Figure 1From: Exhaled volatile organic compounds in patients with non-small cell lung cancer: cross sectional and nested short-term follow-up studyBreath collection and VOC extraction. The subjects performed a single slow vital capacity into a TeflonĀ® bulb (Bio-VOCĀ® breath sampler) (a) which traps the last portion of exhaled air (150 mL); the VOCs were extracted by directly inserting a 75 mm Carboxen/PDMS SPME fiber (30 min) into the bulb (b).Back to article page