[1] [1] Nicholas G Paltridge, Lachlan J Palmer, Paul J Milham, et al. Plant Soil, 2012, 361: 251.

[2] [2] Lugendo I, Mohammed N K, Mussa L M, et al. Radioanal Nucl. Chem., 2013, 297: 215.

[3] [3] Muhammad Ali, Tasrina Rabia Choudhury, Babul Hossain, et al. Springer Plus, 2014, 3: 341.

[4] [4] Essa Hariri, Martine I Abboud, Sally Demirdjian, et al. Journal of Food Composition and Analysis, 2015, 42: 91.

[5] [5] Keshav Krishna A, Tarun C Khanna, Rama Mohan K. Spectrochimica Acta Part B: Atomic Spectroscopy, 2016, 122(8): 165.

[6] [6] Tom Schoonjans, Vicente Armando Solé, Laszlo Vincze, et al. Spectrochimica Acta Part B, 2013, 82(4): 36.

[8] [8] Conrey R M, Goodman-Elgar M, Bettencourt N, et al. Geochemistry: Exploration, Environment, Analysis, 2014, 14(3): 291.

[9] [9] Trevor J Morgan, Anthe George, Aikaterini K Boulamanti, et al. Energy Fuels, 2015, 29(3): 1669.

[10] [10] Ryota Yagi, Kouichi Tsuji. X-Ray Spectrometry, 2015, 44(3): 186.

[11] [11] Li Xiaoli, Yu Zhaoshui. Applied Radiation and Isotopes, 2016, 111(5): 45.

[12] [12] David Hradil, Petr Bezdika, Janka Hradilová, et al. Microchemical Journal, 2016, 125(3): 10.

[13] [13] Ryan J G, Shervais J W, Li Y, et al. Chemical Geology, 2017, 451(2): 55.