Measurement of extremely 2H-enriched water samples by laser spectrometry: application to batch electrolytic concentration of environmental tritium samples國際原子能機(jī)構(gòu)（International Atomic Energy Agency -- IAEA）研究人員應(yīng)用LGR水同位素分析儀測量高2H富集水樣（備注：該文章是IAEA的研究人員獨(dú)立發(fā)表的文章，具有權(quán)威性、客觀性和獨(dú)立性，亦可廣泛使用。）IAEA的研究人員發(fā)表了一篇應(yīng)用LGR水同位素分析儀（912-0032）測量高2H富集水樣的文章，文章有2個(gè)目的：（1）論證基于OA-ICOS技術(shù)的水同位素分析儀可以快速獲得高準(zhǔn)確性和高精度的自然豐度水樣和氘富集水樣（delta_2H ~ +57,000‰）的δ2HVSMOW-SLAP 數(shù)值；（2）隨后論證基于激光技術(shù)2H富集方法測量水樣的效能，以促進(jìn)進(jìn)行批處理3H電解富集的環(huán)境氚水實(shí)驗(yàn)室的生產(chǎn)力。文章中還簡要說明了應(yīng)用CRDS分析儀測量高2H富集水樣的情況（CRDS水同位素分析儀可測量數(shù)值約為750‰的δ2HVSMOW-SLAP樣品，但兩個(gè)樣品之間需要大于20次以上的注射才可去除顯著...
發(fā)布時(shí)間:
2016
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01
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18
瀏覽次數(shù)：71
UNSW researchers have used a new water-tracing technology in the Sydney Basin for the first time to determine how groundwater moves in the different layers of rock below the surface.新南威爾士大學(xué)（UNSW）研究人員在悉尼盆地首次應(yīng)用新的水源示蹤技術(shù)監(jiān)測地表下不同巖層下的地下水運(yùn)動(dòng) http://newsroom.unsw.edu.au/news/science-tech/new-water-tracing-technology-help-protect-sydney-basin-groundwater
發(fā)布時(shí)間:
2016
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01
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15
瀏覽次數(shù)：30
LGR的二氧化碳同位素分析儀幫助中國科學(xué)院的科學(xué)家監(jiān)測“新鮮有機(jī)物的質(zhì)量對土壤有機(jī)物的啟動(dòng)和微生物底物利用率模式的影響” Quality of fresh organic matter affects priming of soil organic matter and substrate utilization patterns of microbesHui Wang1, 2 , Thomas W. Boutton3 , Wenhua Xu1 , Guoqing Hu1, 2 , Ping Jiang1 , Edith Bai1 AbstractChanges in biogeochemical cycles and the climate system due to human activities are expected to change the quantity and quality of plant litter inputs to soils. How changing quality of fresh organic matter (FOM) might influence the priming effect (PE) o...
發(fā)布時(shí)間:
2015
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10
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16
瀏覽次數(shù)：60
Rapid, Online Quantification of H2S in JP-8 Fuel Reformate Using Near-Infrared Cavity-Enhanced Laser Absorption Spectroscopy應(yīng)用LGR激光痕量氣體分析儀快速在線量化JP-8（特級(jí)航空材料）中的H2SFeng Dong?, Christian Junaedi?, Subir Roychoudhury?, and Manish Gupta*?? Los Gatos Research, 67 East Evelyn Avenue, Suite 3, Mountain View, California 94041, United States? Precision Combustion, Inc., 410 Sackett Point Road, North Haven, Connecticut 06473, United StatesAnal. Chem., 2011, 83 (11), pp 4132–4136DOI: 10.1021/ac200300tPublication Date (Web): May 3, 2011Copyright © 2011 American Chemical SocietyAbstractOn...
發(fā)布時(shí)間:
2015
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10
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10
瀏覽次數(shù)：79
Ecosystem carbon (CO2 and CH4) fluxes of a Populus dettoides plantationin subtropical China during and post clear-cutting Shenghua Gao a, Jiquan Chen b, Yuxi Tang c, Jing Xie d, Rui Zhang e, Jie Tang c, Xudong Zhang a,*a State Key Laboratory of Tree Genetics and Breeding, Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, Chinab Center for Global Change and Earth Observations (CGCEO) and Department of Geography, Michigan State University, East Lansing, MI 48823, USAc Hunan Academy of Forestry, Chang...
發(fā)布時(shí)間:
2015
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09
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15
瀏覽次數(shù)：43
HYPERSPECTRAL REMOTE SENSING FOR DETECTION OF RHIZOCTONIA CROWN AND ROOT ROT IN SUGARBEETGregory J. Reynolds1, Carol E. Windels2, Ian V. MacRae3, and Soizik Laguette4Graduate Student, Professor, Associate Professor, and Assistant Professor, respectively1University of Minnesota, Department of Plant Pathology, St. Paul2University of Minnesota, Department of Plant Pathology and Northwest Research & Outreach Center, Crookston3University of Minnesota, Department of Entomology and Northwest Research & Outreach Center, Crookston4University of North Dakota, Department of Earth System Science a...
發(fā)布時(shí)間:
2015
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08
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11
瀏覽次數(shù)：47
DETECTION OF SUGARCANE AFRICAN STALK BORER ELDANASACCHARINA WALKER (LEPIDOPTERA: PYRALIDAE) USINGHYPERSPECTRAL REMOTE SENSING (SPECTRORADIOMETRY)應(yīng)用ASD地物光譜儀檢測蛀蟲ELDANA SACCHARINA（鱗翅目：螟蛾科）對非洲甘蔗莖部的危害程度MOKHELE TA1, AHMED F1 and CONLONG DE2,31School of Environmental Sciences, University of KwaZulu-Natal, Durban, 4041, South Africa2South African Sugarcane Research Institute, Private Bag X02, Mount Edgecombe 4300, South Africa3School of Biological and Conservation Sciences, University of KwaZulu-Natal, Private Bag X01, Scottsville, 3209, South AfricaAbstractThe South African sugar industry i...
發(fā)布時(shí)間:
2015
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08
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06
瀏覽次數(shù)：64
LGR氧化亞氮同位素分析儀測量水中硝酸鹽成功案例：Analytical Chemistry 文章：Combining Denitrifying Bacteria and Laser Spectroscopy for Isotopic Analyses (δ15N, δ18O) of Dissolved Nitrate通過反硝化細(xì)菌和激光同位素分析儀測定溶解硝酸鹽中的δ15N和δ18ODavid X. Soto *?, Geoff Koehler ?, and Keith A. Hobson ?? Environment Canada, 11 Innovation Boulevard, Saskatoon, Saskatchewan, Canada, S7N 3H5AbstractWe present a novel approach for nitrogen (δ15N) and oxygen (δ18O) isotopic analysis of nitrate in water based on the isotopic analysis of N2O produced from the conversion of NO3– by cultured denitrifying bacteria and off-axis integrated cavity output ...
發(fā)布時(shí)間:
2015
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07
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21
瀏覽次數(shù)：59
Nature 發(fā)表文章：In-situ unsaturated zone stable water isotope (2H and 18O) measurements in semi-arid environments using tunable o-axis integrated cavity output spectroscopy科學(xué)家應(yīng)用LGR液態(tài)水同位素分析儀在半干旱環(huán)境下原位測量不飽和帶水中2H和18O同位素比值M. Gaj1,2, M. Beyer1, P. Koeniger1, H. Wanke3, J. Hamutoko3, and T. Himmelsbach11 Federal Institue for Geosciences and Natural Resources (BGR), Stilleweg 2, Hannover, Germany2 Chair of Hydrology, Faculty of Environment and Natural Resources, University of Freiburg, Fahnenbergplatz, 79098 Freiburg, Germany3Universit...
發(fā)布時(shí)間:
2015
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07
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07
瀏覽次數(shù)：44
Inter- and intraindividual correlations of background abundances of 2H, 18O and 17O in human urine and implications for DLW measurements科學(xué)家應(yīng)用LGR同位素分析儀測定人體尿液中的2H,18O和17O豐度間的相互作用對DLW測量方法的影響E S F Berman, E L Melanson, T Swibas, S P Snaith and J R SpeakmanBackground/Objectives:The method of choice for measuring total energy expenditure in free-living individuals is the doubly labeled water (DLW) method. This experiment examined the behavior of natural background isotope abundance fluctuations within and between individuals over time to assess possible methods of accounting for varia...
發(fā)布時(shí)間:
2015
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07
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01
瀏覽次數(shù)：35