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Related Concept Videos

Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation01:26

Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation

Inductively coupled plasma (ICP) is the common plasma source used in atomic emission spectroscopy (AES), a technique that detects and analyzes various elements in a sample. This method is often called inductively coupled plasma atomic emission spectroscopy (ICP-AES).
There are three main types of inductively coupled plasma atomic emission spectroscopy  (ICP-AES) instruments: sequential, simultaneous multichannel, and Fourier transform instruments, with the latter being less commonly used.
Carrier Transport01:21

Carrier Transport

The generation of electrical current in semiconductors is fundamentally driven by two mechanisms: drift and diffusion. These processes are essential for the functionality and performance of semiconductor-based devices.
Drift Current:
The drift of charge carriers is started by an external electric field (E). Charged particles, such as electrons and holes, experience an acceleration between collisions with lattice atoms. For electrons, this results in a drift velocity (vd) given by:
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.
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Inductively Coupled Plasma Atomic Emission Spectroscopy: Principle01:19

Inductively Coupled Plasma Atomic Emission Spectroscopy: Principle

Inductively coupled plasma (ICP) is the most widely used plasma source in atomic emission spectroscopy (AES), also known as Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES). The ICP source, or torch, consists of three concentric quartz tubes with argon gas flowing through them. A spark from a Tesla coil initiates the ionization of argon, generating a high-temperature plasma.
The ions and electrons produced interact with the fluctuating magnetic field created by a water-cooled...
Mass Analyzers: Overview01:13

Mass Analyzers: Overview

The mass analyzer is a crucial component of the mass spectrometer. In the ionization chamber, the vaporized sample is bombarded with a high-energy electron beam to generate a radical cation and further fragment into neutral molecules, radicals, and cations. A series of negatively charged accelerator plates accelerate the cations into the mass analyzer. The mass analyzer separates ions according to their mass-to-charge (m/z) ratios and then directs them to the detector. The common types of mass...
Multi-input and Multi-variable systems01:22

Multi-input and Multi-variable systems

Cruise control systems in cars are designed as multi-input systems to maintain a driver's desired speed while compensating for external disturbances such as changes in terrain. The block diagram for a cruise control system typically includes two main inputs: the desired speed set by the driver and any external disturbances, such as the incline of the road. By adjusting the engine throttle, the system maintains the vehicle's speed as close to the desired value as possible.
In the absence of...

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The Use of an Automated System (GreenFeed) to Monitor Enteric Methane and Carbon Dioxide Emissions from Ruminant Animals
11:02

The Use of an Automated System (GreenFeed) to Monitor Enteric Methane and Carbon Dioxide Emissions from Ruminant Animals

Published on: September 7, 2015

An air-carrier continuous analysis system.

K Petersen1, P K Dasgupta

  • 1Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, TX 79409-1061, U.S.A.

Talanta
|January 1, 1989
PubMed
Summary
This summary is machine-generated.

A new air-carrier continuous analysis system (ACCAS) enables high-throughput sample analysis with minimal waste. This system complements existing flow analysis techniques, offering efficient reagent and sample handling.

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Area of Science:

  • Analytical Chemistry
  • Chemical Engineering
  • Biotechnology

Background:

  • Continuous flow analysis methods like SCFA and FIA are widely used.
  • There is a need for analytical systems with higher throughput and reduced waste generation.

Purpose of the Study:

  • To introduce a novel air-carrier continuous analysis system (ACCAS).
  • To demonstrate ACCAS's capability as a complement to existing flow analysis techniques.
  • To highlight ACCAS's performance in terms of throughput and waste generation.

Main Methods:

  • Development of an air-carrier continuous analysis system (ACCAS).
  • The system allows for precise reaction of fixed sample volumes with fixed reagent volumes.
  • Reactions can be performed simultaneously or sequentially.

Main Results:

  • ACCAS achieves high throughput rates of approximately 3600 samples per hour.
  • The system demonstrates significantly low waste generation.
  • ACCAS is compatible with and complements SCFA and FIA.

Conclusions:

  • ACCAS offers a promising advancement in continuous flow analysis.
  • The system provides a high-throughput, low-waste alternative for various analytical applications.
  • ACCAS represents a valuable addition to the field of automated chemical analysis.