[1] [1] JIN Y L, LIU P, WU Y N, et al. A systematic review on food lead concentration and dietary lead exposure in China［J］. Chinese Medical Journal, 2014, 127(15): 2844-2849.

[2] [2] GE L, LIU H L. Engineering grey nanosystem as activatable ratio-co-lorimetric probe for detection of lead ions in preserved egg［J］. Analytical Sciences: the Iinternational Journal of the Japan Society for Analytical Chemistry, 2020, 36(11): 1407-1413.

[3] [3] SEBASTIAN T, CRISTIAN D’A, WALTER S, et al. Potentialities of a laser-induced breakdown spectroscopy technique in the study of polymer composites［J］. Applied Spectroscopy, 2020, 74(6): 655-660.

[4] [4] PABLOSMARTIN A, CONTRERAS J A T, WAHL S, et al. Fluorine loss determination in bioactive glasses by laser-induced breakdown spectroscopy (LIBS)［J］. International Journal of Applied Glass Science, 2021, 12(2): 213-221.

[5] [5] ZHANG Q H, LIU Y Zh, YIN W Y, et al. The in situ detection of smoking in public area by laser-induced breakdown spectroscopy［J］. Chemosphere, 2020, 242(8): 125184.

[6] [6] REHAN I, GONDAL M A, ALMESSIERE M A, et al. Nutritional and toxic elemental analysis of dry fruits using laser induced breakdown spectroscopy (LIBS) and inductively coupled plasma atomic emission spectrometry (ICP-AES)［J］. Saudi Journal of Biological Sciences, 2021, 28(1): 408-416.

[7] [7] CAO L, WANG Y, WU L, et al. Laser induced breakdown spectroscopy and its application in the pharmaceutical market［J］. Chinese Journal of Pharmaceutical Analysis,2021,41(1):13-20(in Chin-ese).

[8] [8] WANG W, KONG W W, SHEN T T, et al. Quantitative analysis of cadmium in rice roots based on LIBS and chemometrics methods［J］. Environmental Sciences Europe, 2021, 33(1):1-14.

[9] [9] GUO W L, QIU R, WANG Ch F, et al. Detection of chromium in atmospheric aerosol by laser induced breakdown spectroscopy［J］. Ch-inese Journal of Quantum Electronics, 2020,37(6):745-751(in Ch-inese).

[10] [10] XU C, FAN Sh, XU Z P, et al. Investigation of detection of cadmium in the rice leaves based on laser induced breakdown spectroscopy［J］. Chinese Journal of Quantum Electronics, 2020,37(3):363-369 (in Chinese).

[11] [11] CHEN J X, CHEN S, YANG Y T, et al. Quantification of major elements in limestones using laser-induced breakdown spectroscopy combined with multivariate regression approaches［J］. Metallurgical Analysis,2021,41(1):13-23.

[12] [12] HAO X J, SUN Y K. Simultaneous detection of multi-elements in coal based on laser-induced breakdown spectroscopy［J］. Laser Technology,2020,44(1):119-124(in Chinese).

[13] [13] HAO X J, REN L, YANG Y W, et al. Quantitative analysis of carbon in coal based on laser-induced breakdown spectroscopy［J］. Laser Technology,2020,44(2):232-236(in Chinese).

[14] [14] LUO H, JIN K, TAO J, et al. Properties prediction and design of self-healing epoxy resin combining molecular dynamics simulation and back propagation neural network［J］. Materials Research Express, 2021, 8(4):1-15.

[15] [15] ZHANG Q H, LIU Y Zh, YIN W Y, et al. The online detection of carbon isotopes by laser-induced breakdown spectroscopy［J］. Journal of Analytical Atomic Spectrometry, 2020,35(21):341-346.

[16] [16] QU Y F, ZHANG Q H, YIN W Y, et al. Real-time in situ detection of the local air pollution with laser-induced breakdown spectroscopy［J］. Optics Express, 2019, A27(12): 790-799.

[17] [17] YANG L Q Q, CHU M X, LIU B L, et al. Pattern recognition of Sthenoteuthis oualaniensis based on BPNN about momentum and self-adaption［J］. Journal of Tropical Oceanography,2021,40(6):102-110(in Chinese).

[18] [18] CHENG H, SUN L, LI J G. Neural Network approach to retrieving ocean subsurface temperatures from surface parameters observed by satellites［J］. Water, 2021, 13(3): 388.