Table 1 Overview of the analyzed samples, number of replicates, sampling method by Makarow et al.30,31 and the sampling description.

From: Multivariate evaluation method for the detection of pest infestations on plants via VOC analysis using gas chromatography mass spectrometry

Sample

No. measurements

Sampling method

Description sampling method (Makarow et al.30,31)

HT

29

On the trunk

Trunk was wrapped in Nalophan foil

Staples and tension belts were used for closing the foil

Self-built adapter was used to adapt adsorbent tubes on the foil

Pump was used to trap VOCs from the trunk on adsorbent tubes

ALB

16

On the trunk

See description HT

SC

17

Headspace-vial; on the trunk

Larvae were put into a 20 mL headspace vial

Adsorbent tubes were put through the septum of the vial

Pump was used to trap VOCs from larvae on the adsorbent tubes

See description HT

CC

12

Headspace-vial

See description SC