Hplc Gc-ms Analysis
Hplc Gc-ms Analysis - Related Videos
09:22
Gas Chromatography (GC) with Flame-Ionization Detection
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2023
Source: Laboratory of Dr. B. Jill Venton - University of Virginia Gas chromatography (GC) is used to separate and detect small molecular weight compounds in the gas phase. The sample is either a gas or a liquid that is vaporized in the injection port. Typically, the compounds analyzed are less than 1,000 Da, because it is difficult to vaporize larger compounds. GC is popular for environmental monitoring and industrial applications because it is very reliable and can be run nearly continuously.
10:09
A Straightforward Method for Glucosinolate Extraction and Analysis with High-pressure Liquid Chromatography (HPLC)
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Cited by 112 •
2017
Here, we describe in great detail an established and robust protocol for the extraction of glucosinolates from ground plant materials. After an on-column sulfatase treatment of the extracts, the desulfoglucosinolates are eluted and analyzed by high-pressure liquid chromatography.
12:58
High-Performance Liquid Chromatography (HPLC)
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2023
Source: Dr. Paul Bower - Purdue University High-performance liquid chromatography (HPLC) is an important analytical method commonly used to separate and quantify components of liquid samples. In this technique, a solution (first phase) is pumped through a column that contains a packing of small porous particles with a second phase bound to the surface. The different solubilities of the sample components in the two phases cause the components to move through the column with different average...
12:49
Mutagenesis and Analysis of Genetic Mutations in the GC-rich KISS1 Receptor Sequence Identified in Humans with Reproductive Disorders
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Cited by 3 •
2011
Mutations in the kisspeptin receptor (KISS1R) are associated with reproductive disorders in patients. Here we describe how to introduce mutations of interest in the GC-rich sequence of KISS1R as well as the use of KISS1R constructs to characterize the degradation pathway of the receptor by immunoprecipitation and western blot.
09:10
An Efficient and Rapid HPLC-QQQ-MS Method for the Quantitation of Tropane Alkaloids in Medicinal Plants
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2026
This study developed a high-performance liquid chromatography coupled with triple quadrupole mass spectrometry (HPLC-QQQ-MS) method to identify and quantify tropane alkaloids (hyoscyamine, anisodamine, scopolamine) in Anisodus tanguticus. The method proved rapid, accurate, and reliable for high-throughput analysis of medicinal plants.
FAQs
In HPLC, compounds move through a flowing liquid while interacting differently with the stationary phase. These differences determine how long each dissolved component remains in the system and when it emerges for subsequent analysis. Because retention depends on these interactions, the resulting separation helps distinguish components in complex samples before further characterization.
Gas chromatography requires analytes that can be vaporized and resolved in a capillary column. Compounds that meet this suitability condition can be separated according to their behavior during vaporization and passage through the column. This stage adds a distinct separation dimension, helping resolve chemical components that may remain difficult to distinguish using liquid chromatography alone.
Mass spectrometry ionizes separated molecules and measures their mass-to-charge ratios. The resulting spectra provide patterns that support chemical identification, while the associated measurements can contribute to quantifying components. Applying this information to separated fractions or signals helps connect molecular composition with the concentration-related data needed for analysis of complex biological and engineered samples.
The methods contribute complementary separation information because HPLC distinguishes dissolved compounds through interactions with a stationary phase and flowing liquid, whereas GC resolves suitable vaporized analytes in a capillary column. Using these distinct separation behaviors alongside mass-spectral measurements can improve characterization of complex samples and provide a broader compositional view than one approach alone.
The workflow begins by separating sample components with chromatographic methods selected for the compounds being examined. Suitable analytes undergo gas-chromatographic resolution, and separated molecules are then examined by mass spectrometry through ionization and mass-to-charge measurement. Researchers interpret the resulting spectra and quantitative data to characterize composition, compare samples, or evaluate engineered biological systems.
In bioengineering, the approach can characterize metabolites, pharmaceuticals, biomaterials, and products generated during bioprocesses. The resulting compositional and quantitative information supports quality control, pathway analysis, process optimization, and evaluation of engineered biological systems. Its value lies in linking measured chemical profiles with the performance and development of biological or bioprocess designs.