Analysis of estrogens in environmental waters using polymer monolith in-polyether ether ketone tube solid-phase microextraction combined with high-performance liquid chromatography

Yi, Wen; Zhou, Bing-Sheng; Xu, Ying; Jin, Shiwei; Feng, Yu‐Qi

doi:10.1016/j.chroma.2006.08.049

Cited by 123 publications

(56 citation statements)

References 48 publications

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“…Thus, it is highly important to detect these compounds in water systems and domestic sewage, since their removal or destruction after passing through a STP is inefficient because they are resistant to most sewage treatment processes and are constantly found in surface waters (CARBALLA et al, 2004;YAMAMOTO et al, 2006;WATABE et al, 2004) and even in drinking water (KUCH;BALLSCHMITER, 2001;LOPEZ DE ALDA;BARCELO, 2000).…”

Section: Introductionmentioning

confidence: 99%

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<b>Occurrence of female sexual hormones in the Iguazu river basin, Curitiba, Paraná State, Brazil

et al. 2014

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ABSTRACT. Female sexual hormones have attracted the attention of the scientific community due to the effects that they cause by interfering in the endocrine system. Many contemporary studies have sought to monitor some of the main female sexual hormones in surface waters in Brazil. Current article evaluates the presence of 17β-estradiol, 17α-ethinylestradiol, estrone and progesterone in the surface waters of Curitiba and the surrounding metropolitan area in the state of Paraná, Brazil, by high-performance liquid chromatography (HPLC), performed at 7 different sites. The study revealed that a range of concentrations between 0.07 and 13.45 μg L -1 of female sexual hormones was extant; higher values than these were found in other regions of Brazil and in other countries. Higher concentrations have been attributed to the region´s sanitation due to large sewage amounts. Sewage discharge has also been confirmed by results of limnological parameters.Keywords: contraceptives, water quality, liquid chromatography.Ocorrência de hormônios sexuais femininos na bacia do Rio Iguaçu, Curitiba, Estado do Paraná, Brasil RESUMO. A presença de hormônios sexuais femininos é um assunto que tem atraído a atenção da comunidade científica pelos efeitos que eles causam na interferência no sistema endócrino. Muitos estudos atuais têm buscado monitorar alguns dos principais hormônios sexuais femininos em águas superficiais no Brasil. Assim, o objetivo deste artigo é a avaliação da presença de 17β estradiol, 17α-etinilestradiol, estrona e progesterona em águas superficiais da cidade de Curitiba e região metropolitana, no Estado do Paraná, Brasil, utilizando cromatografia líquida de alta eficiência. O estudo revelou uma faixa de concentração, de 0,07 a 13,45 μg L -1 de hormônios sexuais femininos, valores superiores a estes foram encontrados em outras regiões do Brasil e outros países. As altas concentrações têm sido atribuídas às condições sanitárias da região estudada, pelas grandes quantidades de esgoto. O descarte de esgoto foi também confirmado pelos resultados de parâmetros limnológicos.Palavras-chave: contraceptivos, qualidade da água, cromatografia líquida.

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Section: Introductionmentioning

confidence: 99%

“…Even at low concentrations, between μg L -1 and ng L -1 , FSHs may interfere in the endocrinal glands of animals and human beings, affecting the normal functioning of the endocrinal system and influencing development, growth and reproduction stages (WEN et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

<b>Occurrence of female sexual hormones in the Iguazu river basin, Curitiba, Paraná State, Brazil

et al. 2014

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“…4 (λ = 222 nm). [11], SPME [12], LPME [13,14], and DLLME [18] procedures in extraction and determination of BPA in water samples. According to this table, SBSE, SPME, and LPME are more time-consuming and tedious than AA-DLLME.…”

Section: 3279882 1081250mentioning

confidence: 99%

“…Some sample preconcentration procedures were applied for the pretreatment of BPA-containing samples, such as, single-drop liquid-phase microextraction (SDME) [6], solid-phase extraction (SPE) [7][8][9], liquid-liquid extraction (LLE) [10], stir bar sorptive extraction (SBSE) [11], solid-phase microextraction (SPME) [12,13], liquid-phase microextraction (LPME) [14], and molecularly imprinted solid-phase extraction (MISPE) [15,16]. Recently, a new microextraction method, named dispersive liquid-liquid microextraction (DLLME), introduced by Assadi et al [17], has been used as a powerful preconcentration technique for extraction of verity compounds including BPA [18][19][20][21][22][23][24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of alcoholic-assisted dispersive liquid-liquid microextraction of bisphenol a in water samples using an experimental design

Fatemi

Hadjmohammadi

Shakeri

2014

Acta Chromatographica

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Summary. Alcoholic-assisted dispersive liquid-liquid microextraction method (AA-DLLME) is used for the extraction, purification, and determination of bisphenol A in water samples by HPLC-UV. 1-octanol and methanol were selected as extraction and dispersive solvents of AA-DLLME procedure. The effects of several parameters of the AA-DLLME procedure (such as volume of extraction and dispersive solvents, amount of salt in sample solution, and extraction time) were investigated by a full factorial design. Then, the levels of significant factors were optimized using a central composite facecentered. The optimum conditions were obtained at 158 μL of extraction solvent, 500 μL of dispersive solvent, 1 min extraction time, and addition of 22% (w/v) of NaCl to the sample solution. Under optimum condition, the extraction recovery and the enrichment factor were determined, which were 91% and 65%, respectively. At these conditions, the limit of detection and the linearity were 0.10 and 1-100 μg L −1 , respectively. The relative standard deviations for intra-and inter-day of extraction of bisphenol A (BPA) were 6.98% and 9.80%, respectively (for five measurements). Finally, the method was successfully applied for the determination of BPA in environmental water samples. In conclusion, it can be stated that the applied method is fast, simple, and environmentally friendly.

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“…PPME shares the advantages of SPME while solving most of its limitations. In general the most important component of the PPME device is the porous polymer monolith usually formed in the confines of a silica capillary, although other materials such as polyether ether ketone (PEEK) and titanium tubes can used (Wen et al 2006). …”

Section: Introductionmentioning

confidence: 99%

Porous Polymer Monolith Microextraction Platform for Online GC-MS Applications

Mugo¹,

Huybregts²,

Zhou³

et al. 2012

Advanced Gas Chromatography - Progress in Agricultural, Biomedical and Industrial Applications

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Analysis of estrogens in environmental waters using polymer monolith in-polyether ether ketone tube solid-phase microextraction combined with high-performance liquid chromatography

Cited by 123 publications

References 48 publications

<b>Occurrence of female sexual hormones in the Iguazu river basin, Curitiba, Paraná State, Brazil

<b>Occurrence of female sexual hormones in the Iguazu river basin, Curitiba, Paraná State, Brazil

Evaluation of alcoholic-assisted dispersive liquid-liquid microextraction of bisphenol a in water samples using an experimental design

Porous Polymer Monolith Microextraction Platform for Online GC-MS Applications

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