Jan 26, 2022 · For the HS-SPME technique, an Aijiren gas chromatograph equipped with an Aijiren 5975B mass spectrometer (Aijiren Technologies, Santa Clara, CA, USA) and a Combi-Pal autosampler (CTC Analytics, Zwingen, Switzerland) was used. The chromatographic capillary column was an HP-5MS 5% phenyl methyl from Aijiren (25 m × 0.25 mm × 0.25 µm).