岩矿测试2017，Vol.36Issue(1)：75-81,7.DOI:10.15898/j.cnki.11-2131/td.2017.01.011
渤海东海海洋沉积物中碳氮稳定同位素标准物质研制
The Preparation of Carbon and Nitrogen Stable Isotopes Reference Materials Using Sediments from the Bohai and East China Seas
摘要
Abstract
The stable isotope of carbon and nitrogen (δ13C and δ15N) in marine sediments have received much attention as they can be used to trace the sources of organic matter and are helpful in understanding the carbon cycle, climate change and the transformation of organic matter in the ambient environment.However, during stable carbon and nitrogen isotopic analysis and testing, the standard reference materials for quality control are limited.Three reference materials of carbon and nitrogen stable isotope (MSCNI-1, MSCNI-2 and MSCNI-3) have been developed from marine sediments in the Bohai Jinzhou Bay, the coast of Fujian and Zhejiang in the east part of the China sea and the ocean through Okinawa within the East China Sea, respectively.All of these reference materials have certified values of the total carbon and nitrogen isotope (δ13C-TC, δ15N-TN) and organic carbon and nitrogen isotope (δ13C-Corg, δ15N-Norg) which were determined by an inter-laboratory comparison of 8 participating laboratories, using Element Analysis-Isotope Ratio Mass Spectrometry (EA-IRMS).The analytical results indicate that three reference materials were homogeneous (in Table 1) and stable (in Table 2) as the certified values had no statistically variations within a year.The standard uncertainties of δ13C and δ15N were less than 0.15% and 0.24% (in Table 4), respectively.Both of the certified values and uncertainties are within acceptable limits.The reference materials of natural carbon and oxygen isotopes were initially developed based on marine sediments in China.The test method was accurate and reliable, thus it is anticipated that it can be used for instrument calibration, method evaluation and quality control in related laboratories such as marine, geological and environmental fields.关键词
海洋沉积物/碳稳定同位素/氮稳定同位素/标准物质Key words
marine sediments/carbon stable isotopes/nitrogen stable isotopes/reference materials分类
海洋科学引用本文复制引用
秦德谛,贺行良,张媛媛,李凤,陈宇峰,张培玉..渤海东海海洋沉积物中碳氮稳定同位素标准物质研制[J].岩矿测试,2017,36(1):75-81,7.基金项目
国家自然科学基金资助项目(41406076) （41406076）
中国地质调查局矿评专项(12120113022000) （12120113022000）
