Study interaction between humic acids and metal ions using fluorescence quenching approach / O. N. Tchaikovskaya, N. V. Yudina, E. V. Linkevich [et al.] // Proceedings of SPIE. 2018. Vol. 10614 : XIII International conference on atomic and molecular pulsed lasers, September 10-15, 2017, Tomsk, Russia. P. 106140A-1-106140A-4. URL: http://vital.lib.tsu.ru/vital/access/manager/Repository/vtls:000646050