化学
丰度(生态学)
碳同位素
同位素
相对物种丰度
自然丰度
碳纤维
碳-14
放射化学
天体生物学
环境化学
核物理学
质谱法
生态学
色谱法
总有机碳
物理
复合数
复合材料
生物
材料科学
作者
A. O. Nier,Earl A. Gulbransen
摘要
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTVariations in the Relative Abundance of the Carbon IsotopesAlfred O. Nier and Earl A. GulbransenCite this: J. Am. Chem. Soc. 1939, 61, 3, 697–698Publication Date (Print):March 1, 1939Publication History Published online1 May 2002Published inissue 1 March 1939https://pubs.acs.org/doi/10.1021/ja01872a047https://doi.org/10.1021/ja01872a047research-articleACS PublicationsRequest reuse permissionsArticle Views748Altmetric-Citations228LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access optionsGet e-Alertsclose Get e-Alerts
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