The photocopy toners were collected and analyzed with pyrolysis gas chromatography (Py-GC) and Py-GC/mass spectrometry.

• 采用裂解气相色谱技术,对收集到的复印墨粉进行分离分析,并用裂解气相色谱/质谱联用技术,对所得裂解峰进行归属。