Laser & Optoelectronics Progress, Volume. 57, Issue 23, 233002(2020)
LIBS-Based Element Detection and Quality Identification of Huanglongbing Navel Oranges
Figures & Tables(7)
Fig. 3. Original LIBS image and 9SM+MSC spectrum of Huanglongbing navel orange juices
Table 1. Differences in true concentration of healthy and Huanglongbing navel oranges
View tableTable 1. Differences in true concentration of healthy and Huanglongbing navel oranges
Parameter Huanglongbing navel orange Healthy navel orange T value p value Mass fraction of Ca/(μg·g-1) 595.1±153.5 415.6±75.1 -2.952 0.016 Mass fraction of K/(μg·g-1) 669.6±146.5 575.3±50.8 -1.914 0.088 Mass fraction of Zn/(μg·g-1) 47.0±15.2 32.2±11.9 2.720 0.017 Sugar content /°Brix 8.7±1.8 11.4±1.4 6.407 0
Table 2. Differences in LIBS characteristic spectral intensity of healthy and Huanglongbing navel orange juices
View tableTable 2. Differences in LIBS characteristic spectral intensity of healthy and Huanglongbing navel orange juices
Parameter Huanglongbing navel orange Healthy navel orange T value p value Intensity of Ca II 393.37 nm 5577.9±1435.8 4997.3±965.0 1.850 0.082 Intensity of Ca II 396.68 nm 3641.3±945.2 3136.0±591.6 2.533 0.021 Intensity of Ca I 422.67 nm 453.2±95.2 609.7±150.6 -4.877 0 Intensity of Mg II 279.55 nm 1152.2±168.5 1226.5±158.1 -1.326 0.202 Intensity of Mg I 794.44 nm 1009.9±107.7 1258.5±98.4 -9.725 0 Intensity of Mg II 821.39 nm 3255.3±391.7 4413.9±355.4 -14.620 0 Intensity of Mg I 844.57 nm 3242.3±107.7 4117.2±98.4 -11.157 0 Intensity of K I 766.49 nm 5357.4±861.8 5144.9±881.5 1.502 0.152 Intensity of Na I 588.99 nm 1112.5±201.8 2747.6±1028.9 -7.587 0 Intensity of Fe II 769.63 nm 4930.6±417.5 5778.4±430.6 -6.272 0 Intensity of Fe II 867.85 nm 3797±442.9 5004.1±361.9 -13.686 0 Intensity of C I 247.86 nm 358.3±52.5 467.0±73.1 -9.039 0 Intensity of H I 656.28 nm 9219.8±1595.8 10500.5±1961.0 -10.038 0 Intensity of O I 777.19 nm 12672.0±2218.3 15004.5±1552.1 -4.471 0
Table 3. Identification accuracies of healthy and Huanglongbing navel oranges using different models
View tableTable 3. Identification accuracies of healthy and Huanglongbing navel oranges using different models
Test set Parameter PCA-MLP PCA-RBF Healthy navel orange Huanglongbing navel orange Healthy navel orange Huanglongbing navel orange Training set Correct number 123 114 109 124 Error number 8 8 18 10 Precision rate /% 93.8 93.4 85.8 92.5 Forecast set Correct number 46 55 48 44 Error number 3 3 5 5 Precision rate /% 93.9 94.8 90.6 95.7
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Zhang Linying, Li Jing, Rao HongHui, Zhou HuaMao, Huang Lin, Liu MuHua, Chen JinYin, Yao MingYin. LIBS-Based Element Detection and Quality Identification of Huanglongbing Navel Oranges[J]. Laser & Optoelectronics Progress, 2020, 57(23): 233002
Paper Information
Category: Spectroscopy
Received: Mar. 9, 2020
Accepted: --
Published Online: Nov. 30, 2020
The Author Email: MingYin Yao (mingyin800@126.com)
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