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¿ÉÒÔ¼ûËùµÃµ½ÁË£¬¼ìË÷ºÅºÃÏñÒª¼ìË÷»ú¹¹³ö¾ßµÄ¡£ ÕâÊÇÈ«²¿¼ìË÷ÄÚÈÝ IL-USA-DLLME Method to Simultaneously Extract and Determine Four Phenylurea Herbicides in Water Samples ×÷Õß: Wang, SL (Wang, Suli)1,2; Liu, CY (Liu, Congyun)1; Liu, FM (Liu, Fengmao)1; Ren, LP (Ren, Liping)1 À´Ô´³ö°æÎï: CURRENT ANALYTICAL CHEMISTRY ¾í: 7 ÆÚ: 4 Ò³: 357-364 ³ö°æÄê: OCT 2011 ±»ÒýƵ´Î: 0 (À´×Ô Web of Science) ÒýÓõIJο¼ÎÄÏ×: 34 [ ²é¿´ Related Records ] ÒýÖ¤¹ØÏµÍ¼ ÕªÒª: An ionic-liquid ultrasound-assisted dispersive liquid-liquid microextraction method (IL-USA-DLLME) was introduced to determine four phenylurea herbicides (i.e., isoproturon, monolinuron, linuron, and diuron) in water samples with high performance liquid chromatography (HPLC). The ionic liquid of 1-hexyl-3-methylimidazolium hexafluorophosphate [HMIMPF6] was dispersed into the aqueous sample solution in fine droplets by ultrasound and was used as the extraction solvent; the phenylurea herbicides were concentrated into the ionic liquid phase. The extraction conditions, such as the volume of the extraction solvent, sonication and centrifugation time, ionic strength, and the emulsification-extraction temperature, were optimized. Under the optimized conditions, the linear correlation coefficient ranged from 0.9954 to 0.9969 for concentration levels of 2-100 mu gL(-1). The good recovery (68-100%) of target analytes was obtained from the water samples. The relative standard deviations (RSDs, n=6) ranged from 2.3-9.5%, and the limits of detection (LODs) for the herbicides were between 0.10 mu gL(-1) and 0.24 mu gL(-1). The applicability of the proposed method was evaluated by the extraction and determination of phenylurea herbicides from several natural water samples. Èë²ØºÅ: WOS:000300354500011 ÎÄÏ×ÀàÐÍ: Article ÓïÖÖ: English ×÷Õ߹ؼü´Ê: IL-USA-DLLME; Phenylurea herbicides; Water samples; HPLC KeyWords Plus: LIQUID-LIQUID MICROEXTRACTION; ULTRASOUND-ASSISTED EMULSIFICATION; ATOMIC-ABSORPTION-SPECTROMETRY; POLYCYCLIC AROMATIC-HYDROCARBONS; CHROMATOGRAPHY-MASS SPECTROMETRY; SOLID-PHASE MICROEXTRACTION; GAS-CHROMATOGRAPHY; ORGANOPHOSPHORUS PESTICIDES; FLAME RETARDANTS; SENSITIVE METHOD ͨѶ×÷ÕßµØÖ·: Liu, FM (ͨѶ×÷Õß),China Agr Univ, Beijing 100193, Peoples R China µØÖ·: 1. China Agr Univ, Beijing 100193, Peoples R China 2. Hebei North Univ, Zhangjiakou 075131, Peoples R China µç×ÓÓʼþµØÖ·: lfm2000@cau.edu.cn »ù½ð×ÊÖúÖÂл: »ù½ð×ÊÖú»ú¹¹ ÊÚȨºÅ 40th Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry Natural Science Foundation of Hebei Province B2011405007 [ÏÔʾ»ù½ð×ÊÖúÐÅÏ¢][Òþ²Ø»ù½ð×ÊÖúÐÅÏ¢] The authors acknowledge the financial support from the 40th Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry and the Natural Science Foundation of Hebei Province (No. B2011405007). ³ö°æÉÌ: BENTHAM SCIENCE PUBL LTD, EXECUTIVE STE Y26, PO BOX 7917, SAIF ZONE, 1200 BR SHARJAH, U ARAB EMIRATES Web of Science ·ÖÀà: Chemistry, Analytical ѧ¿ÆÀà±ð: Chemistry IDS ºÅ: 893KJ ISSN: 1573-4110 |
4Â¥2012-03-26 09:08:18
wanyue1111
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2Â¥2012-03-26 08:59:26
yx114
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FN Thomson Reuters Web of Knowledge VR 1.0 PT J AU Wang, SL Liu, CY Liu, FM Ren, LP AF Wang, Suli Liu, Congyun Liu, Fengmao Ren, Liping TI IL-USA-DLLME Method to Simultaneously Extract and Determine Four Phenylurea Herbicides in Water Samples SO CURRENT ANALYTICAL CHEMISTRY LA English DT Article DE IL-USA-DLLME; Phenylurea herbicides; Water samples; HPLC ID LIQUID-LIQUID MICROEXTRACTION; ULTRASOUND-ASSISTED EMULSIFICATION; ATOMIC-ABSORPTION-SPECTROMETRY; POLYCYCLIC AROMATIC-HYDROCARBONS; CHROMATOGRAPHY-MASS SPECTROMETRY; SOLID-PHASE MICROEXTRACTION; GAS-CHROMATOGRAPHY; ORGANOPHOSPHORUS PESTICIDES; FLAME RETARDANTS; SENSITIVE METHOD AB An ionic-liquid ultrasound-assisted dispersive liquid-liquid microextraction method (IL-USA-DLLME) was introduced to determine four phenylurea herbicides (i.e., isoproturon, monolinuron, linuron, and diuron) in water samples with high performance liquid chromatography (HPLC). The ionic liquid of 1-hexyl-3-methylimidazolium hexafluorophosphate [HMIMPF6] was dispersed into the aqueous sample solution in fine droplets by ultrasound and was used as the extraction solvent; the phenylurea herbicides were concentrated into the ionic liquid phase. The extraction conditions, such as the volume of the extraction solvent, sonication and centrifugation time, ionic strength, and the emulsification-extraction temperature, were optimized. Under the optimized conditions, the linear correlation coefficient ranged from 0.9954 to 0.9969 for concentration levels of 2-100 mu gL(-1). The good recovery (68-100%) of target analytes was obtained from the water samples. The relative standard deviations (RSDs, n=6) ranged from 2.3-9.5%, and the limits of detection (LODs) for the herbicides were between 0.10 mu gL(-1) and 0.24 mu gL(-1). The applicability of the proposed method was evaluated by the extraction and determination of phenylurea herbicides from several natural water samples. C1 [Wang, Suli; Liu, Congyun; Liu, Fengmao; Ren, Liping] China Agr Univ, Beijing 100193, Peoples R China. [Wang, Suli] Hebei North Univ, Zhangjiakou 075131, Peoples R China. RP Liu, FM (reprint author), China Agr Univ, Beijing 100193, Peoples R China EM lfm2000@cau.edu.cn FU 40th Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry; Natural Science Foundation of Hebei Province[B2011405007] FX The authors acknowledge the financial support from the 40th Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry and the Natural Science Foundation of Hebei Province (No. B2011405007). NR 34 TC 0 Z9 0 PU BENTHAM SCIENCE PUBL LTD PI SHARJAH PA EXECUTIVE STE Y26, PO BOX 7917, SAIF ZONE, 1200 BR SHARJAH, U ARAB EMIRATES SN 1573-4110 J9 CURR ANAL CHEM JI Curr. Anal. Chem. PD OCT PY 2011 VL 7 IS 4 BP 357 EP 364 PG 8 WC Chemistry, Analytical SC Chemistry GA 893KJ UT WOS:000300354500011 ER -------------------------------------------------------------------------------- EF |
3Â¥2012-03-26 09:00:58
slwang2007
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5Â¥2012-03-26 09:09:33













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