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气相色谱-串联质谱联用仪（GCMS)（图）
质谱联用仪 重庆大学药学院 分析测试平台
2023/11/16
气相色谱-串联质谱联用仪，主要功能及特色：适用于定性或定量分析沸点较低、热稳定性好的有机化合物。
近日，南昌大学生命科学学院罗丽萍教授团队在农林科学领域Top期刊Food Chemistry在线发表题为“Quality assessment of royal jelly based on physicochemical properties and flavor profiles using HS-SPME-GC/MS combined with electronic nose and ele...
Introduction of daily minimum and maximum temperature change signals in the Shikoku region using the statistical downscaling method by GCMs
climate change maximum temperature diurnal temperature range statistical downscaling model Shikoku
2013/10/8
Impacts of climate change may depend more on changes in mean daily minimum temperature (Tmin) or maximum temperature (Tmax) than on average temperature (Tavg). In this study, we apply a statistical do...
Preliminary Considerations for Runoff Modelling in GCMS
Preliminary Considerations Runoff Modelling GCMS
2009/10/26
Modelling of runoff' in GCMs is a two-stage process: first, a residual water
amount resulting from precipitation, evapotranspiration, snowmelt, infiltration
and soil moisture movement at each time s...
栀子花挥发油的GCMS的指纹图谱
栀子花 挥发油 GCMS 指纹图谱
2009/7/3
［目的］建立栀子花挥发油的指纹图谱测定分析方法,为栀子花的质量控制提供参考。［方法］采用标准提取挥发油方法,用 GCMS联用技术对其进行指纹图谱测定,并采用国家药品监督管理局推荐的中药指纹图谱计算软件进行计算,建立栀子花挥发油的共有图谱。［结果］建立的 GCMS研究栀子花挥发油指纹图谱的方法有较好的重现性、精密度和稳定性，RSD均小于5 %,再加上GCMS具有多成分同时定性的优势 ,所...
油菜蜂花粉抗炎成分的GCMS初步分析
油菜蜂花粉 花粉萃取物 抗炎
2010/3/29
研究油菜蜂花粉及其不同溶媒萃取物对小鼠抗炎作用的影响。采用二甲苯致小鼠耳肿胀法评价抗炎药效作用，然后用GCMS分析主要抗炎组分中的化学成分。结果显示油菜蜂花粉不具有抗炎活性，但其氯仿萃取组分与水萃取组分对二甲苯所致耳肿胀有显著的抑制作用（P＜001）。GCMS分析表明，油菜蜂花粉氯仿组分中邻苯二甲酸二丁酯含量为17454%。油菜蜂花粉系统萃取物中氯仿萃取组分和水萃取组分具有抗炎活性，氯...
钮子茎中石油醚提取物成分的GCMS分析
钮子茎 脂溶性成分 超声提取 GCMS
2009/6/19
［目的］为秦巴山区钮子茎的综合开发利用提供理论依据。［方法］以石油醚为溶剂，采用超声法对秦巴山区野生的钮子茎粉末进行提取，得石油醚提取物，利用GCMS分析对其成分进行分离、鉴定。［结果］从钮子茎的石油醚提取物中分离、鉴定出49种化合物，主要有萜类、脂肪酸、烯醇、烯烃、酚类化合物，占脂溶性成分总量的95.15%。钮子茎的石油醚提取物中相对含量最高的组分是(-)-斯巴醇，为22.07%，其次为棕榈酸...
Analysis of aggregation and disaggregation effects for grid-based hydrological models and the development of improved precipitation disaggregation procedures for GCMs
GCMs hydrological
2009/3/25
Appropriate representation of hydrological processes within atmospheric General Circulation Models (GCMs) is important with respect to internal model dynamics (e.g. surface feedback effects on atmosph...
Constraining the total aerosol indirect effect in the LMDZ and ECHAM4 GCMs using MODIS satellite data
aerosol indirect effect LMDZ ECHAM4 GCMs MODIS satellite data
2009/1/5
Aerosol indirect effects are considered to be the most uncertain yet important anthropogenic forcing of climate change. The goal of the present study is to reduce this uncertainty by constraining two...
本文介绍了岛津公司的新型气相色谱/质谱联用仪GCMS-QP2010,并与该公司的前一代产品GCMS-QP5050A进行了对比。着重介绍了GCMS-QO2010在提高灵敏度、仪器功能和使用范围以及仪器设计上所做的改进,说明GCMS-QQ2010与前代产品GCMS-QP5050A相比确实有较大的提高,同时也表明了我们选购该型号仪器的原因。