Solid phase extraction with pyrenebutyric acid-bonded silica for analysis of polychlorinated biphenyls in sewage water by gas chromatography–mass spectrometry

Yang, Fangxing; Jin, Shiwei; Meng, Diya; Xu, Ying

doi:10.1016/j.chemosphere.2010.09.016

Cited by 11 publications

(4 citation statements)

References 10 publications

(11 reference statements)

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“…Traditionally, solid-phase extraction (SPE) using nonpolar or ion-exchange absorbents is used for extracting POPs in water samples [12,34,50,53,55,57,[59][60][61]. Clogging may sometimes occur when liquid samples are turbid and contain suspended particulates.…”

Section: Sample Extractionmentioning

confidence: 99%

Recent development in analysis of persistent organic pollutants under the Stockholm Convention

Tang¹

2013

TrAC Trends in Analytical Chemistry

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Section: Sample Extractionmentioning

confidence: 99%

Recent development in analysis of persistent organic pollutants under the Stockholm Convention

Tang¹

2013

TrAC Trends in Analytical Chemistry

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“…In order to overcome such disadvantages, our groups have developed a novel solid-phase extraction (SPE) method based on mixed ionic surfactants modified MWCNTs, where magnetic nanoparticles are adsorbed on the ionic surfactants to form MWCNTs-COO − /PDDA@Fe 3 O 4 . Compared with traditional SPE sorbents [16–19], the magnetic property endues the sorbents with magnetic separation ability so that the time-consuming SPE steps can be saved. In our experiment, the regenerability and reusability of these MNPs for PCBs removal from aqueous solution will be specially studied and proofed.…”

Section: Introductionmentioning

confidence: 99%

Enrichment of Polychlorinated Biphenyls from Aqueous Solutions Using Fe3O4 Grafted Multiwalled Carbon Nanotubes with Poly Dimethyl Diallyl Ammonium Chloride

Zeng

Cao

Sang

et al. 2012

IJMS

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In this paper, Fe3O4 nanoparticles (Fe3O4 NPs) grafted carboxyl groups of multiwalled carbon nanotubes with cationic polyelectrolyte poly (dimethyldiallylammonium chloride) (PDDA) (MWCNTs-COO−/PDDA@Fe3O4), are successfully synthesized and used for the extraction of six kinds of major toxic polychorinated biphenyls (PCBs) from a large volume of water solution. The hydrophilicity of the PDDA cage can enhance the dispersibility of sorbents in water samples, and the superparamagnetism of the Fe3O4 NPs facilitate magnetic separation which directly led to the simplification of the extraction procedure. With the magnetic solid-phase extraction (MSPE) technique based on the MWCNTs-COO−/PDDA@Fe3O4 sorbents, it requires only 30 min to extract trace levels of PCBs from 500 mL water samples. When the eluate condensed to 1.0 mL, concentration factors for PCBs became over 500. The spiked recoveries of several real water samples for PCBs were in the range of 73.3–98.9% with relative standard deviations varying from 3.8% to 9.4%, reflecting good accuracy of the method. Therefore, preconcentration of trace level of PCBs by using this MWCNTs-COO−/PDDA@Fe3O4 sorbent, which are stable for multiple reuses, from water solution can be performed.

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“…8,9 Extraction and preconcentration techniques, such as liquid-liquid extraction (LLE), solid-phase extraction (SPE) and solid-phase microextraction (SPME), have been widely used to determine PCBs. 1,10,11 LLE and SPE are mainly used, but they have some fundamental limitations. LLE is a laborious, time consuming process and usually requires large amounts of high-purity and toxic solvents.…”

Section: Introductionmentioning

confidence: 99%

“…10 SPE is usually faster and consumes less organic solvents than LLE, however, for extraction from high volumes of water samples, the entire analysis of SPE might be lengthy and expensive because of a series of stages. 11,12 Thus, a relatively simple, rapid, cost-effective, and virtually solvent-free sample preparation method, SPME, has been greatly developed and applied to the determination of PCBs in different matrices, e.g., soil, sediments, water, urine and milk. [13][14][15][16][17][18] As for water samples, humic substances are major components of dissolved organic matter (DOM) 5,19 and aquatic humic substances have been excellently characterized.…”

Section: Introductionmentioning

confidence: 99%

Determination of polychlorinated biphenyls in seawater using headspace solid-phase microextraction coupled with gas chromatography-mass spectrometry with the aid of experimental design

Song

Chen

et al. 2012

J. Braz. Chem. Soc.

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Uma abordagem de pré-tratamento simples e confiável em cromatografia gasosa acoplada à espectrometria de massa (GC-MS) foi desenvolvida para a limpeza simultânea da água do mar e concentração de bifenilas policloradas (PCBs), com 1 a 8 átomos de cloro, baseada na combinação da oxidação de KMnO 4 com amostragem de headspace e microextração em fase sólida (SPME). Os fatores que afetam o processo de extração foram estudados usando uma abordagem multivariada. Sob condições ótimas, tais como fibra de PDMS com 7 μm, 78 °C de temperatura de extração, 33 min de tempo de extração e 8 mL de volume, os limites de detecção do método variaram entre 0,3 e 7,5 ng L -1 e os valores de precisão variaram entre 3,9 e 9,9%, para um nível de fortificação de 0,05 μg L -1 de PCBs. Ácidos húmicos da água do mar exibiram efeitos negativos marcantes; as recuperações de PCBs foram significativamente melhoradas, especialmente para os mais lipofílicos, CB171 e CB201, de 35% e 49% para 78% e 89%, respectivamente, após o pré-tratamento das amostras da água do mar com KMnO 4 em pH 6. O método desenvolvido mostrou-se simples, rápido, confiável e aplicável para a determinação de diferentes PCBs em água do mar contendo grandes quantidades de substâncias húmicas.A simple and reliable pretreatment approach in gas chromatography-mass spectrometry (GC-MS) was developed for concurrent clean-up of seawater and the concentration of lipophilic polychlorinated biphenyls (PCBs) with 1-8 chlorine atoms based on the combination of KMnO 4 oxidation with headspace sampling and solid-phase microextraction (SPME). Factors affecting the extraction process were studied using a multivariable approach. Under optimum conditions such as PDMS 7 μm of fiber, 78 °C of extraction temperature, 33 min of extraction time, 8 mL of volume, the limits of detection ranged from 0.3 to 7.5 ng L -1 and precisions were between 3.9 and 9.9% at spiked 0.05 μg L -1 PCBs. Humic acids in seawater exhibited remarkably negative effects; recoveries of PCBs were significantly improved, especially for more lipophilic CB171 and CB201 from 35% and 49% to 78% and 89%, respectively, after KMnO 4 pretreating seawater samples at pH 6. The developed method was demonstrated to be simple, rapid, reliable and applicable for determining different PCBs in seawater containing large amounts of humic substances.

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Solid phase extraction with pyrenebutyric acid-bonded silica for analysis of polychlorinated biphenyls in sewage water by gas chromatography–mass spectrometry

Cited by 11 publications

References 10 publications

Recent development in analysis of persistent organic pollutants under the Stockholm Convention

Recent development in analysis of persistent organic pollutants under the Stockholm Convention

Enrichment of Polychlorinated Biphenyls from Aqueous Solutions Using Fe3O4 Grafted Multiwalled Carbon Nanotubes with Poly Dimethyl Diallyl Ammonium Chloride

Determination of polychlorinated biphenyls in seawater using headspace solid-phase microextraction coupled with gas chromatography-mass spectrometry with the aid of experimental design

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