Mass spectrometric determination of the special parameters of the potassium-calcium isotopic system

IEECAS OpenIR > 黄土与第四纪地质国家重点实验室（1985-2004）

	Mass spectrometric determination of the special parameters of the potassium-calcium isotopic system
	Peng, ZC; Wang, JX; Zhang, X; Liu, GJ; He, JF
	2002-11
发表期刊	CHINESE JOURNAL OF ANALYTICAL CHEMISTRY
卷号	30 期号:11 页码:1281-1284
文章类型	Article
摘要	The K-40 similar to Ca-40 isotopic system is important to be used in the geochronology and trace geochemistry. The Ca-40/Ca-42 isotopic ratios and the Ca contents in the CaO reagent and Tahite standard have been determined by using the isotopic dilution mehtod and the Finnigan MAT-262 mass spectrometer. The Ca-40/Ca-42 ratios is 151.43 +/- 0.03 (n = 7) ( standard value: 151.47 +/- 0.03 (n = 5)), while the Ca-40 content in Tahiti is 2.036 +/- 0.003 mumol/g (n = 5) and its relative error between the measured and certified values is +/- 0.13%. The isotopic abundance of K-39, K-40 and K-41 in the national K standard is 0.93260 +/- 0.00012, 0.0001120 +/- 0.0000129 and 0.067286 +/- 0.000125, respectively. The K-39/K-41 ratio of the stable isotopes is 13.860 +/- 0.027 (n = 5), which is consistent to the value of 13.857 +/- 0.006 in the NIST-SRM985 international standard. the precise determination of the special parameters in the K-Ca system is the foundation of timing and tracing study in the future time.
关键词	potassium-calcium standard potassium-calcium isotopic system mass spectrometry
学科领域	Chemistry
收录类别	SCI ; SCIE
语种	中文
WOS研究方向	Chemistry, Analytical
WOS记录号	WOS:000179713000001
出版者	SCIENCE CHINA PRESS
引用统计
文献类型	期刊论文
条目标识符	http://ir.ieecas.cn/handle/361006/12110
专题	黄土与第四纪地质国家重点实验室（1985-2004）
推荐引用方式 GB/T 7714	Peng, ZC,Wang, JX,Zhang, X,et al. Mass spectrometric determination of the special parameters of the potassium-calcium isotopic system[J]. CHINESE JOURNAL OF ANALYTICAL CHEMISTRY,2002,30(11):1281-1284.
APA	Peng, ZC,Wang, JX,Zhang, X,Liu, GJ,&He, JF.(2002).Mass spectrometric determination of the special parameters of the potassium-calcium isotopic system.CHINESE JOURNAL OF ANALYTICAL CHEMISTRY,30(11),1281-1284.
MLA	Peng, ZC,et al."Mass spectrometric determination of the special parameters of the potassium-calcium isotopic system".CHINESE JOURNAL OF ANALYTICAL CHEMISTRY 30.11(2002):1281-1284.