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  Analysis of cis-trans fatty acid methyl esters in food Inlet: 250°C, shunt ratio 40:1; Carrier gas: nitrogen, column flow rate 1.0 mL/min; Detector: FID, 260 °C Temperature gradient: 60°C for 1 min, 5 °C/min to 150 °C for 2min, 5 °C/min to 180 °C for 2min, 2°C/min to 200 °C for 10min

  
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  SPME-GC/MS analysis of odors in drinking water Sample: Insert the regret stirrer into a 60ml brown sample bottle, add 10g sodium chloride, add 40ml. After the water sample, add 10ul. Internal standard additive solution (concentration is 40μg/ L2-iso-T-3-methoxypyrazine) and tighten the cap Extraction temperature: 60*C; Extraction time: preheat 1min, extraction 40min; Mixing speed: 900rpm Desorption condition: At 250%: Desorption Smin (probe inserted into injection port)

  
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  Determination of Aflatoxin (AF-G2, G1, B2, B1) in Peanut Oil by Liquid Chromatography with SPME®226 Multifunctional Purification Column Weigh 5g peanut oil sample into 50mL centrifuge tube, add 20mL extract solution (84% acetonitrile-aqueous solution) and mix well. Ultrasonic extraction was performed for 30min, centrifuge (8000r/min) for 20min, and the supernatant was taken as the sample extraction solution.

  
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  Determination of Penicillin in Fruit juice by Liquid Chromatography with SPME®228 Multifunctional Purification Column Weigh the 4g sample into a 50mL centrifuge tube, add 21mL acetonitrile, mix well, centrifuge at 4000 r/min for 10min, take the supernatant, the column passage speed ≤2mL/min.

  
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  SPME-GC/MS Analysis of Flavor Substances in Aged Wine
  Sample: 5 ml old wine sample in 20 ml top empty bottle. Extraction temperature: 50 ºC; Extraction time: 60 min; Mixing speed: 500 rpm. Desorption time: 2 min; Desorption temperature: 250 °C. Sample inlet: GC. Injection method: manual.

  
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  SPME-GCMS Analysis of Flavor Substances in Kiwifruit
  Sample: 2 g kiwi fruit in 20 ml headspace bottle, extraction temperature: 40 ºC; Extraction time: 60 min. Desorption time: 2 min; Desorption temperature: 250 ºC. Sample inlet: GC. Injection method: CTC PAL ALS automatic injector.

  
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  Analysis of 15 phthalate plasticizers in Water Samples by SBSE-GC/MS
  Samples: 20 ml water samples, PAE concentration of 20 ng/ml. Extraction temperature: 25 ºC; Extraction time: 60 min; Mixing speed: 1000 rpm. Desorption solvent: methanol; Solvent desorption time: ultrasonic 15 min. Inlet: 280 ºC (no shunt injection).

  
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  Analysis of Herbicide SBSE-LC/MS/MS in Seawater Samples
  Sample: 50 ml water sample with 10 ng/mL herbicide concentration. Extraction temperature: room temperature; Extraction time: 90 min; Mixing speed: 500 rpm; Desorption solvent: acetone, 300 µl, ultrasonic desorption 20 min. Sample size: 2µl.

  

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