2) Carbon isotope composition
碳同位素组成
1.
The reverse series of carbon isotope composition of natural gas in this area is mainly caused by the same-type and different-source gas or the same source and different-phase gas in humic-type organic ma.
本区天然气的碳同位素组成具有倒转序列特征,这主要是由腐殖型母质的“同型不同源”气或“同源不同期”气的混合造成的,同时也不排除由天然气中某一或某些组分被细菌氧化所造成。
2.
The molecular compositions and compound-specific stable carbon isotope compositions of individual n-alkanes from surface sediments of the East China Sea(ECS) mud areas including the coastal mud area,the southwest mud area to Cheju Island,and the Northern Okinawa Trough were analyzed using gas chromatography/mass spectrometry(GC/MS) and gas chromatography/isotopic ratio mass spectrometry (GC/IRMS).
利用气相色谱(GC)和气相色谱/同位素比值质谱(GC/IRMS)对东海近岸泥质区、济州岛西南泥质区和冲绳海槽北部表层沉积物中正构烷烃的单体碳同位素组成及分布进行了分析。
3.
The stable carbon isotope compositions in plant leaves can be used to provide information of original carbon in soil organic matter and paleo-ecological evolutions, based on the good relationship between the stable carbon isotope compositions and water use efficiency in plants or plant productivity to some extent.
测定了青藏高原北部 13个地点 10 1份草本植物叶片碳同位素组成 (δ13C值 ) ,结果发现 ,植物叶片δ13C值的分布范围在 - 2 9。
3) carbon isotopic composition
碳同位素组成
1.
Abnormal carbon isotopic compositions in organic matter of lacustrine source rocks close to sea
部分近海湖相烃源岩有机质异常碳同位素组成
2.
Purpose of this study is to reveal the variation characteristics of kerogen during thermal evolution by determining the residual rate of kerogen and the carbon isotopic composition of residual kerogen at (different thermal) (evolution) stages, thus providing evidence of carbon isotope for quantitative identification and assessment of effective gas source rock.
通过测定一个Ⅰ型干酪根在不同热演化阶段的残余率和残余部分的碳同位素组成,揭示其在热演化过程中的变化规律,从而为有效气源岩的定量判识与评价提供同位素方面的依据。
3.
The carbon isotopic composition of saturated and aromatic hydrocarbons, the oil isotopic curve and individual saturated hydrocarbon isotopic composition are studied in this paper.
通过对辽河盆地东部凹陷原油的饱和烃、芳烃的碳同位素组成特征、原油同位素类型和单体烃同位素特征进行研究 ,发现整个东部凹陷原油及其组分的碳同位素值偏重 ,指示其源岩有机质中藻类和低等水生生物的贡献较少 ;饱和烃—芳烃的碳同位素值关系揭示东部凹陷大部分原油样品与沙河街组沙三段烃源岩的特征相近 ,而南部和北部地区少数样品表现出负的碳同位素异常 ,与该区中生界源岩样品的接近 ,推测原油中可能混入了中生界来源的油气。
5) carbon isotopic compositions
碳同位素组成
1.
Characteristics of carbon isotopic compositions in karst mountain plants and their indication to water use efficiency——A case study on Yangzhong catchment in Huaxi, Guizhou;
喀斯特山区植物碳同位素组成特征及其对水分利用效率的指示——以贵州花溪杨中小流域为例
2.
The results show that individual n-alkanes in the western Qaidam crude oils have heavier carbon isotopic compositions,δ~(13)C value ranging from -23.
利用GC-C-MS技术测定柴达木盆地原油单体正构烷烃碳同位素组成,研究它们的碳同位素组成特征和分布型式,以探究原油的成因。
3.
A suite of 40 crude oil samples from 16 oil fields in the Qaidam basin were analyzed using IRMS, and features, main controlling factors and genetic types of carbon isotopic compositions for these crude oils were studied.
对采集于柴达木盆地 16个油田的 4 0个原油进行了碳同位素测定 ,研究了它们碳同位素组成特征、主控因素及其成因类型。
6) stable carbon isotope composition
碳同位素组成
1.
The stable carbon isotope compositions in surface soil organic matter(δ13Corg) are medley information mainly from the standing terrestrial plants.
表土有机质碳同位素组成(1δ3Corg)反映了来自于地表各种植物1δ3Corg的一个混合信息。
补充资料：同位素组成
分子式：
CAS号：
性质：以重量或原子百分比表示的某元素中各同位素所占的比例。如氧的同位素组成为：16O=99.762％、17O=0.038％、18O=0.200％。自然界中，大部分元素具有稳定的同位素组成。同位素组成可变的元素主要是具放射性衰变而不断减少的元素、有放射成因同位素不断累积的元素及某些轻元素。
CAS号：
性质：以重量或原子百分比表示的某元素中各同位素所占的比例。如氧的同位素组成为：16O=99.762％、17O=0.038％、18O=0.200％。自然界中，大部分元素具有稳定的同位素组成。同位素组成可变的元素主要是具放射性衰变而不断减少的元素、有放射成因同位素不断累积的元素及某些轻元素。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条