title: One-step microwave-assisted headspace solid-phase microextraction for the rapid determination of synthetic polycyclic musks in oyster by gas chromatography-mass spectrometry.
abstract: A rapid, simple and solvent-free procedure was developed for the determination of synthetic polycyclic musks in oyster samples by using one-step microwave-assisted headspace solid-phase microextraction (MA-HS-SPME) and gas chromatography-mass spectrometry (GC-MS). Two commonly used synthetic polycyclic musks, galaxolide (HHCB) and tonalide (AHTN), were selected in the method development and validation. The parameters (microwave irradiation power, extraction time, amount of water added, pH value and addition of NaCl) affecting the extraction efficiency of analytes from oyster slurry were systematically investigated and optimised. The best extraction conditions were achieved when the oyster tissue mixed with 10-mL deionised water (containing 3g of NaCl in a 40-mL sample-vial) was microwave irradiated at 80 W for 5 min. The limit of quantification (LOQ) was 0.1 ng/g in 5-g of wet tissue. The good precision and accuracy of one-step MA-HS-SPME coupled with GC-MS for the determination of trace level of AHTN in oyster samples was also demonstrated.
authors: Department of Chemistry, National Central University, Chung-Li 320, Taiwan.
authors: Shin-Fang
authors: SF
authors: Wu
authors: Institute of Marine Biology, National Sun Yat-sen University, Kaohsiung 804, Taiwan.
authors: Li-Lian
authors: LL
authors: Liu
authors: Department of Chemistry, National Central University, Chung-Li 320, Taiwan. Electronic address: wding0224@yahoo.com.tw.
authors: Wang-Hsien
authors: WH
authors: Ding
mesh_terms: D000818:Animals; D005229:Fatty Acids, Monounsaturated / Q000302:isolation & purification*; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods*; D010125:Ostreidae / Q000737:chemistry*; D052617:Solid Phase Microextraction / Q000379:methods*
chemical_list: D005229:Fatty Acids, Monounsaturated; C008563:musk
keywords: GC–MS; Microwave-assisted headspace solid-phase microextraction; Oyster analysis; Synthetic polycyclic musks