TY - JOUR A1 - Salma, I. A1 - Láng, G. G. T1 - How many carboxyl groups does an average molecule of humic-like substances contain? JO - Atmos. Chem. Phys. J1 - ACP VL - 8 IS - 20 SP - 5997 EP - 6002 Y1 - 2008/10/17 PB - Copernicus Publications SN - 1680-7324 UR - https://acp.copernicus.org/articles/8/5997/2008/ L1 - https://acp.copernicus.org/articles/8/5997/2008/acp-8-5997-2008.pdf DO - 10.5194/acp-8-5997-2008 ER -