The geologists have attached much importance to the particularity of ReOs isotopic system and its application is getting popular. The author sums up and compares several kinds of sample digestion methods for ReOs isotope analysis (NiS fire assay, Carius tube digestion, high pressure asher, leaching, and water disposing), the procedures of separating Os ( conventional distillation, liquid Br2 and CCl4 or CHCl3 extraction, rapid extraction with low blank, minitype distillation) and purifying Os, improved mass spectrometry measurement of Os isotope and its application progress in the earth science research brought along the improved measuring method.

總結(jié)和對(duì)比了近年來(lái)ReOs同位素分析中樣品分解的不同方法（NiS火試金法色色婷婷网、Carius管溶樣法机机干免费在线视频、高壓灰化消解法欧美性爱自拍拍、浸提法同性恋的污污网站、水樣處理法）、Os的分離（常規(guī)蒸餾国产玖玖在线播放、液溴和CCl4提取超碰97在线免费观看、快速低本底提取、小型蒸餾）與純化流程日日摸日日搞日日射、Os同位素比值質(zhì)譜測(cè)定法（NTIMS欧美在一区、ICPMS、微區(qū)原位分析）及隨測(cè)定方法的改進(jìn)ReOs同位素體系在地球科學(xué)研究中的應(yīng)用進(jìn)展色污精品免费看。

The carbon isotope data of carbon dioxide, 3He to 4He rado and the inverted sequence of methane-ethane-propane isotope proved that the gas reservoirs in this area were resulted from the inorganic mantle source gas.

CO2的碳同位素資料wwwxx免费视频，3He / 4He比值及甲烷、乙烷办公室啪啪嗯啊无码免费、丙烷同位素的倒序證明了該區(qū)的氣藏屬于無(wú)機(jī)幔源氣久久久精品久久。

High oxygen isotope temperatures of 650 to 695℃ were obtained when pairing quartz with such resistant minerals as garnet, zircon and kyanite, suggesting that the refractory minerals have preserved their oxygen isotope compositions acquired during eclogitization and only suffered much weaker retrograde metamorphism than the other minerals in the eclogite.

石英-耐熔礦物對(duì)氧同位素溫度主要集中在650～695℃之間，表明耐熔礦物石榴石偷拍性爱网站、鋯石和藍(lán)晶石在該區(qū)榴輝巖中相對(duì)其它礦物來(lái)說(shuō)保存最好开心激情自拍，退變質(zhì)作用最弱，因此其氧同位素溫度與峰期超高壓榴輝巖相變質(zhì)奈件基本一致日韩在线视频艺。

However, the helium isotope analysis data are quite different between them. The abnormal of helium isotope made sure of extraterrestrial origin of iron cosmic spherules.

宇宙球粒的氦同位素分析值卻截然不同久久996国产精品免费；3He/4He×10^(-8)分別為：57.50±2.16和1.23±0.43；4He×10^(-8)cm^3 STP/g分別為：55.54和809.6鲁847www；然而宇宙球粒的氦同位測(cè)定值都比各自的母巖高出許多A片一本污码；氦同位素的異常為所發(fā)現(xiàn)的宇宙球粒的地外來(lái)源更加確定。

Introduction of C 4 food had strong effect on stable isotope metabolism (especially for stable nitrogen isotope) of plateau pikas.

介紹了同位素分餾的基本概念以及利用穩(wěn)定同位素研究水體蒸發(fā)的基本原理欧美日韩A片ww免费。

Introduction of C 4 food had strong effect on stable isotope metabolism (especially for stable nitrogen isotope) of plateau pikas.

則K上的每一個(gè)廣義斜導(dǎo)子μ能被唯一地?cái)U(kuò)展到RF和Q 上。設(shè)R是一個(gè)素環(huán)

The efficiency of isotope exchange was only 2.84%, namely, the amount of less than 3% tritium was exchanged out of the glass uranium bed by deuterium, and after isotope exchange proceeded time after time, its standard deviation was 7.35%.

同位素交換法測(cè)量鈾床氚的結(jié)果如下：加熱充分解吸過(guò)的鈾床經(jīng)多次同位素交換后精品无码久久久久国产精品无码，其交換效率僅為2.84%97操碰免费视频t，即不到3%的氚被氘氣載帶出來(lái)，其同位素交換法測(cè)量的標(biāo)準(zhǔn)差為7.35%小次郎av。

There are thermoluminescence-photoluminescence meter, high accuracy liquid scintillation counter, hot surface ionizing isotope mass-spectrometer, solid isotope mass-spectrometer, multichannel electro-inductance coupling plasma mass-spectrometer, inert gas mass-spectrometer and their corresponding laboratories.

現(xiàn)擁有熱釋光-光釋光儀手机看片1024久久亚洲、高精度液體閃射記錄儀、熱表面電離同位素質(zhì)譜儀h国产在线无码观看视频、多通道電感耦合等離子質(zhì)譜儀和惰性氣體質(zhì)譜儀等儀器及相應(yīng)的年代學(xué)實(shí)驗(yàn)室操乡村熟女A片网址。

Heavy water ; hydrogen isotope ; oxygen isotope ; mass spectrum

重水；氫同位素；氧同位素国产尤物yw视频在线观看；質(zhì)譜

The heavy hydrocarbons of coal-derived gas associated with fresh lacustrine and marsh have relatively hydrogen light isotope but those related with marine environments have relatively heavy hydrogen isotope.

淡水湖沼相烴源巖生成的煤成氣相對(duì)富集氫同位素氕艹艹网址，而海相烴源巖生成的煤成氣則相對(duì)富集氫同位素氘。