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Related Concept Videos

High-Performance Liquid Chromatography: Instrumentation00:57

High-Performance Liquid Chromatography: Instrumentation

High-performance liquid chromatography, or HPLC, is an analytical technique that separates liquid samples under high pressures. An HPLC instrument consists of glass bottles for storing solvents called mobile phase reservoirs. HPLC-grade solvents are used to maintain high purity, and the dissolved gases are removed using a degasser, such as a vacuum pumping system or sparging with helium. The solvents are then pumped into the analytical column using a screw-driven syringe or reciprocating pumps.
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...
High-Performance Liquid Chromatography: Types of Detectors01:15

High-Performance Liquid Chromatography: Types of Detectors

The role of the detectors in High-Performance Liquid Chromatography (HPLC) is to analyze the solutes as they exit from the chromatographic column. The detector recognizes the solute's property and generates corresponding electrical signals, which are converted into a readable graph of the detector's response versus elution time called a chromatogram at the computer. There are several types of HPLC detectors, each with its own advantages and limitations, depending on the analyte properties and...
High-Performance Liquid Chromatography: Introduction01:11

High-Performance Liquid Chromatography: Introduction

High-performance liquid chromatography(HPLC), formerly referred to as High-pressure liquid chromatography, is a powerful technique used to separate, identify, and quantify components in complex mixtures. The term "high pressure" refers to using high pressure to push the liquid mobile phase through the tightly packed columns.
In HPLC, two phases play a critical role in the separation process:
Two Components: Liquid–Liquid Systems01:27

Two Components: Liquid–Liquid Systems

A pressure-composition phase diagram explicitly describes the behavior of an ideal solution of two volatile liquids under varying pressures and compositions. A pressure-composition diagram has two main curves. The bubble point curve represents the plot of pressure versus liquid mole fraction. It indicates the pressure at which the first bubble of vapor forms from the liquid phase as the system pressure decreases.The dew point curve is the pressure versus vapor mole fraction. It indicates the...

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Automated HPLC Separation Using LC-Mate: An Integrated Repetitive Autosampler and Fraction Collector for Microscale Purification
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A fully automated liquid-liquid extraction system utilizing interface detection.

E Maslana1, R Schmitt, J Pan

  • 1Abbott Laboratories, Abbott Park, IL, USA.

Journal of Automated Methods & Management in Chemistry
|October 18, 2008
PubMed
Summary
This summary is machine-generated.

This study presents an automated liquid-liquid extraction station for drug discovery, enhancing throughput for synthesizing organic compounds. The system efficiently separates aqueous and organic phases using advanced detection and mixing techniques.

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Area of Science:

  • Chemical Engineering
  • Analytical Chemistry
  • Drug Discovery Automation

Background:

  • Automated systems are crucial for high-throughput screening in drug discovery.
  • Traditional liquid-liquid extraction methods can be time-consuming and labor-intensive.
  • Need for efficient extraction of newly synthesized organic compounds.

Purpose of the Study:

  • To develop and characterize an automated liquid-liquid extraction station.
  • To improve sample throughput for aqueous extraction of organic compounds.
  • To integrate phase interface detection with automated fluid extraction.

Main Methods:

  • Utilized a cylindrical laboratory robot for sample vial manipulation.
  • Employed refractive index difference for phase interface detection.
  • Implemented high-speed solvent injection for sample mixing.
  • Used centrifugation to minimize emulsions.
  • Developed user-programmable wash protocols with multiple solvents.

Main Results:

  • The system successfully automates aqueous extraction for drug discovery.
  • Achieved high sample throughput by integrating interface detection and fluid extraction.
  • Demonstrated effectiveness with ethyl acetate and methylene chloride based chemistries.
  • Station capacity of eighty 15 ml vials.

Conclusions:

  • The automated extraction system significantly enhances efficiency in processing synthesized organic compounds.
  • The developed technology is robust and applicable to diverse chemical applications.
  • This automation represents a key advancement in drug discovery workflows.