搜索结果: 1-15 共查到“知识库 PTR-MS”相关记录19条 . 查询时间(0.183 秒)
Application of PTR-MS to an incubation experiment of the marine diatom Thalassiosira pseudonana
dimethyl sulfide, isoprene, methanethiol
2017/4/12
Emission of trace gases from the marine diatom Thalassiosira pseudonana (CCMP1335) was continuously monitored
with a proton transfer reaction-mass spectrometry (PTR-MS) in an axenic batch culture sys...
Analysis of the chemical composition of organic aerosol at the Mt. Sonnblick observatory using a novel high mass resolution thermal-desorption proton-transfer-reaction mass-spectrometer (hr-TD-PTR-MS)
the chemical composition organic aerosol the Mt. Sonnblick observatory hr-TD-PTR-MS
2010/11/3
For the first time a high mass resolution thermal desorption proton transfer reaction mass spectrometer (hr-TD-PTR-MS) was deployed in the field to analyze the composition of the organic fraction of a...
中国科学院安徽光学精密机械研究所光谱学研究室产品：有机物实时在线监测质谱仪PTR-MS（图）
中国科学院 安徽光学精密机械研究所 光谱学研究室产品 有机物实时在线监测质谱仪PTR-MS
2011/4/21
产品概述：利用离子-分子反应进行有机物的软电离，并通过质谱完成离子质量的分辨和测量。特别适合对痕量挥发性有机物进行在线快速检测，它的显著特点是：测量速度快，灵敏度高；碎片离子少，谱图分析简单；绝对浓度测量，不需要定标。主要应用领域：空气环境挥发性有机污染检测；化工污染源有机物排放或有毒气体泄露监测；化学毒剂检测；痕量炸药等危险品检测和监控工业生产或催化过程等。
PTR-MS measurements of non-methane volatile organic compounds during an intensive field campaign at the summit of Mount Tai, China, in June 2006
PTR-MS measurements non-methane volatile organic compounds an intensive field campaign June 2006
2010/8/16
Owing to recent industrialization, Central East China has become a significant source of air pollutants. To examine the processes controlling the chemistry and transport of tropospheric ozone, we perf...
Aerosol analysis using a Thermal-Desorption Proton-Transfer-Reaction Mass Spectrometer (TD-PTR-MS):a new approach to study processing of organic aerosols
Aerosol analysis Thermal-Desorption Proton-Transfer-Reaction Mass Spectrometer organic aerosols
2010/3/5
We present a novel analytical approach to measure the chemical composition of organic aerosol. The new instrument combines proton-transfer-reaction mass-spectrometry (PTR-MS) with a collection-thermal...
Comparison of aromatic hydrocarbon measurements made by PTR-MS, DOAS and GC-FID during the MCMA 2003 Field Experiment
PTR-MS DOAS GC-FID MCMA
2010/2/21
A comparison of aromatic hydrocarbon measurements is reported for the CENICA supersite in the district of Iztapalapa during the Mexico City Metropolitan Area field experiment in April 2003 (MCMA 2003)...
Simultaneous factor analysis of organic particle and gas mass spectra: AMS and PTR-MS measurements at an urban site
organic particle gas mass spectra AMS PTR-MS
2010/2/21
During the winter component of the SPORT (Seasonal Particle Observations in the Region of Toronto) field campaign, particulate non-refractory chemical composition and concentration of selected volatil...
Sample drying to improve HCHO measurements by PTR-MS instruments: laboratory and field measurements
HCHO PTR-MS laboratory and field measurements
2010/2/21
A significant improvement in the PTR-MS instrument sensitivity to formaldehyde was obtained by drying the air sample to a dew point of −30 °C using a cold trap to condense and freeze water vapou...
Emissions and ambient distributions of Biogenic Volatile Organic Compounds（BVOC）in a ponderosa pine ecosystem: interpretation of PTR-MS mass spectra
Biogenic Volatile Organic Compounds BVOC ponderosa pine ecosystem PTR-MS mass spectra
2010/2/21
Two proton-transfer-reaction mass spectrometry systems were deployed at the Bio-hydro-atmosphere interactions of Energy, Aerosols, Carbon, H2O, Organics and Nitrogen-Southern Rocky Mountain 2008 field...
Real-time profiling of organic trace gases in the planetary boundary layer by PTR-MS using a tethered balloon
Real-time profiling organic trace gases planetary boundary layer PTR-MS tethered balloon
2010/2/8
A method for real-time profiling of volatile organic compounds (VOCs) was developed combining the advantages of a tethered balloon as a research platform and of proton transfer reaction mass spectrome...
Flux estimates of isoprene, methanol and acetone from airborne PTR-MS measurements over the tropical rainforest during the GABRIEL 2005 campaign
Flux estimates isoprene methanol airborne PTR-MS tropical rainforest
2009/7/15
Tropical forests are a strong source of biogenic volatile organic compounds (BVOCs) to the atmosphere which can potentially impact the atmospheric oxidation capacity. Here we present airborne and grou...
Comparison of Volatile Flavour Profiles of Kidney Beans and Soybeans by GC-MS and PTR-MS
Aroma flavour kidney beans
2009/6/10
The volatile compounds of kidney beans and soybeans were analysed by gas chromatography mass spectrometry (GC-MS) and proton transfer reaction mass spectrometry (PTR-MS). Fingerprint PTR-MS spectra of...
Measurement of atmospheric sesquiterpenes by proton transfer reaction-mass spectrometry (PTR-MS)
Measurement atmospheric sesquiterpenes proton transfer reaction-mass spectrometry
2010/2/8
The ability to measure sesquiterpenes (SQT; C15H24) by a Proton-Transfer-Reaction Mass Spectrometer (PTR-MS) was investigated. SQT calibration standards were prepared by a capillary diffusion method a...
主流烟气中气相成分的PTR-MS分析
主流烟气中气相成分的PTR-MS分析
2009/4/2
我们用质子传递反应质谱（PTR-MS）对30通道秃鹰吸烟机采集的Kentucky控制样1R4F和2R4F卷烟主流烟气中的气相有机组分进行了分析。PTR-MS是一种化学离子化方法，在这种方法中，用所产生的水合离子来电离质子亲合力比水大的挥发性化合物，因而消除了大多数无机物的干扰。用PTR-MS分析甲醛、乙醛、丙烯醛、1，3-丁二烯、丙烯睛、苯乙烯、苯、甲苯和异戊二烯。根据这些气相测试结果和预期的...
Ground-based PTR-MS measurements of reactive organic compounds during the MINOS campaign in Crete, July–August 2001
Ground-based PTR-MS reactive organic compounds MINOS campaign
2009/3/11
This study presents measurements of acetonitrile, benzene, toluene, methanol and acetone made using the proton-transfer-reaction mass spectrometry (PTR-MS) technique at the Finokalia ground station in...