[1] [1] Meng D S, Zhao N J, Ma M J, et al. Rapid soil classification with laser induced breakdown spectroscopy［J］. Spectroscopy and Spectral Analysis, 2017, 37(1): 241-246.

[2] [2] Wang J M, Yan H Y, Zheng P C, et al. Quantitative detection of nutrient elements in soil based on laser induced breakdown spectroscopy［J］. Chinese Journal of Lasers, 2017, 44(11): 1111002.

[3] [3] Wang X L, Hong X, Wang H, et al. Study of spectral characteristics and aging performance of room temperature vulcanized silicone rubber using laser-induced breakdown spectroscopy［J］. Proceedings of the CSEE, 2017, 37(10): 2774-2782.

[4] [4] Yang Y X, Kang J, Wang Y R, et al. Super sensitive detection of lead in water by laser-induced breakdown spectroscopy combined with laser-induced fluorescence technique［J］. Acta Optica Sinica, 2017, 37(11): 1130001.

[5] [5] Wang Y J, Yuan X Q, Shi B, et al. The research for quantitative analysis of iron in Myanmar jades using laser induced breakdown spectroscopy［J］. Spectroscopy and Spectral Analysis, 2018, 38(1): 263-266.

[6] [6] Hu Y, Li Z H, Lü T. Quantitative measurement of iron content in geological standard samples by laser-induced breakdown spectroscopy combined with artificial neural network［J］. Laser & Optoelectronics Progress, 2017, 54(5): 053003.

[7] [7] Lin Q Y, Duan Y X. Laser-induced breakdown spectroscopy: from experimental platform to field instrument［J］. Chinese Journal of Analytical Chemistry, 2017, 45(9): 1405-1414.

[8] [8] Li A, Wang L W, Guo S, et al. Advances in signal enhancement mechanism and technology of laser induced breakdown spectroscopy［J］. Chinese Journal of Optics, 2017, 10(5): 619-640.

[9] [9] Wang J M, Zheng H J, Zheng P C, et al. Spectral characteristics of coptis chinensis plasma induced by orthogonal re-heating double-pulse laser［J］. Chinese Journal of Lasers, 2018, 45(7): 0702006.

[10] [10] Yu Y, Zhao N J, Fang L, et al. Comparative study on laser induced breakdown spectroscopy based on single pulse and re-heating orthogonal dual pulse［J］. Spectroscopy and Spectral Analysis, 2017, 37(2): 588-593.

[11] [11] Zhou W D, Li K X, Qian H G, et al. Effect of voltage and capacitance in nanosecond pulse discharge enhanced laser-induced breakdown spectroscopy［J］. Applied Optics, 2012, 51(7): B42-B48.

[12] [12] Xu S N, Jiang R, Ning R B, et al. Effect of laser-induced crater on soil plasma radiation characteristics［J］. Chinese Journal of Lasers, 2015, 42(11): 1115005.

[13] [13] Li C, Gao X, Liu L, et al. Evolution of laser-induced plasma spectrum intensity under magnetic field confinement［J］. Acta Physica Sinica, 2014, 63(14): 145203.

[14] [14] Iqbal A, Sun Z W, Wall M, et al. Sensitive elemental detection using microwave-assisted laser-induced breakdown imaging［J］. Spectrochimica Acta Part B: Atomic Spectroscopy, 2017, 136: 16-22.

[15] [15] Lednev V N, Pershin S M, Sdvizhenskii P A, et al. Combining Raman and laser induced breakdown spectroscopy by double pulse lasing［J］. Analytical and Bioanalytical Chemistry, 2017, 410(1): 277-286.

[16] [16] Chen T B, Huang L, Yao M Y, et al. Elemental analysis of rice using microwave assisted-laser induced breakdown spectroscopy［J］. Journal of Optoelectronics·Laser, 2016, 27(2): 171-176.

[17] [17] Tampo M, Miyabe M, Akaoka K, et al. Enhancement of intensity in microwave-assisted laser-induced breakdown spectroscopy for remote analysis of nuclear fuel recycling［J］. Journal of Analytical Atomic Spectrometry, 2014, 29(5): 886-892.

[18] [18] Viljanen J, Sun Z W, Alwahabi Z T. Microwave assisted laser-induced breakdown spectroscopy at ambient conditions［J］. Spectrochimica Acta Part B: Atomic Spectroscopy, 2016, 118: 29-36.

[19] [19] Chen S J, Iqbal A, Wall M, et al. Design and application of near-field applicators for efficient microwave-assisted laser-induced breakdown spectroscopy［J］. Journal of Analytical Atomic Spectrometry, 2017, 32(8): 1508-1518.

[20] [20] Guo S H, Wu B, Zhang L Y, et al. Risk of heavy metal concentration in agricultural product exceeding the safe standard: occurrence process, forewarning and control［J］. Journal of Agro-Environment Science, 2018, 37(1): 1-8.

[21] [21] Li W B. Detecting heavy metals in leafy vegetables and method of signal enhancement based on laser induced breakdown spectroscopy［D］. Nanchang: Jiangxi Agriculture University, 2015: 28-30.

[22] [22] Yang H, Huang L, Liu M H, et al. Detection of Cd in Chinese cabbage by laser induced breakdown spectroscopy coupled with multivariable selection［J］. Chinese Journal of Analytical Chemistry, 2017, 45(2): 238-244.

[23] [23] Wang Q, Chen X L, Wang J G, et al. Research on factors affecting the stability of laser-induced plasmas［J］. Acta Optica Sinica, 2014, 34(6): 0630002.

[24] [24] Ma Y F, Zhang Q M, Wu B, et al. Measurement method of electromagnetic fields of plasma produced by hypervelocity impact［J］. Transactions of Beijing Institute of Technology, 2011, 31(9): 1118-1121.