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搜索结果: 1-15 共查到gas chromatography相关记录51条 . 查询时间(0.083 秒)
Sichuan dark brick tea (Camellia sinensis) and Sichuan Fuzhuan brick tea have signifcantly diferent aroma characteristics although both of them have almost the same processing methods. Thus, these two...
This paper describes the modification of an existing gas chromatographic (GC) method to incorporate simultaneous mass spectrometric (MSD) and flame ionization detection (FID) into the analysis of toba...
This report describes a validation data of 279 pesticides using a multiresidue method by LC-MS/MS and GC-MS/MS in avocado and almond.
This report describes a validation data of 86 pesticides using a multiresidue method by LC-MS/MS and GC-MS/MS in green tea, red tea, black tea and chamomile.
Headspace solid phase microextraction and purge and trap analysis were used for the determination of volatiles in beer. These methods were compared with the analysis of unconcentrated gas phase and li...
Twenty-two pesticides and metabolites, selected on the basis of regional priority lists, were surveyed in thirty Italian mineral waters springs for three years by a procedure based on solid phase extr...
Since 1980s, several methods for the determination of lignans in food samples have been developed depending on the types of lignans and foods analysed, but mostly on flaxseed as a reference food. In t...
A two-phase hollow-fiber (HF) liquid-phase microextraction (LPME) method followed by gas chromatography was developed for quantification of 8 major polybrominated diphenyl ethers at trace level in sew...
Surface derivatization of Kevlar, poly(p-phenylene terephthalamide), fiber has been studied along with the evaluation of the surface characteristics of the chemically-modified fiber as the stationary ...
Gas chromatography/resonance-enhanced multiphoton ionization/time-of-flight mass spectrometry (GC/REMPI-TOFMS) using an ultraviolet nanosecond laser was employed in the trace analysis of polycyclic ar...
Novel packed-capillary columns for gas chromatography were developed with a thin-wall stainless-steel capillary of 1.0 mm i.d.; and rapid temperature-programmed separations have been carried out after...
A new and simple gas chromatographymass spectrometry (GC-MS) method has been developed for simultaneous determination of estradiol valerate (EV) and medroxyprogesterone acetate (MPA) in a tablet form...
An analytical method for the simultaneous determination of 12 pyrethroids in soil samples was developed using gas chromatography tandem quadrupole mass spectrometry. Pyrethroids were extracted by pre...
介绍了一种SF6新气痕量杂质气相色谱分析的新方法。与DL/T 920—2005《六氟化硫中空气、四氟化碳的气相色谱分析方法》相比较,新方法可以从SF6新气中检出更多的痕量杂质,甚至多达17种,且方法高度智能化并便于普及。考虑到SF6新气中某些杂质会影响有关电力设备的使用寿命,提出了电力行业SF6新气推荐标准的方案。
The influence of seawater salts as salting out agents on the purge-and-trap gas chromatography (PT-GC) determination of trihalomethanes (THMs) was studied. This is particularly important since seawate...

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