51
|
Determination of estrogenic mycotoxins in environmental water samples by low-toxicity dispersive liquid–liquid microextraction and liquid chromatography–tandem mass spectrometry. J Chromatogr A 2015; 1391:1-8. [DOI: 10.1016/j.chroma.2015.02.067] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2014] [Revised: 02/18/2015] [Accepted: 02/23/2015] [Indexed: 11/19/2022]
|
52
|
Tutorial review on validation of liquid chromatography–mass spectrometry methods: Part II. Anal Chim Acta 2015; 870:8-28. [DOI: 10.1016/j.aca.2015.02.016] [Citation(s) in RCA: 154] [Impact Index Per Article: 17.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2015] [Accepted: 02/09/2015] [Indexed: 11/17/2022]
|
53
|
Ros O, Vallejo A, Blanco-Zubiaguirre L, Olivares M, Delgado A, Etxebarria N, Prieto A. Microextraction with polyethersulfone for bisphenol-A, alkylphenols and hormones determination in water samples by means of gas chromatography–mass spectrometry and liquid chromatography–tandem mass spectrometry analysis. Talanta 2015; 134:247-255. [DOI: 10.1016/j.talanta.2014.11.015] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2014] [Revised: 11/05/2014] [Accepted: 11/08/2014] [Indexed: 10/24/2022]
|
54
|
Pressurized hot water extraction followed by miniaturized membrane assisted solvent extraction for the green analysis of alkylphenols in sediments. J Chromatogr A 2015; 1383:8-17. [DOI: 10.1016/j.chroma.2015.01.022] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Revised: 01/05/2015] [Accepted: 01/09/2015] [Indexed: 11/17/2022]
|
55
|
Scientific Opinion on the risks to public health related to the presence of bisphenol A (BPA) in foodstuffs. EFSA J 2015. [DOI: 10.2903/j.efsa.2015.3978] [Citation(s) in RCA: 528] [Impact Index Per Article: 58.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
|
56
|
Salgueiro-González N, Turnes-Carou I, Muniategui-Lorenzo S, López-Mahía P, Prada-Rodríguez D. Analysis of endocrine disruptor compounds in marine sediments by in cell clean up-pressurized liquid extraction-liquid chromatography tandem mass spectrometry determination. Anal Chim Acta 2014; 852:112-20. [DOI: 10.1016/j.aca.2014.09.041] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2014] [Revised: 09/03/2014] [Accepted: 09/22/2014] [Indexed: 11/25/2022]
|
57
|
Zou Y, Zhang Z, Shao X, Chen Y, Wu X, Yang L, Zhu J, Zhang D. Application of Three Phase Hollow Fiber LPME Using an Ionic Liquid as Supported Phase for Preconcentration of Bisphenol A and Diethylstilbestrol from Water Sample with HPLC Detection. J LIQ CHROMATOGR R T 2014. [DOI: 10.1080/10826076.2013.873874] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Yanmin Zou
- a School of Pharmacy, Jiangsu University , Zhenjiang , Jiangsu , China
| | - Zhen Zhang
- b School of the Environment, Jiangsu University , Zhenjiang , Jiangsu , China
| | - Xiaoling Shao
- b School of the Environment, Jiangsu University , Zhenjiang , Jiangsu , China
| | - Yao Chen
- b School of the Environment, Jiangsu University , Zhenjiang , Jiangsu , China
| | - Xiangyang Wu
- b School of the Environment, Jiangsu University , Zhenjiang , Jiangsu , China
| | - Liuqing Yang
- c School of Chemistry & Chemical Engineering, Jiangsu University , Zhenjiang , Jiangsu , China
| | - Jingjing Zhu
- b School of the Environment, Jiangsu University , Zhenjiang , Jiangsu , China
| | - Dongmei Zhang
- b School of the Environment, Jiangsu University , Zhenjiang , Jiangsu , China
| |
Collapse
|
58
|
Farajzadeh MA, Yadeghari A, Khoshmaram L, Ghorbanpour H. Gas chromatographic determination of some phenolic compounds in fuels and engine oil after simultaneous derivatization and microextraction. J Sep Sci 2014; 37:2966-73. [DOI: 10.1002/jssc.201400398] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2014] [Revised: 07/22/2014] [Accepted: 07/22/2014] [Indexed: 11/10/2022]
Affiliation(s)
- Mir Ali Farajzadeh
- Department of Analytical Chemistry; Faculty of Chemistry; University of Tabriz; Tabriz Iran
| | - Adeleh Yadeghari
- Department of Analytical Chemistry; Faculty of Chemistry; University of Tabriz; Tabriz Iran
| | - Leila Khoshmaram
- Department of Chemistry; Faculty of Sciences; AzarbaijanShahidMadani University; Tabriz Iran
| | | |
Collapse
|
59
|
Sung YH, Liu CH, Leong MI, Huang SD. Determination of Alkylphenols in Water by Dispersive Liquid–Liquid Microextraction Based on Solid Formation without a Disperser. ANAL LETT 2014. [DOI: 10.1080/00032719.2014.921824] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
60
|
Padrón MET, Afonso-Olivares C, Sosa-Ferrera Z, Santana-Rodríguez JJ. Microextraction techniques coupled to liquid chromatography with mass spectrometry for the determination of organic micropollutants in environmental water samples. Molecules 2014; 19:10320-49. [PMID: 25033059 PMCID: PMC6272018 DOI: 10.3390/molecules190710320] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2014] [Revised: 07/02/2014] [Accepted: 07/10/2014] [Indexed: 11/17/2022] Open
Abstract
Until recently, sample preparation was carried out using traditional techniques, such as liquid–liquid extraction (LLE), that use large volumes of organic solvents. Solid-phase extraction (SPE) uses much less solvent than LLE, although the volume can still be significant. These preparation methods are expensive, time-consuming and environmentally unfriendly. Recently, a great effort has been made to develop new analytical methodologies able to perform direct analyses using miniaturised equipment, thereby achieving high enrichment factors, minimising solvent consumption and reducing waste. These microextraction techniques improve the performance during sample preparation, particularly in complex water environmental samples, such as wastewaters, surface and ground waters, tap waters, sea and river waters. Liquid chromatography coupled to tandem mass spectrometry (LC/MS/MS) and time-of-flight mass spectrometric (TOF/MS) techniques can be used when analysing a broad range of organic micropollutants. Before separating and detecting these compounds in environmental samples, the target analytes must be extracted and pre-concentrated to make them detectable. In this work, we review the most recent applications of microextraction preparation techniques in different water environmental matrices to determine organic micropollutants: solid-phase microextraction SPME, in-tube solid-phase microextraction (IT-SPME), stir bar sorptive extraction (SBSE) and liquid-phase microextraction (LPME). Several groups of compounds are considered organic micropollutants because these are being released continuously into the environment. Many of these compounds are considered emerging contaminants. These analytes are generally compounds that are not covered by the existing regulations and are now detected more frequently in different environmental compartments. Pharmaceuticals, surfactants, personal care products and other chemicals are considered micropollutants. These compounds must be monitored because, although they are detected in low concentrations, they might be harmful toward ecosystems.
Collapse
Affiliation(s)
- Ma Esther Torres Padrón
- Departamento de Química, Universidad de Las Palmas de Gran Canaria, 35017, Las Palmas de Gran Canaria, Spain.
| | - Cristina Afonso-Olivares
- Departamento de Química, Universidad de Las Palmas de Gran Canaria, 35017, Las Palmas de Gran Canaria, Spain.
| | - Zoraida Sosa-Ferrera
- Departamento de Química, Universidad de Las Palmas de Gran Canaria, 35017, Las Palmas de Gran Canaria, Spain.
| | - José Juan Santana-Rodríguez
- Departamento de Química, Universidad de Las Palmas de Gran Canaria, 35017, Las Palmas de Gran Canaria, Spain.
| |
Collapse
|
61
|
Matrix effect during the membrane-assisted solvent extraction coupled to liquid chromatography tandem mass spectrometry for the determination of a variety of endocrine disrupting compounds in wastewater. J Chromatogr A 2014; 1356:163-70. [PMID: 25001332 DOI: 10.1016/j.chroma.2014.06.051] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2014] [Revised: 05/14/2014] [Accepted: 06/13/2014] [Indexed: 11/23/2022]
Abstract
Membrane-assisted solvent extraction (MASE) coupled to liquid chromatography-triple quadrupole mass spectrometry (LC-MS/MS) was studied for the determination of a variety of emerging and priority compounds in wastewater. Among the target analytes studied certain hormones (estrone (E1), 17β-estradiol (E2), androsterone (ADT), 17α-ethynyl estradiol (EE2), diethylstilbestrol (DES), equilin (EQ), testosterone (TT), mestranol (MeEE2), 19-norethisterone (NT), progesterone (PG) and equilenin (EQN)), alkylphenols (APs) (4-tert-octylphenol (4tOP), nonylphenol technical mixture (NPs) and 4n-octylphenol (4nOP)) and BPA were included. The work was primarily focused in the LC-MS/MS detection step, both in terms of variable optimization and with respect to the matrix effect study. Both, electrospray ionization (ESI) and atmospheric pressure chemical ionization (APCI) were assessed both in the negative and positive mode, including the optimization of MS/MS operating conditions. The best results were obtained, in most of the cases, for ESI using 0.05% ammonium hydroxide as buffer solution in the mobile phase, composed with methanol and water. Under optimum detection conditions, matrix effect during the detection step was thoroughly studied. Dilution, correction with deuterated analogues and clean-up of the extracts were evaluated for matrix effect correction. Clean-up with Florisil together with correction with deuterated analogues provided the most satisfactory results, with apparent recoveries in the 57-136% range and method detection limits in the low ngL(-1) level for most of the analytes. For further validation of the method, two separated extraction procedures, the above mentioned MASE, and conventional solid phase extraction (SPE) were compared during the analysis of real samples and comparable results were successfully obtained for E1, E2, EE2, DES, NT, TT, EQ, PG, BPA, ADT, 4nOP, 4tOP, NPs and EQN.
Collapse
|
62
|
Bayen S, Yi X, Segovia E, Zhou Z, Kelly BC. Analysis of selected antibiotics in surface freshwater and seawater using direct injection in liquid chromatography electrospray ionization tandem mass spectrometry. J Chromatogr A 2014; 1338:38-43. [DOI: 10.1016/j.chroma.2014.02.034] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2013] [Revised: 01/21/2014] [Accepted: 02/11/2014] [Indexed: 11/25/2022]
|
63
|
Singh B, Kumar A, Malik AK. Recent Advances in Sample Preparation Methods for Analysis of Endocrine Disruptors from Various Matrices. Crit Rev Anal Chem 2014; 44:255-69. [DOI: 10.1080/10408347.2013.859981] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
64
|
Martín J, Camacho-Muñoz D, Santos JL, Aparicio I, Alonso E. Determination of emerging and priority industrial pollutants in surface water and wastewater by liquid chromatography–negative electrospray ionization tandem mass spectrometry. Anal Bioanal Chem 2014; 406:3709-16. [DOI: 10.1007/s00216-014-7689-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2013] [Revised: 02/06/2014] [Accepted: 02/11/2014] [Indexed: 10/25/2022]
|
65
|
A microvolume molecularly imprinted polymer modified fiber-optic evanescent wave sensor for bisphenol A determination. Anal Bioanal Chem 2014; 406:2411-20. [DOI: 10.1007/s00216-014-7664-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2013] [Revised: 11/23/2013] [Accepted: 12/16/2013] [Indexed: 10/25/2022]
|
66
|
Development of a Dispersive Liquid-Liquid Microextraction Procedure for Biodegradation Studies on Nonylphenol Propoxylates Under Aerobic Conditions. J SURFACTANTS DETERG 2014; 17:111-120. [PMID: 24415899 PMCID: PMC3880491 DOI: 10.1007/s11743-013-1479-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2012] [Accepted: 04/08/2013] [Indexed: 10/26/2022]
Abstract
Aerobic biodegradation behavior of nonylphenol propoxylates was investigated using dispersive liquid-liquid microextraction as a simple and fast technique for sample preparation. The developed method proved to be efficient for the isolation and concentration of nonylphenol propoxylates before their quantification with the use of high performance liquid chromatography. The primary biodegradation of nonylphenol propoxylates was approximately 80 % by 10 days after the beginning of the test. However, the biodegradation products which were identified with the use of mass spectrometric detection persisted for many days.
Collapse
|
67
|
Fabregat-Cabello N, Sancho JV, Vidal A, González FV, Roig-Navarro AF. Development and validation of a liquid chromatography isotope dilution mass spectrometry method for the reliable quantification of alkylphenols in environmental water samples by isotope pattern deconvolution. J Chromatogr A 2014; 1328:43-51. [PMID: 24423386 DOI: 10.1016/j.chroma.2013.12.077] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2013] [Revised: 12/23/2013] [Accepted: 12/24/2013] [Indexed: 01/07/2023]
Abstract
We present here a new measurement method for the rapid extraction and accurate quantification of technical nonylphenol (NP) and 4-t-octylphenol (OP) in complex matrix water samples by UHPLC-ESI-MS/MS. The extraction of both compounds is achieved in 30min by means of hollow fiber liquid phase microextraction (HF-LPME) using 1-octanol as acceptor phase, which provides an enrichment (preconcentration) factor of 800. On the other hand we have developed a quantification method based on isotope dilution mass spectrometry (IDMS) and singly (13)C1-labeled compounds. To this end the minimal labeled (13)C1-4-(3,6-dimethyl-3-heptyl)-phenol and (13)C1-t-octylphenol isomers were synthesized, which coelute with the natural compounds and allows the compensation of the matrix effect. The quantification was carried out by using isotope pattern deconvolution (IPD), which permits to obtain the concentration of both compounds without the need to build any calibration graph, reducing the total analysis time. The combination of both extraction and determination techniques have allowed to validate for the first time a HF-LPME methodology at the required levels by legislation achieving limits of quantification of 0.1ngmL(-1) and recoveries within 97-109%. Due to the low cost of HF-LPME and total time consumption, this methodology is ready for implementation in routine analytical laboratories.
Collapse
Affiliation(s)
- Neus Fabregat-Cabello
- Research Institute for Pesticides and Water, Universitat Jaume I, E-12071 Castellón, Spain
| | - Juan V Sancho
- Research Institute for Pesticides and Water, Universitat Jaume I, E-12071 Castellón, Spain
| | - Andreu Vidal
- Departament de Química Inorgànica i Orgànica, Universitat Jaume I, E-12071 Castellón, Spain
| | - Florenci V González
- Departament de Química Inorgànica i Orgànica, Universitat Jaume I, E-12071 Castellón, Spain
| | | |
Collapse
|
68
|
Lisboa NS, Fahning CS, Cotrim G, dos Anjos JP, de Andrade JB, Hatje V, da Rocha GO. A simple and sensitive UFLC-fluorescence method for endocrine disrupters determination in marine waters. Talanta 2013; 117:168-75. [DOI: 10.1016/j.talanta.2013.08.006] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2013] [Revised: 08/01/2013] [Accepted: 08/07/2013] [Indexed: 11/25/2022]
|
69
|
Rajasärkkä J, Virta M. Characterization of a Bisphenol A Specific Yeast Bioreporter Utilizing the Bisphenol A-Targeted Receptor. Anal Chem 2013; 85:10067-74. [DOI: 10.1021/ac401614c] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Johanna Rajasärkkä
- Department
of Food and Environmental
Sciences, University of Helsinki, Finland
| | - Marko Virta
- Department
of Food and Environmental
Sciences, University of Helsinki, Finland
| |
Collapse
|
70
|
Salgueiro-González N, López de Alda M, Muniategui-Lorenzo S, Prada-Rodríguez D, Barceló D. Determination of 13 estrogenic endocrine disrupting compounds in atmospheric particulate matter by pressurised liquid extraction and liquid chromatography-tandem mass spectrometry. Anal Bioanal Chem 2013; 405:8913-23. [DOI: 10.1007/s00216-013-7298-y] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2013] [Revised: 08/02/2013] [Accepted: 08/08/2013] [Indexed: 11/30/2022]
|
71
|
Fast methodology for the reliable determination of nonylphenol in water samples by minimal labeling isotope dilution mass spectrometry. J Chromatogr A 2013; 1301:19-26. [DOI: 10.1016/j.chroma.2013.05.033] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2013] [Revised: 04/17/2013] [Accepted: 05/16/2013] [Indexed: 11/19/2022]
|
72
|
Yan H, Wang H. Recent development and applications of dispersive liquid–liquid microextraction. J Chromatogr A 2013; 1295:1-15. [DOI: 10.1016/j.chroma.2013.04.053] [Citation(s) in RCA: 192] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2013] [Accepted: 04/16/2013] [Indexed: 11/29/2022]
|
73
|
Analytical methodologies for the determination of endocrine disrupting compounds in biological and environmental samples. BIOMED RESEARCH INTERNATIONAL 2013; 2013:674838. [PMID: 23738329 PMCID: PMC3662172 DOI: 10.1155/2013/674838] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/25/2013] [Accepted: 03/25/2013] [Indexed: 11/17/2022]
Abstract
Endocrine-disruptor compounds (EDCs) can mimic natural hormones and produce adverse effects in the endocrine functions by interacting with estrogen receptors. EDCs include both natural and synthetic chemicals, such as hormones, personal care products, surfactants, and flame retardants, among others. EDCs are characterised by their ubiquitous presence at trace-level concentrations and their wide diversity. Since the discovery of the adverse effects of these pollutants on wildlife and human health, analytical methods have been developed for their qualitative and quantitative determination. In particular, mass-based analytical methods show excellent sensitivity and precision for their quantification. This paper reviews recently published analytical methodologies for the sample preparation and for the determination of these compounds in different environmental and biological matrices by liquid chromatography coupled with mass spectrometry. The various sample preparation techniques are compared and discussed. In addition, recent developments and advances in this field are presented.
Collapse
|
74
|
Salgueiro-González N, Turnes-Carou I, Muniategui-Lorenzoa S, López-Mahía P, Prada-Rodríguez D. Fast and selective pressurized liquid extraction with simultaneous in cell clean up for the analysis of alkylphenols and bisphenol A in bivalve molluscs. J Chromatogr A 2013; 1270:80-7. [PMID: 23218190 DOI: 10.1016/j.chroma.2012.11.014] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2012] [Revised: 11/07/2012] [Accepted: 11/08/2012] [Indexed: 11/16/2022]
Abstract
A novel and green analytical methodology for the determination of alkylphenols (4-tert-octylphenol, 4-n-octylphenol, 4-n-nonylphenol, nonylphenol technical mixture) and bisphenol A in bivalve mollusc samples was developed and validated. The method was based on selective pressurized liquid extraction (SPLE) with a simultaneous in cell clean up combined with liquid chromatography–electrospray ionization tandem mass spectrometry in negative mode (LC–ESI-MS/MS). Quantitation was performed by standard addition curves in order to correct matrix effects. The analytical features of the method were satisfactory: relative recoveries varied between 80 and 107% and repeatability and intermediate precision were <20% for all compounds. Uncertainty assessment of measurement was estimated on the basis of an in-house validation according to EURACHEM/CITAC guide. Quantitation limits of the method (MQL) ranged between 0.34 (4-n-octylphenol) and 3.6 ng g(−1) dry weight (nonylphenol). The main advantages of the method are sensitivity, selectivity, automaticity, low volumes of solvents required and low sample analysis time (according with the principles of Green Chemistry). The method was applied to the analysis of mussel samples of Galicia coast (NW of Spain). Nonylphenol and 4-tert-octylphenol were measured in all samples at concentrations between 9.3 and 372 ng g(−1) dw. As an approach, the human daily intake of these compounds was estimated and no risk for human health was found.
Collapse
Affiliation(s)
- N Salgueiro-González
- Department of Analytical Chemistry, University of A Coruña, Campus da Zapateira, Rúa da Fraga 10, E-15008 A Coruña, Spain
| | | | | | | | | |
Collapse
|
75
|
Martín J, Camacho-Muñoz D, Santos JL, Aparicio I, Alonso E. Determination of priority pollutants in aqueous samples by dispersive liquid–liquid microextraction. Anal Chim Acta 2013; 773:60-67. [DOI: 10.1016/j.aca.2013.02.032] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2012] [Revised: 02/13/2013] [Accepted: 02/16/2013] [Indexed: 11/29/2022]
|
76
|
Ku YC, Leong MI, Wang WT, Huang SD. Up-and-down shaker-assisted ionic liquid-based dispersive liquid-liquid microextraction of benzophenone-type ultraviolet filters. J Sep Sci 2013; 36:1470-7. [DOI: 10.1002/jssc.201201108] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2012] [Revised: 01/29/2013] [Accepted: 01/30/2013] [Indexed: 11/07/2022]
Affiliation(s)
- Yu-Chien Ku
- Department of Chemistry; National Tsing Hua University; Hsinchu; Taiwan
| | - Mei-I Leong
- Department of Chemistry; National Tsing Hua University; Hsinchu; Taiwan
| | - Wan-Ting Wang
- Department of Chemistry; National Tsing Hua University; Hsinchu; Taiwan
| | - Shang-Da Huang
- Department of Chemistry; National Tsing Hua University; Hsinchu; Taiwan
| |
Collapse
|
77
|
Gao L, Zou J, Liu H, Zeng J, Wang Y, Chen X. Determination of bisphenol A in thermal printing papers treated by alkaline aqueous solution using the combination of single-drop microextraction and HPLC. J Sep Sci 2013; 36:1298-303. [DOI: 10.1002/jssc.201201060] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2012] [Revised: 01/11/2013] [Accepted: 01/13/2013] [Indexed: 11/08/2022]
Affiliation(s)
- Leihong Gao
- College of Science; Hebei University of Science and Technology; Shijiazhuang China
| | - Jing Zou
- State Key Laboratory of Marine Environmental Science; Xiamen University; Xiamen China
| | - Haihong Liu
- State Key Laboratory of Marine Environmental Science; Xiamen University; Xiamen China
| | - Jingbin Zeng
- State Key Laboratory of Heavy Oil Processing, College of Science; China University of Petroleum (East China); Qingdao China
| | - Yiru Wang
- State Key Laboratory of Marine Environmental Science; Xiamen University; Xiamen China
| | - Xi Chen
- State Key Laboratory of Marine Environmental Science; Xiamen University; Xiamen China
| |
Collapse
|
78
|
Application of hydrophobic extractant in aqueous two-phase systems for selective extraction of cobalt, nickel and cadmium. J Chromatogr A 2013; 1279:13-9. [DOI: 10.1016/j.chroma.2013.01.003] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2012] [Revised: 12/24/2012] [Accepted: 01/03/2013] [Indexed: 11/18/2022]
|
79
|
Salgueiro-González N, Turnes-Carou I, Muniategui-Lorenzo S, López-Mahía P, Prada-Rodríguez D. Membrane assisted solvent extraction coupled with liquid chromatography tandem mass spectrometry applied to the analysis of alkylphenols in water samples. J Chromatogr A 2013; 1281:46-53. [DOI: 10.1016/j.chroma.2013.01.069] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2012] [Revised: 01/15/2013] [Accepted: 01/15/2013] [Indexed: 10/27/2022]
|
80
|
Liang TT, Lv ZH, Jiang TF, Wang YH. High-density extraction solvent-based solvent de-emulsification dispersive liquid-liquid microextraction combined with MEKC for detection of chlorophenols in water samples. Electrophoresis 2013; 34:345-52. [DOI: 10.1002/elps.201200355] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2012] [Revised: 10/08/2012] [Accepted: 10/08/2012] [Indexed: 11/09/2022]
|
81
|
Analysis of losartan and carvedilol in urine and plasma samples using a dispersive liquid–liquid microextraction isocratic HPLC–UV method. Bioanalysis 2012; 4:2805-21. [DOI: 10.4155/bio.12.261] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
Background: A simple, precise and sensitive HPLC method has been developed for simultaneous determination of carvedilol and losartan in human plasma and urine samples. The analytes were extracted by a dispersive liquid–liquid microextraction method. A mobile phase of 15 mM sodium dihydrogen phosphate buffer (pH 4.0)/acetonitrile/2-propanol (70/27.5/2.5, v/v/v) was used to separate the drugs using a Waters® ODS column (250 × 4.6 mm) and detected by a UV detector at 222 nm. Results: The developed method is selective for studied drugs possessing a linearity range of 0.1–1.0 and 0.05–0.75 µg/ml, respectively, for losartan and carvedilol with precision <15%. The accuracy is better than 15% and the mean recovery of carvedilol and losartan was 98.9 and 100.2% for plasma and 100.7 and 100.5% for urine samples, respectively. Conclusion: The developed method is applicable for therapeutic drug monitoring and PK analyses.
Collapse
|
82
|
Salgueiro-González N, Concha-Graña E, Turnes-Carou I, Muniategui-Lorenzo S, López-Mahía P, Prada-Rodríguez D. Blank and sample handling troubleshooting in ultratrace analysis of alkylphenols and bisphenol A by liquid chromatography tandem mass spectrometry. Talanta 2012; 101:413-9. [DOI: 10.1016/j.talanta.2012.09.050] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2012] [Revised: 09/12/2012] [Accepted: 09/22/2012] [Indexed: 10/27/2022]
|