao 066004, China

²2. School of Resources and Environment, Henan Polytechnic University, Jiaozuo 454000, China

³3. Center for Hydrogeology and Environmental Geology, China Geological Survey, Geological Environment Monitoring Engineering Technology Innovation Center of The Ministry of Natural Resources, Baoding 071051, China

⁴4. Hebei Sailhero Environmental Protection Hi-tech Co., Ltd., Shijiazhuang 050000, China

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Figures & Tables(9)

Fig. 1. Diagram of overlapping peaks

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Fig. 2. Spectral denoising and background subtraction before and after comparison
(a): S-G smooth denoising;(b): Linear background minus background

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Fig. 3. SSA flow chart

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Fig. 4. Fitness value change curve of SSA

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Fig. 5. Diagram of overlapping peak decomposition results

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Table 1. The error rate of Pb predicted area after EM algorithm decomposition
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Table 1. The error rate of Pb predicted area after EM algorithm decomposition
组号预测面积误差率/%
1 41.54 24.27
2 48.24 12.05
3 51.05 5.55

Table 2. The error rate of Pb predicted area optimized by SSA
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Table 2. The error rate of Pb predicted area optimized by SSA
重金属含量/
(mg·kg^-1) 预测峰面积实际峰面积相对误差
率/%
100 12.38 14.88 0.064
200 21.87 20.78 0.05
400 46.03 44.06 0.041
600 54.85 54.05 0.014

Table 3. Position error of each peak after EM algorithm decomposition

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Table 3. Position error of each peak after EM algorithm decomposition

重金属含量 /(mg·kg^-1)	Pb-L_α1 预测值	Pb-L_α1 误差率/%	Pb-K_α1 预测值	Pb-K_α1 误差率/%	Pb-K_α2 预测值	Pb-K_α2 误差率/%
第一组	10.607	0.55	10.525	0.17	10.443	0.61
第二组	10.608	0.56	10.517	0.25	10.418	0.85
第三组	10.552	0.03	10.488	0.52	10.386	1.15

Table 4. Position error of each peak after SSA optimization

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Table 4. Position error of each peak after SSA optimization

重金属含量 /(mg·kg^-1)	Pb-L_α1 预测值	Pb-L_α1 误差率/%	As-K_α1 预测值	As-K_α1 误差率/%	As-K_α2 预测值	As-K_α2 误差率/%
Pb100-As200	10.552 9	0.036	10.533	0.09	10.453 9	0.5
Pb100-As400	10.571 8	0.2	10.537 6	0.05	10.448 3	0.55
Pb400-As600	10.608 8	0.56	10.526 1	0.16	10.442 6	0.61
Pb600-As400	10.542 1	0.06	10.67	1.2	10.511 8	0.045

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Ying CHEN, Zheng-ying LIU, Chun-yan XIAO, Xue-liang ZHAO, Kang LI, Li-li PANG, Yan-xin SHI, Shao-hua LI. Overlapping Peak Analysis of Soil Heavy Metal X-Ray Fluorescence Spectra Based on Sparrow Search Algorithm[J]. Spectroscopy and Spectral Analysis, 2021, 41(7): 2175

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