Homogeneous liquid–liquid microextraction via flotation assistance for rapid and efficient determination of polycyclic aromatic hydrocarbons in water samples

Hosseini, Majid; Rezaee, Mohammad; Akbarian, Saeid; Mizani, Farhang; Pourjavid, Mohammad Reza; Arabieh, Masoud

doi:10.1016/j.aca.2012.10.030

Cited by 53 publications

(22 citation statements)

References 27 publications

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“…Nowadays, this method has found widespread application in extracting different compounds and elements, and satisfactory results have been recorded. Flotation-assisted homogeneous liquidliquid microextraction which was introduced in 2012 has been applied for the extraction and pre-concentration of polycyclic aromatic compounds (PAC) in soil and water samples 21,22) . This extraction method has some advantages such as simplicity, rapidness, low cost, high recovery and high enrichment factor.…”

Section: Introductionmentioning

confidence: 99%

Flotation-Assisted Homogeneous Liquid-Liquid Microextraction for Trace Determination of Uranium in Water Samples by Icp-MS

Veyseh

Ниази

2017

J. Chil. Chem. Soc.

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In this study, a novel method based on floatation assistance of homogeneous liquid-liquid microextraction (FA-HLLME), combined with inductively coupled plasma-mass spectroscopy (ICP-MS) was proposed, for the determination of trace uranium in environmental water samples. As one of the miniaturized separation and extraction techniques, homogenous liquid-liquid microextraction (HLLME) has been widely applied in the field of environmental monitoring and assessment. 1,2-pyridylazo-2-naphthol (PAN) was used as the complexing agent while toluene and methanol were selected as the extraction and homogeneous solvents, respectively. The factors that influenced the extraction efficiency for uranium determination (including pH, extraction and homogeneous solvents, concentration of PAN and NaCl, extraction time) were studied statistically. Under optimum conditions (pH=7.0, 100 mL toluene, 500 mL methanol, 6.4×10-5 mol L -1 PAN, 1.5 mol L -1 NaCl and 60 sec of extraction time), the linear dynamic range for uranium determination was 1.0-500.0 ng L -1 (R 2 =0.9995), with a corresponding limit of detection (LOD) of was 0.27 ng L , n=9) was 1.13%, with a corresponding enrichment factor of 360 for uranium extraction. The proposed method was successfully applied for the determination of uranium in different water samples.

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Section: Introductionmentioning

confidence: 99%

Flotation-Assisted Homogeneous Liquid-Liquid Microextraction for Trace Determination of Uranium in Water Samples by Icp-MS

Veyseh

Ниази

2017

J. Chil. Chem. Soc.

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“…It represents as poorly degradable pollutants that exist in soil, sediments, surface water and atmosphere [1]. Sixteen PAHs have been classified as genotoxic human carcinogen and mutagenic by the International Agency for Research on Cancer (IARC) and selected by US Environmental Protection Agency (EPA) as Constant Degree priority pollutants for regulatory process [2]. They are anthracene, fluoranthene, pyrene, benzo(b)fluoranthene, benzo(k)fluoranthene, acenaphthylene, acenaphthene, benzo(a)anthracene, benzo(a)pyrene, benzo(g,h,i)perylene, chrysene, cyclopenta(c,d)pyrene, dibenz(a,h)anthracene, dibenzo(a,l)pyrene, indeno(1,2,3-c,d)pyrene and 5-methylchrysene.…”

Section: Introductionmentioning

confidence: 99%

“…In this procedure, the mixture of extraction solvent and dispersive solvent is rapidly injected into aqueous sample results the formation of fine droplets. These droplets increase the surface area between extraction solvent and sample solution and speed up the extraction [2,4]. However, there are few drawbacks on this method as it acquired toxic halogenated solvents used as extraction solvent and dispersive solvent.…”

Section: Introductionmentioning

confidence: 99%

Modified Dispersive Liquid-Liquid Microextraction Using Green Solvent for Determination of Polycyclic Aromatic Hydrocarbons (Pahs) in Vegetable Samples

Kin¹,

Chander²,

Shing³

2016

MJAS

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According to International Agency for Research on Cancer (IARC), most of Polycyclic Aromatic Hydrocarbons (PAHs) known as genotoxic human carcinogen and mutagenic. PAHs represent as poorly degradable pollutants that exist in soils, sediments, surface water and atmosphere. A simple, rapid and sensitive extraction method termed modified Dispersive Liquid-Liquid Microextraction (DLLME) using green solvent was developed to determine PAHs in vegetable samples namely radish, cabbage and cucumber prior to Gas Chromatography Flame Ionization Detection (GC-FID). The extraction method is based on replacing chlorinated organic extraction solvent in the conventional DLLME with low toxic solvent, 1-bromo-3-methylbutane without using dispersive solvent. Several experimental factors such as type and volume of extraction solvents, extraction time, confirmation of 12 PAHs by GC-MS, recovery percentages on vegetable samples and the comparative analysis with conventional DLLME were carried out. Both DLLME were successfully extracted 12 types of PAHs. In modified DLLME, the recoveries of the analytes obtained were in a range of 72.72 -88.07 % with RSD value below 7.5 % which is comparable to the conventional DLLME. The use of microliter of low toxic extraction solvent without addition of dispersive solvent caused the method is economic and environmental friendly which is fulfill the current requirement, green chemistry based analytical method.Keywords: polycyclic aromatic hydrocarbons, modified dispersive liquid-liquid microextraction, gas chromatography flame ionization detection Abstrak Menurut agensi antarabangsa bagi penyelidikan kanser (IARC), kebanyakan Polisiklik Aromatik Hidrokarbon (PAHs) dikenali sebagai karsinogen genotoksik terhadap manusia dan mutagen. PAHs mewakili sebagai pencemar degradasi rendah yang wujud dalam tanah, enapan, air permukaan dan atmosfera. Satu kaedah pengekstrakan yang mudah, pantas dan sensitif yang digelar sebagai pengekstrakan mikro cecair -cecair serakan (DLLME) yang terubahsuai dengan pelarut hijau telah dibangunkan bagi penentuan PAHs dalam sampel sayur -sayuran iaitu lobak, kubis dan timun sebelum diukur menggunakan gas kromatografipengesan nyala pengionan (GC-FID). Kaedah pengekstrakan ini adalah berdasarkan penggantian pelarut pengekstrakan organik berklorin di dalam DLLME konvensional dengan pelarut rendah toksik, 1-bromo-3-metilbutana tanpa menggunakan pelarut penyebar. Beberapa factor eksperimen seperti jenis dan isipadu pelarut pengekstrakan, masa pengekstrakan, pengesahan 12

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“…Homogeneous liquid-liquid microextraction via flotation assistance (HLLME-FA) method was developed for the determination of polycyclic aromatic hydrocarbons (PAHs) in soil and water samples [25,26]. The aim of this study was to develop HLLME-FA method for the preconcentration and determination of trace amounts of thiobencarb in water samples.…”

Section: Introductionmentioning

confidence: 99%

Determination of thiobencarb in water samples by gas chromatography using a homogeneous liquid-liquid microextraction via flotation assistance procedure

Mashayekhi¹

2013

Bull. Chem. Soc. Eth.

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ABSTRACT. Homogeneous liquid-liquid microextraction via flotation assistance (HLLME-FA) coupled with gas chromatography-flame ionization detection (GC-FID) was applied for the extraction and determination of thiobencarb in water samples. In this study, a special extraction cell was designed to facilitate collection of the low-density solvent extraction. No centrifugation was required in this procedure. The water sample solution was added into the extraction cell which contained an appropriate mixture of toluene (as an extraction solvent) and acetone (as a homogeneous solvent). By using air flotation, the organic solvent was collected at the conical part of the designed cell. The effect of the different parameters on the efficiency of extraction such as type and volume of extraction and homogeneous solvents, ionic strength and extraction time were studied and optimized. Under the optimal conditions, linearity of the method was in the range of 1.0-200 µg L -1. The relative standard deviations in the real samples varied from 7.8-11.7 % (n = 3). The proposed method was successfully applied to analysis of thiobencarb in the water samples and satisfactory results were obtained.

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Homogeneous liquid–liquid microextraction via flotation assistance for rapid and efficient determination of polycyclic aromatic hydrocarbons in water samples

Cited by 53 publications

References 27 publications

Flotation-Assisted Homogeneous Liquid-Liquid Microextraction for Trace Determination of Uranium in Water Samples by Icp-MS

Flotation-Assisted Homogeneous Liquid-Liquid Microextraction for Trace Determination of Uranium in Water Samples by Icp-MS

Modified Dispersive Liquid-Liquid Microextraction Using Green Solvent for Determination of Polycyclic Aromatic Hydrocarbons (Pahs) in Vegetable Samples

Determination of thiobencarb in water samples by gas chromatography using a homogeneous liquid-liquid microextraction via flotation assistance procedure

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