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|---|---|---|---|
| 001 | 657283 | ||
| 005 | 20231030041504.0 | ||
| 035 | _a(RuTPU)RU\TPU\network\23785 | ||
| 090 | _a657283 | ||
| 100 | _a20180123a2017 k y0engy50 ba | ||
| 101 | 0 | _aeng | |
| 135 | _adrcn ---uucaa | ||
| 181 | 0 | _ai | |
| 182 | 0 | _ab | |
| 200 | 1 |
_aComposition of organic compounds in bottom sediments of lakes in the taiga and steppe zones in Siberia _fO. V. Serebrennikova, E. V. Strelnikova, I. V. Russkikh |
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| 203 |
_aText _celectronic |
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| 300 | _aTitle screen | ||
| 320 | _a[References: 40 tit.] | ||
| 330 | _aThe paper presents chromatographic-mass spectrometric data on the individual composition of organic compounds in sapropel-like deposits of lakes in the steppe, forest-steppe, and three taiga natural climatic zones (NCZ) in Khakassia and western Siberia. Data on the individual composition of n-alkanes, carboxylic acids and their esters, thiophenes, phytol, phytone, steroids, and di- and triterpenoids and on their distribution in the sediments show systematic variations in the composition of the organic matter (OM) with increasing ambient temperature and the aridity of the climate. The concentrations of all groups of the compounds in lacustrine sediments decrease southward, and simultaneously esters with long (up to С20) alkyl substituents appear. The concentrations of oxygen-bearing compounds increase among the acyclic structures and triterpenoids, as also do the concentrations of structures ketonic substituents among the steroids. The dominance of the carboxylic acids and their esters by high molecular weight homologues gives way to the dominance of palmic acid and its derivatives. Among n-alkanes, the dominance of С27 and С29 hydrocarbons typical of terrestrial plants gives way to a higher percentage of homologues С21-С25 (macrophytes) and С31 (herbaceous plants). Among the tocopheroles, the concentration of the oxidized form of α-tocopherol (acetate) increases. | ||
| 333 | _aРежим доступа: по договору с организацией-держателем ресурса | ||
| 461 | _tGeochemistry International | ||
| 463 |
_tVol. 55, iss. 12 _v[P. 1090–1104] _d2017 |
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| 610 | 1 | _aэлектронный ресурс | |
| 610 | 1 | _aтруды учёных ТПУ | |
| 610 | 1 | _aдонные отложения | |
| 610 | 1 | _aозерные отложения | |
| 610 | 1 | _aорганические вещества | |
| 610 | 1 | _aн-алканы | |
| 610 | 1 | _aкарбоновые кислоты | |
| 610 | 1 | _aэфиры кислот | |
| 610 | 1 | _aдитерпеноиды | |
| 610 | 1 | _aстероиды | |
| 610 | 1 | _aкетоны | |
| 700 | 1 |
_aSerebrennikova _bO. V. _cgeochemist _cProfessor of Tomsk Polytechnic University, Doctor of chemical sciences _f1949- _gOlga Viktorovna _2stltpush _3(RuTPU)RU\TPU\pers\30954 |
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| 701 | 1 |
_aStrelnikova _bE. V. _gEvgeniya |
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| 701 | 1 |
_aRusskikh _bI. V. _gIrina Vladimirovna |
|
| 712 | 0 | 2 |
_aНациональный исследовательский Томский политехнический университет (ТПУ) _bИнститут природных ресурсов (ИПР) _bКафедра геологии и разведки полезных ископаемых (ГРПИ) _h2181 _2stltpush _3(RuTPU)RU\TPU\col\18660 |
| 801 | 2 |
_aRU _b63413507 _c20180123 _gRCR |
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| 856 | 4 | _uhttps://doi.org/10.1134/S0016702917090087 | |
| 942 | _cCF | ||