搜索结果: 1-8 共查到“理学 87Sr/86Sr”相关记录8条 . 查询时间(0.109 秒)
微钻取样-TIMS/MC-ICPMS和LA-MC-ICPMS分析矿物岩石87Sr/86Sr比值的技术比较
热电离质谱/多接收电感耦合等离子体质谱 激光剥蚀多接收电感耦合等离子体质谱
2014/10/11
微区Sr同位素体系相对于传统全岩Sr同位素研究，可以揭示样品自身存在的不均一性，更好地反映样品经历的地质过程，已被广泛应用于各种地质研究领域，如研究壳幔相互作用、岩浆起源和演化，岩浆体系开放性研究，沉积盆地物源示踪及气候环境研究。准确测定Rb-Sr同位素比值是应用该同位素体系的前提。微钻取样-热电离质谱/多接收电感耦合等离子体质谱（TIMS/MC-ICPMS）和激光剥蚀多接收电感耦合等离子体质谱（...
牙齿中微量元素Sr的含量和87Sr/86Sr比值可提供居民生活地域、饮食习惯以及口腔健康信息，广泛运用于口腔医学、科技考古、法医鉴定、古生态学等领域。对陕南地区居民健康齿和龋齿中Sr含量和87Sr/86Sr比值进行测定，结果表明，龋齿中Sr含量在79.70~85.80 μg/g之间，而健康齿中Sr含量在128.00~156.77 μg/g之间，龋齿中Sr含量明显低于健康齿；但87Sr/86Sr比值...
Spatial distribution of 87Sr/86Sr ratios of stream sediments in Shikoku Island and the Kii Peninsula, Southwest Japan
geochemical map stream sediment
2017/4/11
Geochemical mapping of 87Sr/86Sr ratios in Shikoku Island and the Kii Peninsula of Southwest Japan was performed
using 233 samples of stream sediments (<180 μm). The spatial distribution of 87Sr/86Sr...
热电离质谱法测定龋齿牙釉质87Sr/86Sr同位素比值
龋齿 牙釉质 锶同位素 锶特效树脂
2013/10/30
锶同位素已经成为国际考古学界用于探索人和动物迁移活动和食谱组成的主要方法。本文利用锶特效树脂(Sr-Spec), 建立了快速分离富集于人龋齿中的微量元素锶, 并测定87Sr/86Sr的有效方法。采用硝酸-高氯酸体系消解龋齿样品, 利用锶特效树脂(Sr-Spec)快速分离富集龋齿中微量元素锶(Sr), 最后采用IsoProbe-T固体热电离质谱计测定龋齿87Sr/86Sr同位素比值。实验结果表明, ...
Variations of 87Sr/86Sr in Water from Streams Discharging into the Bothnian Bay,Baltic Sea
Variations 87Sr/86Sr Ratio Bothnian Bay
2009/10/27
The 87Sr/86Sr ratio in 53 water samples were analysed, 26 from streams in
Sweden, 22 from streams in Finland and 5 from the Bothnian Bay itself. The
brackish seawater of the bay had the isotope rati...
Variations in the 87Sr/86Sr Ratio in Lake Waters from Central Sweden
Variations 87Sr/86Sr Ratio Central Sweden
2009/10/27
The 87Sr/86Sr sratiros of lake waters from eastern Central Sweden, a region
consisting mainly of 1.7-2.0 x lo9 years old granitoid rocks are reported and
discussed. The ratios range from 0.722-0.739...
为了评估青藏高原化学风化对海水Sr同位素比值变化的影响, 系统采集了中国境内源自青藏高原的7条主要河流(金沙江、澜沧江、怒江、黄河、雅砻江、岷江与大渡河)的河水及河床沉积物样品, 分析它们的Sr含量及同位素比值. 结合其他学者研究的青藏高原南部的恒河、布拉马普特拉河、印度河及伊洛瓦底江数据, 此11条大河搬运的总Sr通量为3.47×109 mol·a-1, 占全球河流搬运入海总通量的10.2 %;...
Geochemical implication of 87Sr/86Sr ratio of high-temperature deep groundwater in a fractured granite aquifer
87Sr/86Sr ratio fractured granite aquifer thermal water time lag indicator groundwater cycle
2017/8/10
The Dongrae thermal water area located at the southeast margin of the Korean Peninsula is one of the oldest hot springs in Korea and has been used in spas since the 9th Century. In this paper, a geoch...