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科研机构
生态环境研究中心 [5]
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学位论文 [5]
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2019 [1]
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环境科学::环境化学 [1]
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内容类型:学位论文
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土壤矿物对土壤可溶性有机质分子多样性的影响
学位论文
北京: 中国科学院生态环境研究中心, 2019
作者:
黄灶泉
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浏览/下载:10/0
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提交时间:2020/07/27
可溶性有机质,分子多样性,土壤矿物,分子分馏,傅立叶变换离子回 旋共振质谱
Dissolved Organic Matter, Molecular Diversity, Soil Mineral, Molecular Fractionation, Ft-icr Ms
基于高分辨质谱的土壤溶解性有机质化学多样性研究
学位论文
北京: 中国科学院生态环境研究中心, 2018
作者:
李晓明
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浏览/下载:24/0
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提交时间:2020/07/15
土壤溶解性有机质, 化学多样性,微生物多样性, 傅立叶变换离子回旋 共振质谱
decreased WIth IncreasIng Iron ComplexIng Index. PAtterns In Molecular PrOfiles IndicAted Dom In Paddy Soils To Become More RecalcItrAnt At Higher Soil C/n rAtio And Higher Soil Ph. furTherMore, PlAnt-derived polyPh.nols And Pyrogenic Dom Were retaIned Favorably By Iron And The ChemodiversIty Of Dom In Paddy Soil Increased WIth IncreasIng Soil C/n rAtios. These Results Provide Novel InFormAtion regardIng Dom Characteristics At a Molecular Level And Will InForm Better Global MAnagement Of Soil Carbon In Paddy Soil EcosysteMs Global. 2) Through The applicAtion Of Ft-icr-Ms, The ChemodiversIty Of Dom In Soil Subjected To Long-term OrgAnic Carbon And InOrgAnic Fertilizer Amendments Was Established. In Parallel, Bcc Was Assessed. Through This Coupled Approach It Was Established.thAt sustaIned OrgAnic Carbon Amendment Resulted In: SignificAntly (p < 0.05) Increased Total Carbon And Total nItrogen Reservoirs In Soil, Dom PrOfiles Of greAter ChemodiversIty, And Emergence Of RecalcItrAnt Dom Moieties (H/c < 1.5). In Contrast, Carbon And nItrogen Reservoirs In Soil Subjected To sustaIned InOrgAnic Fertilizer applicAtion Were Unaltered, While Soil OrgAnic Carbon ChemodiversIty Was Observed To Shift To Less RecalcItrAnt Dom Moieties (H/c rAtio > 1.5 And O/c rAtios < 0.5). furTherMore, sustaIned OrgAnic Carbon Amendment Shaped Bcc To a eutroPh.c stAte While Long-term Chemical fertilizAtion Directed The Bcc Towards An oligotroPh.c stAte. Higher connectivIty And Network complexIty Were Observed In OrgAnic Carbon Amended Soils. Dom-Bcc Network Analysis, IndicAtIng thAt Soil Microbes Had More Interaction WIth Dom Molecules followIng sustaIned OrgAnic mAtter Input. These Results Highlight The Potential For OrgAnic Carbon Amendments To Not Only Build Soil Carbon sTocks And Increase Their Resilience, But To Also Improve The Functional stAte Of Soil Microbial communIties. Key Words: Dom, ChemodiversIty, Microbial diversIty, Ft-icr Ms
致癌性卤代醌介导的脂质氢过氧化物13-HPODE分解的分子反应机理研究
学位论文
博士, 北京: 中国科学院研究生院, 2013
覃浩
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提交时间:2014/09/03
卤代醌
2
5-二氯-1
4苯醌
13-过氧羟基-9
11-十八碳二烯酸
电子自旋共振-自旋捕获技术
脂质烷烃自由基
4-羟基-2-壬烯醛
醌-烷氧脂质耦合产物
Halogenated quinones
2
5-dichloro-1
4-benzoquinone
13-Hydroperoxy-9
11-octadecadienoic acid
ESR spin-trapping
Lipid alkyl radicals
4-Hydroxy-2-nonenal
Quinone-lipid alkoxyl conjugates
基于傅立叶变换离子回旋共振质谱的卤代消毒副产物及天然有机物表征方法研究
学位论文
博士, 北京: 中国科学院研究生院, 2012
张海峰
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浏览/下载:92/0
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提交时间:2013/10/21
天然有机物
ESI FT-ICR MS
消毒副产物
氯消毒
氯胺消毒
混凝
natural organic matter
ESI FT-ICR MS
disinfection by-products
chlorination
chloramination
coagulation
drinking water
汞与生物分子的作用和水溶性汞结合蛋白的研究
学位论文
博士, 北京: 中国科学院研究生院, 2011
李璐
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浏览/下载:46/0
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提交时间:2011/08/03
汞
生物分子
形态分析
联用技术
汞结合蛋白
Mercury
Biomolecules
Speciation analysis
Hyphenated technique
Mercury-binding protein
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