• Laser & Optoelectronics Progress
  • Vol. 57, Issue 23, 233002 (2020)
Zhang Linying1、2, Li Jing1、2, Rao HongHui1、2, Zhou HuaMao1、2, Huang Lin2、3, Liu MuHua1、2, Chen JinYin3, and Yao MingYin1、2、*
Author Affiliations
  • 1College of Engineering, Jiangxi Agricultural University, Nanchang, Jiangxi 330045, China
  • 2Jiangxi Key Laboratory of Modern Agricultural Equipment, Nanchang, Jiangxi 330045, China
  • 3Collaborative Innovation Center of Postharvest Key Technology and Quality Safety of Fruits and Vegetables in Jiangxi Province, Nanchang, Jiangxi 330045, China
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    DOI: 10.3788/LOP57.233002 Cite this Article Set citation alerts
    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 Copy Citation Text show less
    Schematic of element detection using LIBS
    Fig. 1. Schematic of element detection using LIBS
    LIBS images of Huanglongbing and healthy navel orange juices
    Fig. 2. LIBS images of Huanglongbing and healthy navel orange juices
    Original LIBS image and 9SM+MSC spectrum of Huanglongbing navel orange juices
    Fig. 3. Original LIBS image and 9SM+MSC spectrum of Huanglongbing navel orange juices
    Scatter plot of Huanglongbing and healthy navel orange juices
    Fig. 4. Scatter plot of Huanglongbing and healthy navel orange juices
    ParameterHuanglongbing navel orangeHealthy navel orangeT valuep value
    Mass fraction of Ca/(μg·g-1)595.1±153.5415.6±75.1-2.9520.016
    Mass fraction of K/(μg·g-1)669.6±146.5575.3±50.8-1.9140.088
    Mass fraction of Zn/(μg·g-1)47.0±15.232.2±11.92.7200.017
    Sugar content /°Brix8.7±1.811.4±1.46.4070
    Table 1. Differences in true concentration of healthy and Huanglongbing navel oranges
    ParameterHuanglongbing navel orangeHealthy navel orangeT valuep value
    Intensity of Ca II 393.37 nm5577.9±1435.84997.3±965.01.8500.082
    Intensity of Ca II 396.68 nm3641.3±945.23136.0±591.62.5330.021
    Intensity of Ca I 422.67 nm453.2±95.2609.7±150.6-4.8770
    Intensity of Mg II 279.55 nm1152.2±168.51226.5±158.1-1.3260.202
    Intensity of Mg I 794.44 nm1009.9±107.71258.5±98.4-9.7250
    Intensity of Mg II 821.39 nm3255.3±391.74413.9±355.4-14.6200
    Intensity of Mg I 844.57 nm3242.3±107.74117.2±98.4-11.1570
    Intensity of K I 766.49 nm5357.4±861.85144.9±881.51.5020.152
    Intensity of Na I 588.99 nm1112.5±201.82747.6±1028.9-7.5870
    Intensity of Fe II 769.63 nm4930.6±417.55778.4±430.6-6.2720
    Intensity of Fe II 867.85 nm3797±442.95004.1±361.9-13.6860
    Intensity of C I 247.86 nm358.3±52.5467.0±73.1-9.0390
    Intensity of H I 656.28 nm9219.8±1595.810500.5±1961.0-10.0380
    Intensity of O I 777.19 nm12672.0±2218.315004.5±1552.1-4.4710
    Table 2. Differences in LIBS characteristic spectral intensity of healthy and Huanglongbing navel orange juices
    Test setParameterPCA-MLPPCA-RBF
    Healthy navel orangeHuanglongbingnavel orangeHealthy navel orangeHuanglongbingnavel orange
    Training setCorrect number123114109124
    Error number881810
    Precision rate /%93.893.485.892.5
    Forecast setCorrect number46554844
    Error number3355
    Precision rate /%93.994.890.695.7
    Table 3. Identification accuracies of healthy and Huanglongbing navel oranges using different models
    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
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