title: Porous lead(II)-based metal organic nanotubes as an adsorbent for dispersive solid-phase extraction of polybrominated diphenyl ethers from environmental water samples.
abstract: Porous lead(II)-based metal-organic nanotubes (Pb-MONTs) were, for the first time, used as an adsorbent for dispersive solid-phase extraction (d-SPE) of polybrominated diphenyl ethers (PBDEs) at trace levels from environmental water samples. Gas chromatography-negative chemical ionization-mass spectrometry (GC-NCI-MS) was applied for sample detection. Box-Behnken design was performed to investigate and optimize the d-SPE parameters through a response surface methodology. The optimized conditions were obtained as listed: extraction time of 1min, 51.4mg of adsorbent and NaCl concentration of 7.42%. Under the optimized conditions, the new d-SPE-GC-NCI-MS method achieved wide range of linearity (2-1000ngL(-1)), low limits of detection (0.08-0.22ngL(-1)), satisfactory repeatability (0.79-8.62%, n=6) and satisfactory reproducibility (3.18-11.0%, n=5), and the possible extraction mechanism was also discussed. The proposed method was used in the analysis of real environmental water samples, and satisfactory recoveries were obtained in the range of 80.5-119.2%. These results indicated that Pb-MONTs have great potential as an adsorbent for the d-SPE of PBDEs at trace levels from environmental water samples.
authors.affiliation: Key Laboratory for Applied Technology of Sophisticated Analytical Instruments of Shandong Province, Analysis and Test Center, Shandong Academy of Sciences, Jinan 250014, China; School of Environmental Science, Engineering, Wuhan University of Technology, Wuhan 430070, China.
authors.forename: Xiao-Kun
authors.initials: XK
authors.lastname: She
authors.affiliation: Key Laboratory for Applied Technology of Sophisticated Analytical Instruments of Shandong Province, Analysis and Test Center, Shandong Academy of Sciences, Jinan 250014, China.
authors.forename: Xia
authors.initials: X
authors.lastname: Wang
authors.affiliation: School of Environmental Science, Engineering, Wuhan University of Technology, Wuhan 430070, China.
authors.forename: Jia-Bin
authors.initials: JB
authors.lastname: Zhou
authors.affiliation: Key Laboratory for Applied Technology of Sophisticated Analytical Instruments of Shandong Province, Analysis and Test Center, Shandong Academy of Sciences, Jinan 250014, China. Electronic address: zhaors1976@126.com.
authors.forename: Ru-Song
authors.initials: RS
authors.lastname: Zhao
mesh_terms: D004784:Environmental Monitoring / Q000379:methods*; D008401:Gas Chromatography-Mass Spectrometry; D055768:Halogenated Diphenyl Ethers / Q000032:analysis / Q000302:isolation & purification*; D007854:Lead / Q000737:chemistry*; D043942:Nanotubes / Q000737:chemistry*; D016062:Porosity; D015203:Reproducibility of Results; D052616:Solid Phase Extraction / Q000379:methods*
chemical_list: D055768:Halogenated Diphenyl Ethers; D007854:Lead
keywords: Dispersive solid-phase extraction; Gas chromatography–mass spectrometry; Metal-organic nanotubes; Polybrominated diphenyl ethers; Water samples