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LCGC North America-05-01-2004
LCGC North America
Speed & Sensitivity: GC and GC?MS Solutions 2004 by Thermo Electron
May 04, 2004
22
5
Speed & Sensitivity: GC and GC?MS Solutions 2004 by Thermo Electron
May 04, 2004
22
5
Speed & Sensitivity: GC and GC?MS Solutions 2004 by Thermo Electron
May 04, 2004
22
5
Speed & Sensitivity: GC and GC?MS Solutions 2004 by Thermo Electron
May 04, 2004
22
5
System Suitability
May 01, 2004
LC Troubleshooting
22
5
Sounds simple, but what is required?
New GC Instruments and Accessories at the 55th Pittsburgh Conference
May 01, 2004
GC Connections
22
5
In this month's "GC Connections," John Hinshaw reports on new gas chromatography instruments and accessories exhibited at the 55th Pittsburgh Conference.
More Speed, Better Precision, Higher Sensitivity: Why Buy a New Gas Chromatograph?
April 30, 2004
MILESTONES IN CHROMATOGRAPHY
22
5
Developments in gas chromatography instrumentation, columns, and performance during the past 10 years.
Rapid Determination of Terpene Lactones in Ginkgo Biloba Commercial Products by HPLC with Evaporative Light-Scattering Detection
April 30, 2004
Article
22
5
This article presents a rapid, sensitive, and reproducible HPLC gradient method for the measurement of ginkgolides A, B, C, and J, along with bilobalide, in Ginkgo biloba commercial products.
*** TEST *** Estimation of the Main Sources of Uncertainty in Chromatographic Analysis: Determination of Biogenic Amines ***TEST ***
January 01, 2004
22
5
This article establishes the estimation of the uncertainty associated with the chromatographic determination of biogenic amines. The authors identify and estimate each source of uncertainty to establish the accuracy of results and to obtain a better understanding of the method. Thus, measurement uncertainty was split into two sections: uncertainty related to the working conditions, which considers the equipment used, and inherent uncertainty, which includes the chemical stages indicated in the procedure as well as calibration sources, taking into account the existence of the matrix effect. Recovery studies also were made to quantify the contribution of bias to the overall uncertainty. This parameter was calculated for the determination of biogenic amines in different types of samples.