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Table 2 Electronic nose sensor name and corresponding substance

From: Analysis of forage quality, volatile organic compounds and metabolic pathways in alfalfa (Medicago sativa L.) at different stages based on electronic nose and GC-MS

Serial number

Sensor name

Performance description

1

W1C

Aromatic component

2

W5S

High sensitivity, very sensitive to nitrogen oxides

3

W3C

Ammonia, sensitive to aromatic components

4

W6S

Mainly selective for hydrogen

5

W5C

Aromatic component of alkane

6

W1S

Sensitive to methyl groups

7

W1W

Sensitive to terpenes and inorganic sulfides

8

W2S

Sensitive to alcohols, aldehydes and ketones

9

W2W

Aromatic component sensitive to organic sulfides

10

W3S

Sensitive to alkanes