- A. A Biphenol A BPA BPA BPA LLE 5 SPE Electrospinning Kang. Packed-fiber solid-phase extraction PFSPE 1 ml

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1 FENXI HUAXUE Chinese Journal of Analytical Chemistry ~ 507 DOI /SP. J A * 2 2 * A ph 6 0 ml ph ml /min. 5 mg μl A ~ μg /L 0. 5 μg /L 4. 5% n = 6 6 A. 0 μg /L 95. 0% A μg /L 6 6 A A Biphenol A BPA BPA 2 BPA 3 4 LLE 5 SPE Electrospinning Kang 2 Packed-fiber solid-phase extraction PFSPE ml No No. BK * q_xu@ 63. com Qian Xu gu@ seu. edu. cn Zhongze Gu

2 BPA BPA 2 2. LC-0AD SPD0-Avp TL phs-2c DW- P403-AC Hitachi S-3000N Tedia 6 M w BPA Sigma. 0 g /L BPA 2. 0% V /V ODS 250 mm 4. 6 mm 5μm Dikma V /V 0. 8 ml /min 230 nm 20 μl V /V 2 h 30% w /V mm 0. 5 ml /h 20 cm 5 kv Taylor 5 ~ 0 h 00 ~ 300 μm Hitachi S-3000N 3A 00 ~ 300 nm cm ml 6 l0 ml 3 ml /min 300 μl N 2 50 μl 2 Fig. Schematic diagram of electrospinning Fig. 2 Solid-membrane extraction device ~ 3. 0 mg A 0. 5 mg. 5 mg

4 6 - A 505. 5 mg 6 RSD = 3. 2% 3.. 2 ph ph BPA 6 ph BPA 6 BPA 6 ph 3 3B ph 4 ~ BPA 4 ph = 8 3 6 ph 8 A ph 3 B 3.. 3 Fig.

3 4 6 - A mg 6 RSD = 3. 2% ph ph BPA 6 ph BPA 6 BPA 6 ph 3 3B ph 4 ~ BPA 4 ph = ph 8 A ph 3 B Fig. 3 Scanning electron microscope images of nylon 6 nanofibrous membrane at ph 8 A at ph 3 B ~ 5 ml /min ml /min 3 ml /min 90. 7% ± 2. % n = 3 3 ml /min ~ 0. 5 ml 20% 50% 80% ml BPA ph Fig. 4 Effect of ph on the recovery of biphenol A BPA BPA 6 0 ml 94. 6% ± 3. 0% n = ~ μg /L r = S /N = μg / L n = 6 3. % 4. 4%. 0 μg /L n = % ± 2. 8% Table Results of determination and recoveries of real water samples spiked with BPA 3. 3 Found Added level RSD Sample Recovery % n = 3 μg /L μg /L 6 ND BPA ND BPA μg /L ND ND Not detected. BPA 3 ~ 5

4 Fig. 5 a. 0 μg /L b c Chromatograms of standard solution a sample spiked with. 0 μg /L b and water sample c for BPA 2 Table 2 Comparison with other s in literatures Quality of Organic solvent RSD LOD μg /L % Recovery % sorbent mg ml Sorbents OASIS- HLB C Bamboo- charcoal References Kavlock R J. Chemosphere ~ HU Xiang-Wei ZHANG Wen-De LIU Yan-Qiao. Chinese J. Foods Science ~ CHEN Su-Qing LIANG Hua-Ding HUANG Wei-Ya HAN De-Man WANG Xi- Mei. Chinese J. Anal. Chem ~ MIAO Jia-Zheng XUE Ming ZHANG Hong. Chinese J. Aanl. Chem ~ 94 5 ZHOU Jian-Ke ZHANG Qian-Li HAN Kang ZHANG Li ZHAO Fei-Bao. Chinese Journal of Science and Technology of Food Industry ~ Cao X L Corriveau J Popovic S Clement G Beraldin F Dufresne G. Agric. Food Chem ~ Grumetto L Montesano D Seccia S Alriizio S Barbato F. Agric. Food Chem ~ McDowall R D. J. Chromatogr. B ~ 58 9 Lu P Ding B. Recent Pat Nanotechnol ~ 82 0 Gibson P Schreuder-Gibson H Rivin D. Colloids and Surface A-Physicochemical and Engineering Aspects 2nd Ed. Princeton Characterization of Porous Materials ~ 48 Kang X J Pan C Xu Q Yao Y F Wang Y Qi D J Gu Z Z. Anal. Chim. Acta ~ 8 2 Qi D J Kang X J Chen L Q Zhang Y Y Wei H M Gu Z Z. Anal. Bioanal. Chem ~ HAN Hao SHAO Bing MA Ya-Lu WU Guo-Hua ZHAO Ying. Chinese Journal of Chromatography ~ WANG Xiao-Dong ZHAO Xin-Hua ZHANG Xin-Bo LI Hong-Xia XUE Yan. Chinese Journal of Analysis Laboratory ~ 29 5 Zhao R S Wang X Yuan J P Zhang L L. Microchim. Acta ~ 447

5 4 6 - A 507 Determination of Bisphenol A in Plastic Bottled Drinking Water by High Performance Liquid Chromatography with Solidmembrane Extraction Based on Electrospun Nylon 6 Nanofibrous Membrane WU Shu-Yan XU Qian * 2 CHEN Tian-Shu WANG Min YIN Xue-Yan ZHANG Ni-Ping SHEN Yan-Yan WEN Zuo-Yang 2 GU Zhong-Ze * 2 School of Public Health Southeast University Nanjing State Key Laboratory of Bioelectronics Southeast University Nanjing Abstract Electrospun nylon 6 nanofibrous membrane based on solid membrane extraction-high performance liquid chromatography SME-HPLC for the determination of bisphenol A BPA in plastic bottled drinking water was performed. Important parameters that effect extraction efficiency such as eluting agent and its volume flow rate of sample sample volume ph of sample quality of the membrane the form of activation and the repeatedly employing of this membrane were optimized. Results indicated that 0 ml of water sample volume with ph of 8. 0 passed through nylon 6 nanofibrous membrane. 5 mg at flow rate of 3. 0 ml /min and only 300 μl eluent methanol was used. Each piece of this membrane would be used at least 6 times. Under the optimized conditions an excellent linear relationship in the range of μg /L with correlation coefficients of determination r was obtained the limits of detection LOD about BPA was 0. 5 μg /L. The repeatabilities RSD intra-membrane and inter-membrane with nylon 6 nanofibrours membrane were all below 4. 5% n = 6. The proposed has been applied to the analysis of plastic bottled purified water of six different brands. Satisfactory spiked recoveries of % were obtained. BPA was lower than μg / L. A comparison among the SME using nylon 6 nanofibrous membrane and other kinds of SPE sorbents used in literatures was carried out. All the results indicated that the nylon 6 nanofiboous membrane has great potential as a novel material for the enrichment and determination of BPA in water sample. Keywords Nylon 6 nanofibrours membrane Solid-membrane extraction Biphenol A Plastic bottled Drinking water High performance liquid chromatography Received 6 July 2009 accepted September 2009 櫋櫋櫋櫋櫋櫋櫋櫋櫋櫋櫋櫋櫋櫋櫋櫋櫋櫋櫋櫋櫋櫋櫋櫋櫋櫋櫋櫋櫋櫋櫋櫋櫋櫋櫋櫋櫋櫋櫋櫋櫋櫋櫋櫋 ~ 9 0 ~

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Matrix solid-phase dispersion MSPD 6 Solid phase extraction SPE 8. Accelerated solvent extraction ASE 3 9 Solid phase microextraction SPME 10 38 2010 1 FENXI HUAXUE Chinese Journal of Analytical Chemistry 1 67 ~ 71 * 361005 - ph 3 1. 0 ~ 200 μg /L LOD S /N = 3 0. 13 ~ 0. 66 μg /L LOQ S /N = 10 0. 44 ~ 2. 19 μg /L 3 37. 8% ~ 101. 1% A 1 Alkylphenols