What detector is ecd?

ecd is an electron capture detector. It is the most sensitive gas chromatography detector and the earliest selective detector. It only detects compounds that can capture electrons, such as halogenated hydrocarbons and N-containing compounds. , O and S and other heteroatom compounds are responsive; due to its high sensitivity and good selectivity, it is also the most widely used radioactive ionization detector and is widely used in biology, medicine, pesticides, environmental protection, and metal chelates and weather tracking.

The operating environment of this tutorial: Windows 7 system, Dell G3 computer.

What kind of detector is ecd?

The electron capture detector (ECD) is the most sensitive gas chromatography detector and the earliest selective detector. It only responds to compounds that can capture electrons, such as halogenated hydrocarbons and compounds containing heteroatoms such as N, O, and S. Because of its high sensitivity and good selectivity, it is also the most widely used radioactive ionization detector. It is widely used in biology, medicine, pesticides, environmental protection, metal chelates and weather tracking and other fields.

Detector introduction

1. ECD came out in 1961. It, FID and chromatographic temperature-programmed analysis are called the three major breakthroughs in the development of chromatography;

2. It is a highly sensitive and highly selective detector, which is particularly sensitive to electronegative substances;

3. The minimum detection amount can reach 10-13 grams (γ-666), and the sensitivity ratio to carbon tetrachloride and n-hexane is 4×108 times;

4. It is mainly used to analyze and determine electronegative substances such as halides, phosphorus (sulfur) compounds, peroxides, nitro compounds, metal organic compounds, metal chelates, steroid compounds, polycyclic aromatic hydrocarbons and conjugated hydroxyl compounds. In addition, it can also analyze 1ppm oxygen;

5. Use chemical conversion methods to make derivatives with strong electronegative properties to expand the scope of use of electron capture detectors;

6. ECD has become one of the most widely used detectors in the fields of food inspection, pesticide residues in animals (plants) and environmental testing (water, soil, air pollution, etc.).

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