溶解有机物的分子化学多样性由水素体衰变释放:对碳循环和内源性污染物产生的影响
Tinghui Min1, Junkai Zhang1, Jinyu Wang1
1College of Chemistry and Materials Science, Key Laboratory of Analytical Science and Technology of Hebei Province, Hebei University, Baoding, 071002, PR China; State Key Laboratory of New Pharmaceutical Preparations and Excipients, Baoding, 071002, PR China; Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education, Hebei University, Baoding, 071002, PR China.
International journal of biological macromolecules
|February 15, 2026
概括
水植物衰变释放溶解有机物 (HDOM),影响水质. 这项研究描述了HDOM分子组成,揭示了红素.
科学领域:
- 环境化学环境化学
- 水生生态系统 水生生态系统
- 有机地化学 有机地化学
背景情况:
- 幼化增加了水植物衍生溶解有机物 (HDOM),降低了水质,威胁了生态安全.
- 关于从腐烂的水生植物中释放出来的HDOM的分子组成的知识有限.
研究的目的:
- 研究四种不同的水植物中溶解的有机碳和无机碳的释放模式.
- 用先进的质谱技术分析HDOM的分子指纹和组成.
主要方法:
- 从四种水植物中释放的溶解有机和无机碳的量化.
- 使用里埃转换离子循环共振质谱法 (FT-ICR-MS) 进行HDOM分子组成的表征.
- 使用超高性能液体染色学-四极飞行时间质谱法 (UPLC-QTOF-MS) 识别有机污染物和分子公式.
主要成果:
- 基于CHO的配方构成了HDOM的主要分子成分.
- 根据生物化学类别,素,脂质和蛋白质约占HDOM的80%.
- 反复性DOM占HDOM的62%,在素中的反复性CHON化合物有助于降解抵抗.
- 脂质和脂质类,有机环和类化合物是主要的有机污染物类别.
结论:
- HDOM的组成主要由CHO配方组成,其中素,脂质和蛋白质的贡献很大.
- 素衍生的CHON化合物的回收性影响HDOM的生物降解性.
- 了解HDOM的分子组成对于阐明湖泊缩机制和管理水生有机污染物至关重要.
更多相关视频
相关概念视频
00:54What are Biogeochemical Cycles?
40.0K
The most common elements in organic molecules, carbon, hydrogen, oxygen, nitrogen, sulfur, and phosphorus, are only available in the ecosystem in limited amounts. Therefore, these nutrients must be recycled through both biotic and abiotic components of the ecosystem, in processes generally called biogeochemical cycles.
40.0K
00:46Bioremediation
22.5K
Bioremediation is the use of prokaryotes, fungi, or plants to remove pollutants from the environment. This process has been used to remove harmful toxins in groundwater as a byproduct of agricultural run-off and also to clean up oil spills.
22.5K
02:17What is Organic Chemistry?
94.0K
Organic chemistry is the study of compounds of carbon called organic compounds. Organic compounds either originate from living organisms or are synthesized by chemists. A defining trait of these compounds is the presence of carbon as the principal element, which is bonded to other carbon atoms and other elements such as hydrogen, oxygen, nitrogen, and sulfur. The existence of a wide array of organic molecules is a consequence of carbon atoms’ ability to form up to four strong bonds to...
94.0K
01:15Metabolism of Chemolithotrophs
933
Chemolithotrophs are microorganisms that obtain energy by oxidizing inorganic molecules such as hydrogen gas (H₂), ammonia (NH₃), reduced sulfur compounds (H₂S, S²⁻), and ferrous iron (Fe²⁺). Unlike heterotrophic organisms that rely on organic carbon, chemolithotrophs transfer electrons from these inorganic donors to the electron transport chain (ETC), generating a proton motive force (PMF) that drives ATP synthesis through oxidative phosphorylation.
933
01:14The Carbon Cycle
44.3K
Carbon is the basis of all organic matter on Earth, and is recycled through the ecosystem in two primary processes: one in which carbon is exchanged among living organisms, and one in which carbon is cycled over long periods of time through fossilized organic remains, weathering of rocks, and volcanic activity. Human activities, including increased agricultural practices and the burning of fossil fuels, has greatly affected the balance of the natural carbon cycle.
44.3K
01:30Environmental Applications of Microorganisms
1.2K
Microorganisms play a pivotal role in maintaining ecosystem balance by recycling essential elements such as carbon, nitrogen, and phosphorus, as well as supporting processes like bioremediation, wastewater treatment, and biofuel production.Microbes in Elemental CyclesIn the carbon cycle, microorganisms decompose organic matter, releasing carbon dioxide via aerobic respiration. This carbon dioxide is subsequently used by photosynthetic organisms to synthesize organic compounds, closing the...
1.2K