1)trace gases痕量气体
1.Measurement of atmospheric trace gases by spectroscopic and chemical techniques;大气痕量气体测量的光谱学和化学技术
2.Remote sensing plays an important role in understanding the tropospheric atmospheric chemistry and the source and sink of green house gases for its ability of monitoring the distributions of trace gases and their dynamic change in global scale.利用遥感监测全球尺度上的痕量气体分布以及动态变化,对于理解对流层大气化学以及温室气体的源与汇具有重要的意义。
英文短句/例句
1.Study on Atmospheric Trace Gas Measurements Using Zenith-sky Scattered Light-DOAS Technique;利用天顶散射光-DOAS方法测量大气痕量气体研究
2.Impacts of Air Parcel Transport on the Concentrations of Trace Gases at Regional Background Stations输送对区域本底站痕量气体浓度的影响
3.LED Illuminant-Based Detection of Trace NO_2 Gases基于LED光源痕量二氧化氮气体的检测
4.NF3 is a colorless gas. Trace quantities of impurities can impart a musty or pungent odor to the gas.)NF3是无色气体。痕量的杂质会使气体带有一种霉味或刺激性气味。
5.The Study of Near-infrared Photoacoustic Spectroscopy and Trace Detection Technology of CH4甲烷气体近红外光声光谱及痕量探测技术研究
6.Determination of Trace As and Se in Complex Matrix Sample by Inductively Coupled Plasma-Mass Spectrometry with O_2 Collision/Reaction Cell等离子体质谱-氧气碰撞池技术测定复杂基体样品中痕量砷和硒
7.Sample Matrix-Assisted Photo-Induced Chemical Vapor Generation Atomic Fluorescence Spectrometric Determination of Mercury in Wine or Liquor Samples;样品基体辅助光诱导化学蒸气发生原子荧光法测定酒中的痕量汞
8.Determination of trace penylethylene in water with bromide derivatization and gas chromatography溴化衍生气相色谱法测定环境水体中痕量苯乙烯
9.testing methods for determination of trace components in diluent gas and zero gas稀释气及零气中痕量组分测定法
10.Determination of Trace Freon F-12 by 5A Molecular Sieve Adsorption Gas Chromatography5A分子筛气相色谱法测定痕量CFC12
11.Catalytic Spectrophotometric System for Determination of Trace-level Aluminium (Ⅲ) and Ultratrace-level Copper (Ⅱ);靛蓝胭脂红体系催化光度法测定痕量铝和超痕量铜
12.DNA Genetyping of the Trace Bloodstains on the Adsorbent Object;吸附性载体上微量血痕的DNA分型
13.Catalytic Solid Substrate-room Temperature Phosphorescence Method for Determination of Trace Selenium催化固体基质室温燐光法测定痕量硒
14.Determination of Trace Aluminium by Air-acetylene Flame Atomic Absorption Spectrometry空气—乙炔火焰原子吸收光谱法测定痕量铝
15.Determination of Trace Amounts of Copper by Flow Injection Vapor Generation AAS流动注射蒸气发生原子吸收光谱测定痕量铜
16.The trace analysis of arsenic in oil cracking gas phase products by cold atomic fluorescence method石油裂解气相产物中痕量砷的冷原子荧光分析
17.Study on the Method of Rapid Test for Trace Heavy Metals in the Air of Workplaces工作场所空气中痕量重金属速测方法的研究
18.Determination of trace cadmium in natural water by double aqueous phase gas floatation spectrophotometry双水相气浮浮选光度法测定天然水中痕量镉
相关短句/例句
Trace gas痕量气体
1.The continuous field measurement of some trace gases on the surface air was conducted at Shangdianzi Regional Background Station(117°07′E,40°39′N,293.9 m)开展了对大气中痕量气体的连续在线监测,获得了NO、NO2、SO2、CO和O3等气体组分的变化特征、变化规律和浓度水平。
2.Selected ion flow tube mass spectrometry(SIFT-MS) is a powerful combination of the fast flow tube technique, chemical ionisation using selected precursor ions H_3O+, NO+ and O~2+ etc, and quantitative mass spectrometry that allows on-line, real time quantitative analysis of the trace gases (such as ethanol, acetaldehyde, ammonia, acetone and isoprene etc.介绍了选择离子流动管(SIFT)技术、SIFTMS的分析方法及其物理和离子化学基础、SIFTMS在不同领域的痕量气体分析中的应用。
3)atmospheric trace gas大气痕量气体
4)trace gas痕量气体;微量气体 TG
5)trace reactive gases痕量活性气体
1.The variation characteristics of these trace reactive gases and the factors which influenced them were analyzed under different weather conditions such as in sunny days,rainy days,hazy days and sand-dusty days.结果表明:(1)痕量活性气体在不同天气条件下具有不同的浓度及日变化特征,晴天和雨天日变化最小,而霾天日变化最大;(2)风向和风速是影响上甸子气体浓度变化的重要因素,同时,夏季降水对SO2和NOx的去除作用较为明显;(3)上甸子O3白天最大值与夜间最小值的比值低于4,远低于城区,不利于光化学污染的形成。
6)Trace gas analysis痕量气体分析
延伸阅读
大气痕量气体分子式：CAS号：性质：在大气中比正常大气组成气体的相对含量要低得多的气体，通常它们的体积浓度均小于1%。洁净空气中的稳定气体，如氦(含量约5.2×10-6)、氩(约1.1×10-6)、氙(约0.03×10-6)；不稳定气体如一氧化碳(约0.02×10-6)、氧化亚氮(<0.6×10-6)、臭氧(<0.05×10-6)、氨(<0.02×10-6)、甲烷(<2×10-6)、硫化氢(<0.002×10-6)和卤化物(<2×10-9)等均为痕量气体。由于人类活动大量排放各种痕量气体，会造成大气污染。如碳氧、氮氧、硫氧和氯氧等化合物以及许多人工合成化学品、有机物等，有些参与生物地球化学循环(如碳、氮、硫、氯的化合物)。痕量气体在对流层中可完全混合而均匀分布；但在半流层中则混合不良，分布不均匀。现在对二氧化碳、甲烷、氧化亚氮、臭氧和氟氯烃等痕量气体在全球的分布、迁移、循环、转化及其效应较为重视；这是由于它们会破坏臭氧层，发生温室效应，而导致气候变化，危及生态系统之故。
