How does the electron capture detector work?

How does GC-ECD work? When a gas is passed through the ECD, some electrons of certain molecules which pass through the detector are captured and the current being measured reduces, which results in a positive peak being recorded.

What is the application of electron capture detector?

An electron capture detector (ECD) is a device for detecting atoms and molecules in a gas through the attachment of electrons via electron capture ionization. The device was invented in 1957 by James Lovelock and is used in gas chromatography to detect trace amounts of chemical compounds in a sample.

Is electron capture detector universal?

Some detectors are sensitive only to specific types of chemical compounds, whereas others are considered “universal” in that they are capable of detecting almost everything. Detectors also vary in their limits of detection. As a general rule, the more selective the detector, the greater its sensitivity.

How is an electron capture detector ( ECD ) used?

An electron capture detector (ECD) is a device used in a gas chromatograph to detect trace amounts of chemical compounds in a sample. Typically, it contains a 10 milli-curie nickel (Ni-63) metal foil. Chromatography is a set of laboratory techniques for the separation of mixtures.

Which is the best electron capture detector for GC?

Typical detectors used in GC include flame ionization detectors (FIDs), thermal conductivity detectors (TCDs), thermionic detectors (TIDs), electron capture detectors (ECDs), and atomic emission detectors (AEDs) (Skoog and Leary, 1992a,b,c,d; Scott, 2003a,b,c ). The most widely used and generally applicable detector is the FID.

How are electron capture detectors used in gas chromatograph?

An electron capture detector (ECD) is a device used in a gas chromatograph to detect trace amounts of chemical compounds in a sample.

How to install an Agilent electron capture detector?

21 Installation 21 Venting your ECD 22 Storing your ECD 22 6 Information for General Licensees