Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Gas Chromatography: Sample Injection Systems01:08

Gas Chromatography: Sample Injection Systems

In gas chromatography, the sample is introduced as a vapor plug into the carrier gas stream for high efficiency and resolution. A microsyringe injects the sample solution into a heated sample port, vaporizing it and mixing it with the carrier gas. This process is important to ensure the sample is properly prepared for analysis. Thermally sensitive samples can be injected directly into the column and volatilized by slowly increasing the column temperature.
Two primary injection methods are used...
Gas Chromatography: Introduction01:13

Gas Chromatography: Introduction

Gas chromatography (GC) is a technique for separating and analyzing volatile compounds in a sample. Its primary purpose is to identify and quantify components in complex mixtures, making it essential in fields such as environmental analysis, pharmaceuticals, and petrochemicals. GC is also called vapor-phase chromatography (VPC) or gas-liquid partition chromatography (GLPC).
In GC,  a sample is vaporized and mixed with an inert carrier gas (the mobile phase), which transports it through a column.
High-Performance Liquid Chromatography: Elution Process01:05

High-Performance Liquid Chromatography: Elution Process

In High-Performance Liquid Chromatography (HPLC), the elution process is critical to the separation of analytes and the quality of chromatographic results. Elution describes how compounds move through the column and separate based on their interactions with the mobile and stationary phases. This process determines the resolution, peak shape, and retention times in the chromatogram, which are essential for identifying and quantifying components in complex mixtures. Understanding the elution...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

A Pathology-Instructed Theranostic Platform with Mechanoadaptive and ROS-Powered Nanobreathing Functions for Precision Myocardial Repair.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)·2026
Same author

Mapping risk and opportunity: A space-based affiliation network analysis of physical and virtual spaces among high risk men.

Journal of acquired immune deficiency syndromes (1999)·2026
Same author

Comparative effectiveness of different inhaler technique education modalities on clinical outcomes in patients with asthma and chronic obstructive pulmonary disease: a protocol for a systematic review and network meta-analysis of randomised controlled trials.

BMJ open·2026
Same author

Preoperative Use of a Mobile Application Within the Multidisciplinary Team Approach - A Randomized Controlled Clinical Trial.

Obesity surgery·2026
Same author

Cyclosporine A protects against wasp venom-induced rhabdomyolysis in rats by inhibiting the CypD-mPTP pathway.

Toxicon : official journal of the International Society on Toxinology·2026
Same author

Evaluating reasoning models for therapy recommendations in gastrointestinal stromal tumors: expert and LLM-based evaluations of OpenAI o1 and DeepSeek-R1.

Journal of cancer research and clinical oncology·2026

Related Experiment Video

Updated: Jun 20, 2026

Fabrication of a Dipole-assisted Solid Phase Extraction Microchip for Trace Metal Analysis in Water Samples
09:42

Fabrication of a Dipole-assisted Solid Phase Extraction Microchip for Trace Metal Analysis in Water Samples

Published on: August 7, 2016

Gas flow headspace liquid phase microextraction.

Cui Yang1, Jinxue Qiu, Chunyan Ren

  • 1Key Laboratory of Nature Resource of the Changbai Mountain and Functional Molecular (Yanbian University), Ministry of Education, Park Road 977, Yanji City, Jilin Province 133002, China.

Journal of Chromatography. A
|September 29, 2009
PubMed
Summary
This summary is machine-generated.

A new gas flow headspace liquid phase microextraction (GF-HS-LPME) technique enhances trace chemical analysis. This method significantly improves detection limits for polycyclic aromatic hydrocarbons compared to traditional HS-LPME.

More Related Videos

A Microfluidic Chip for ICPMS Sample Introduction
11:16

A Microfluidic Chip for ICPMS Sample Introduction

Published on: March 5, 2015

Rapid Collection of Floral Fragrance Volatiles using a Headspace Volatile Collection Technique for GC-MS Thermal Desorption Sampling
05:22

Rapid Collection of Floral Fragrance Volatiles using a Headspace Volatile Collection Technique for GC-MS Thermal Desorption Sampling

Published on: December 10, 2019

Related Experiment Videos

Last Updated: Jun 20, 2026

Fabrication of a Dipole-assisted Solid Phase Extraction Microchip for Trace Metal Analysis in Water Samples
09:42

Fabrication of a Dipole-assisted Solid Phase Extraction Microchip for Trace Metal Analysis in Water Samples

Published on: August 7, 2016

A Microfluidic Chip for ICPMS Sample Introduction
11:16

A Microfluidic Chip for ICPMS Sample Introduction

Published on: March 5, 2015

Rapid Collection of Floral Fragrance Volatiles using a Headspace Volatile Collection Technique for GC-MS Thermal Desorption Sampling
05:22

Rapid Collection of Floral Fragrance Volatiles using a Headspace Volatile Collection Technique for GC-MS Thermal Desorption Sampling

Published on: December 10, 2019

Area of Science:

  • Analytical Chemistry
  • Environmental Science

Background:

  • Microextraction techniques are increasingly used for trace chemical analysis.
  • Headspace liquid phase microextraction (HS-LPME) is an established enrichment method.

Purpose of the Study:

  • To develop a novel Gas Flow Headspace Liquid Phase Microextraction (GF-HS-LPME) technique.
  • To enhance the enrichment factor and improve detection limits for target analytes.

Main Methods:

  • Developed a GF-HS-LPME system utilizing continuous inert gas flow to increase extracting gas phase volume.
  • Optimized parameters including gas flow rate, microdrop position, channel diameter, temperatures, and extraction time.
  • Analyzed four types of polycyclic aromatic hydrocarbons (PAHs).

Main Results:

  • GF-HS-LPME achieved a high enrichment factor.
  • Optimized GF-HS-LPME resulted in detection limits approximately four times lower than conventional HS-LPME.
  • The technique was validated using PAHs from environmental sediment samples.

Conclusions:

  • GF-HS-LPME is a simple and effective technique for trace chemical analysis.
  • The developed method offers superior sensitivity for PAH detection in environmental samples.