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- SULFUR ISOTOPE RATIO OF SULFATE IN THE RAIN COLLECTED IN NOVEMBER AND DECEMBER 峨眉山雨水所含硫酸根的硫同位素組成
- The isotope ratio is directly used for comparing oils or gases. 同位素比率直接用于比較各種石油或天然氣。
- The atmospheric helium isotope ratio: Is it changing? 大氣氦同位素比率在變化嗎?
- Many environmental processes can cause sulfur isotope fractionation.While microbial sulfate reduction plays a key role in sulfur isotope fractionation in surface environment. 許多環(huán)境過(guò)程可以引起硫同位素分餾，表生環(huán)境下微生物還原硫酸鹽是最重要的硫同位素分餾過(guò)程。
- The Anqing copper deposit has a complicated sulfur isotope composition ,which can not be explained by the variations of a single sulfur source or the physico-chemical conditions. 安徽安慶銅礦床的硫同位素組成復雜，不能用單一硫源或物理化學(xué)條件的變化來(lái)解釋。
- Stable isotope ratio analysis is an effective method for the identification of fruit juice adulteration. 穩定同位素分析法就是根據這種差異對摻假果汁進(jìn)行準確鑒別的有效方法。
- There are differences between natural and adulterated juices in stable isotope ratio. 天然果汁與摻假果汁之間在穩定同位素比率方面存在著(zhù)差異。
- To be sure, some scientists suggest that life could have evolved differently on Titan than on Earth or that the inorganic isotope ratio may be different there. 不過(guò)，還是有些科學(xué)家指出，可能是泰坦和地球上的生命演化過(guò)程不同，或是無(wú)機同位素比率不一樣。
- Analytical services include potassium-argon age determinations, stable isotope ratio analyses, radiocarbon age determinations as well as other radiometric analyses. 分析包括鉀-氬測年，穩定同位素豐度分析，放射性碳測年，以及其他放射性分析。
- SULFUR ISOTOPE OF THE TRIASSIC SEA 三疊紀海的硫同位素
- Keywords Deliquescent aerosol;SO 2;Sulfur isotope; 潮濕氣溶膠;二氧化硫;硫同位素;
- An obvious restraint in the use of isotope ratios results from the need to employ mass spectrometers. 使用同位素比值法有著(zhù)一個(gè)明顯的局限因素，就是要用質(zhì)譜儀進(jìn)行分析。
- Sulfur isotopes suggest that sulfur mainly came from magma, with the entry of materials from inclosing rocks. 銀來(lái)源于五臺群、高于莊組白云質(zhì)灰巖及次火山巖體,錳主要來(lái)源于高于莊組二段含錳灰巖。
- CAN STABLE ISOTOPE RATIOS PROVIDE FOR COMMUNITY-WIDE MEASURES OF TROPHIC STRUCTURE? 穩定性同位素與群落營(yíng)養結構?
- Isotope ratios of Pb contained in wares were measured using Time-Of-Flight Secondary Ion Mass Spectrometry(TOF-SIMS)without any references. 介紹了用飛行時(shí)間二次離子質(zhì)譜法對器物中的鉛同位素比值的測量。
- A method by cumulative intensity of ion current to analyse isotopic ratio is proposed in present paper. 本文介紹了離子流強度累計測定同位素比的方法。
- First, it is a global record: there is remarkably little variation in isotope ratios in sedimentary specimens taken from different continental locations. 第一，它是全球性的記錄：來(lái)自不同大陸位置的沉積物樣品其同位素比例變化非常之小。
- Sea salt sulfate in the upper part of sediment column was dominantly reduced by AOM, and the remained sulfate involving reduction would probably cause positive sulfur isotopic excursion of pyrites. 海水源為主的硫酸鹽參與了沉積物上部的AOM過(guò)程，黃鐵礦硫穩定同位素正偏的原因可能與較強的AOM作用和較多的殘余硫酸鹽參與有關(guān)。
- The characteristics of sulfur isotopic and lead isotopic composition show that the gold deposits in this area are derived from the mantle and deep crust and are related to Mesozoic magmatism. 硫同位素和鉛同位素成分顯示,金來(lái)源于地幔和下地殼,與中生代的巖漿作用有關(guān)。
- gas isotope ratio mass spectrometer 氣體同位素比質(zhì)譜計
