TY - JOUR ID - 139523 TI - Thermal characteristics of humic and hymatomelanic acids of lake sapropels of the ob river right and left banks JO - Eurasian Chemical Communications JA - ECC LA - en SN - 2717-0535 AU - Sartakov, Mikhail Petrovich AU - Natalia Valeryevna, Shpynova AU - Osnitsky, Evgeny Mikhailovich AU - Olga Alexandrovna, Gurova AU - Tsvettsykh, Diana Ivanovna AU - Komissarov, Igor Disanovich AD - Institute of Oil and Gas, Yugorsk State University, Khanty-Mansiysk, Russia AD - Department of Chemistry, State Agrarian University of the Northern Trans-Urals, Tyumen, Russia Y1 - 2021 PY - 2021 VL - 3 IS - 12 SP - 900 EP - 908 KW - Humic acids KW - Hymatomelanic Acids KW - Thermal analysis KW - sapropels KW - Western Siberia DO - 10.22034/ecc.2021.300013.1220 N2 - The research aimed to study the thermal characteristics of Humic and Hymatomelanic acids in the bottom sediments of ten small lakes of the right bank of the Ob river and ten small lakes of the left bank of the Ob River. The studies were conducted using STA 409 PC Luxx synchronous thermal analyzer (Netzsch) with an inert atmosphere in a platinum crucible. The ash content of Humic and Hymatomelanic acids was determined. The ash content of the studied Humic acids was found to depend on the mineralization of the original bottom sediments. Humic acids, silt sands, and sapropel-clayed silts have the highest ash content. Hymatomelanic acids have a low ash content regardless of the mineralization of the original bottom sediments. The ratios of the mass loss in the low-temperature region to the mass loss in the high-temperature area (the "periphery"/"core" ratio) (Z) were calculated. The studies showed similarities and differences between the Humic and Hymatomelanic acids. UR - https://www.echemcom.com/article_139523.html L1 - https://www.echemcom.com/article_139523_59440821cfe643d6346eaabc0ec1a290.pdf ER -