1)  δ~(13)C value
碳同位素值
1.
By measuring stable carbon isotopes in leaves of 28 plant species grown at an alpine meadow ecosystem,east of Qinghai-Tibet Plateau during growing season in 2003,we studied the seasonal variations of plants δ~(13)C values and the relationship between δ~(13)C values and environmental factors in natural condition.
不同种植物稳定性碳同位素值变化差别很大,反应了不同植物对环境变化的不同响应。
2)  stable carbon isotopes
稳定碳同位素值
1.
The stable carbon isotopes(δ13C) of 53 plant species were measured in the south edge of Gurbantonggut Desert of Junggar Basin in Xinjiang,China.
通过对准噶尔盆地古尔班通古特沙漠南缘17个科、41个属的53种荒漠植物的稳定碳同位素分析,结果显示准噶尔盆地荒漠植物的叶片稳定碳同位素值在-7。
3)  carbon isotopes
碳同位素
1.
On the basis of characteristics of geochemistry of Wengu 2 well natural gas,The formation is studied in this paper by using the methods of compare Carbon isotopes,Helium Argon isotopes of Wengu 2 well natural gas with coal-derived gas and oil-derived gas of Huabei area.
在对天然气地球化学特征研究的基础上,对文古2井天然气碳同位素、氦同位素、氩同位素与华北地区煤成气、油型气的这些同位素进行了类比,并结合地质背景综合分析了天然气的成因。
2.
On the basis of analysising chemical composition, carbon isotopes of natural gases and inclusions in volcanic rock, the authors discover that abiogenic natural gases exist in Xujiaweizi area.
烃类气体中具有重碳同位素异常 ( >- 2 0‰ )和负碳同位素系列(δ13C1>δ13C2 >δ13C3)的同位素分布特征 ,表现出无机成因烃类气体的特点。
3.
The maximum relative deviation of composition contents is less than 10%,and the maximum absolute deviation of carbon isotopes is less than 1‰.
对南方海相烃源岩进行吸附气和酸解气脱气方法研究,并对其组分进行色谱和同位素分析,该方法组分含量的最大相对偏差小于10%,碳同位素值的最大绝对偏差小于1‰。
4)  stable carbon isotope
碳同位素
1.
The stable carbon isotopes of saturated hydrocarbon and specific compound composition of the oil from the trachyte near the crater are relatively low,and the negative anomalies of the .
通过对欧利坨子原油地球化学特征的研究,发现原油性质的差异同储集层与火山口的相对位置有着密切的关系,在火山口附近的粗面岩储集层中,原油的饱和烃及其单体碳同位素值偏轻,类异戊二烯烃的碳同位素负异常基本消失,原油的CPI和OEP值较低(平均为1·21和1·06)。
2.
This paper correlates the oils and source rocks in composite basins through the gas chromatogram, stable carbon isotope, biomarker parameters and multi-variant statistical analysis.
　应用谱图形态、碳同位素分布、生标参数和多元统计法,对叠合盆地的油源对比研究进行了分析对比,发现谱图直接对比,虽简单明了,但叠合盆地的成藏特征会使得一些不具成因联系的样品具相似谱图,或有成因联系的样品谱图差别却较大;碳同位素分布亦较直观,但分馏效应使得判别时偏离值不易把握;生标参数虽具成因意义,但受多因素影响;生标参数组合能同时全面反映各控制因素;分段成熟度可以有效地判识混源油;多元统计法既能处理大量样品又能清楚界定相关性。
3.
Trophic relationships among various organisms from Zhubi coral reef ecosystem in Nansha Islands were studied by stable carbon isotope technique.
利用稳定碳同位素分析技术研究了南沙渚碧礁生态系食物网主要生物类群之间的营养关系 。
5)  carbon isotopic composition
碳同位素
1.
The carbon isotopic compositions of the methane and ethane in the gases are greatly different.
天然气甲、乙烷碳同位素变化较大,其中QHD30-1构造天然气乙烷碳同位素最重,而BZ28-1构造天然气甲烷碳同位素最重。
2.
Biomarker and carbon isotopic composition indicate that the oils are quite similar geochemically but the geochemical characteristics of source rocks have differente evident though all source rock share some common characteristics of lacustrine depositional environment.
选择干酪根碳同位素、Pr/Ph和生物标志化合物比值等参数计算下白垩统3套烃源岩之间的相关系数,通过聚类分析,将下白垩统烃源岩分为6类,下沟组下段和赤金堡组上段烃源岩的相关性很好,而中沟组、下沟组上段和赤金堡组下段的烃源岩差异较大。
3.
The second is from the Triassic source rocks, which is similar to the first group in carbon isotopic composition, but is characteristica.
根据准东地区各油田原油的碳同位素、生物标志化合物组成特征等,可将该地区原油分为5类。
6)  carbon isotope
碳同位素
1.
Application of Carbon isotope in Revealing Environment Changes;
稳定性碳同位素在揭示环境变化中的应用
2.
Analysis of the source and the composition of PAHs carbon isotope in atmospheric particles of Urumchi City;
乌鲁木齐空气颗粒物中PAHs碳同位素组成及来源解析
3.
Application of coal bed methane stable carbon isotope in exploration of coal bed methane field;
稳定碳同位素δ~(13)C_1在煤层气田勘探中的应用
参考词条
补充资料：碳同位素分离
分子式：
CAS号：

性质：分离碳同位素方法有低温精馏法、低温吸收分离法、化学交换法、热扩散法、气体扩散法和激光法等。低温精馏法具有塔容积小、过程的可逆性大、流程紧凑，又能同时生产其他轻同位素等优点。已建成工业规模生产13C装置。化学交换法具有常温常压操作，回流简便、分离系数大，过程易自动化、设备简单、能耗低、直接获得高浓13C产品等优点，是公斤级13C生产的好方法。

说明：补充资料仅用于学习参考，请勿用于其它任何用途。