摘要
本文建立了纤维制品中游离甲醛的固相萃取-气质联用测定方法。试样剪碎后置于饱和NaCl溶液中60℃超声处理30min，经五氟苯盐酸羟胺（PFBOA）衍生化后，采用顶空固相微萃取和色质联用技术（HS-SPME—GC／MS），选择离子（m／z181）进行定量。该方法适用于各类单层或多层纤维织物中甲醛的测定，加标回收率分别为94．9％～98．7％，相对标准偏差（RSD）在2．97％～4．59％之间，检出限为0．02mg／kg。
A method has been developed for determination of formaldehyde in fibre products by GC-MS using headspace solid phase extraction. Samples were treated with 1 mg/mL o-（2, 3, 4, 5, 6- Pentafluorobenzyl） hydroxylamine （PFBOA） in a sealed vial at 60℃ for 30 min. Headspace solid-phase microextraction （SPME） was then performed with 65 μm PDMS/DVB, and the extracts were directly analyzed by gas chromatography/mass spectrometry （GC/MS） under selective ion method （SIM） mode. This headspace SPME GC/MS method was highly sensitive to the target compound because it eliminates interference from the sample matrix solution. The limits of detection were 0. 02 mg/kg with average recoveries between 94.9%-98.7% at the different spiking levels. The relative standard deviation （RSD） of the method for the spiked samples was 2. 97%- 4.59%.
出处
《分析科学学报》
CAS
CSCD
2006年第6期693-696,共4页
Journal of Analytical Science
