Determination of N-nitrosodiethanolamine in cosmetic products by headspace solid phase microextraction using a novel aluminum hydroxide grafted fused silica fiber followed by gas chromatography-mass spectrometry analysis

► We introduce a new SPME fiber preparation method based on aluminum grafting process. ► Grafted Al-fused silica was applied for extraction of NDELA from cosmetic products. ► Al provides acidic sites which can effectively interact with basic sites of NDELA. ► The method is more simple, fast and efficient than other developed methods.