High molecular weight humic-like substances in carboneous aerosol of Ulaanbaatar city. Mongolian Journal of Chemistry, [S. l.], v. 19, n. 45, p. 5–11, 2018. DOI: 10.5564/mjc.v19i45.1083. Disponível em: https://www.mongoliajol.info/index.php/MJC/article/view/1083. Acesso em: 18 jun. 2026.