Application of supported liquid membrane probe for extraction and preconcentration of organotin compounds from environmental water samples

Cukrowska, Ewa; Chimuka, Luke; Nsengimana, Hermogène; Kwaramba, Valerie

doi:10.1016/j.aca.2004.07.021

Cited by 24 publications

(22 citation statements)

References 33 publications

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“…The probe depth of 2 mm into the sample was used in all experiments [29]. Figure 2 shows the effect of pH and the extraction time on the membrane probe extraction.…”

Section: Optimization Of Ol From Aqueous Donor To Organic Acceptormentioning

confidence: 99%

“…The new miniaturised liquid membrane probe was made from a glass tube of dimensions 13 mm id, 16 mm od, and 92 mm length [28,29]. In this configuration, one end of the glass tube was closed with a porous Millipore filter (Fluoropore 0.2 lm FG) sealed with PTFE tape and soaked with organic solvent (isooctane) (Fig.…”

Section: Membrane Probe Unitmentioning

confidence: 99%

“…The liquid membrane probe (LMP) device developed in our laboratory was used for the speciation study of chromium and manganese in water and biological samples, and organotin compounds in water samples [28,29]. Presently this system is used for the speciation analysis of OL compounds, which involves extraction from aqueous donor solution to organic solvent acceptor.…”

Section: Introductionmentioning

confidence: 99%

“…Extraction methods commonly used for organometallic compounds include: solid phase extraction (SPE) [14 -19] and solid phase microextraction (SPME) [20 -22]; microwave assisted extraction (MAE) [23 -27]; and pressurized liquid extraction (PLE) [17,29,30]. These are known as fast extraction methods and are accompanied by a possible loss of chemical stability of the analysed species during the process, particularly in those methods which employ high temperature or pressure, such as PLE and MAE [19].…”

Section: Introductionmentioning

confidence: 99%

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Speciation of alkyllead in aqueous samples with application of liquid membrane probe for extraction and preconcentration

Cukrowska¹,

Nsengimana

Chimuka

2007

J of Separation Science

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Lead is known to be toxic, especially in its organic forms (organolead, OL). In the environment tetraalkyllead species are rapidly degraded by sunlight and atmospheric constituents like ozone or hydroxyl radicals. Such breakdown yields the soluble forms such as trialkyllead and dialkyllead and finally ionic lead species. The liquid membrane extraction probe (LMP) device has been developed and used as an extraction and preconcentration tool for the speciation analysis of organolead compounds by GC/MS. It allows analysis of OL species at low concentrations in complicated matrices of environmental samples. The effect of pH, stirring rate, and time that influence the extraction efficiency of OL extraction by the LMP method were optimized. The transformation of tetramethyllead in aqueous media at different concentrations of major ions K(+), Na(+), Ca(2+), Mg(2+), Cl(-), SO(4)(2-) and the application of LMP to environmental samples are presented. It was found that degradation of tetramethyllead takes between 24 and 37 days. The detection limit (LOD) of the method for all organolead species investigated is around 4.7 microg/L, with a limit of quantitation of 15 microg/L.

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“…The probe depth of 2 mm into the sample was used in all experiments [29]. Figure 2 shows the effect of pH and the extraction time on the membrane probe extraction.…”

Section: Optimization Of Ol From Aqueous Donor To Organic Acceptormentioning

confidence: 99%

Section: Membrane Probe Unitmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Speciation of alkyllead in aqueous samples with application of liquid membrane probe for extraction and preconcentration

Cukrowska¹,

Nsengimana

Chimuka

2007

J of Separation Science

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“…TBT at concentrations of less than 1 ng/L can induce imposex in marine organisms [5]. If consumed by humans, TBT may have adverse effects on the human immune system and hormonal performance [6,7]. Many developed nations (viz.…”

Section: Introductionmentioning

confidence: 99%

Ion-pair reversed-phase chromatography for speciation of organotin compounds

2010

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-Objective: Ion-pair reversed-phase chromatography (IP-RP) has been investigated for speciation of dibutyltin (DBT), tributyltin (TBT), and triphenyltin (TPhT). The influence of several parameters (pH, alkyl chain length, concentration of the ion pair reagent) has been studied to determine the best chromatographic conditions. Methods: Separation of the three organotin compounds was achieved on a C8-bonded silica column using a mixture of methanol, water, and acetic acid (80:19:1) as eluent, containing 1 mmol/L decane sulfonic acid as ion pairing reagent. The eluates were detected on-line by hydride generation-quartz furnace atomic absorption spectrophotometry (HG-QFAAS). Results: The resolving power of this developed method for separation of the organotins species at above conditions was shown by the values of fundamental chromatographic parameters. The capacity factors (k') for DBT, TBT and TPhT species were 0.27, 2.54, and 5.92 respectively. Resolution (Rs) values for DBT-TBT and TBT-TPhT separation were 2.92 and 2.42 respectively, while the selectivity for DBT-TBT and TBT-TPhT were 9.76 and 3.50 respectively. Conclusion: The developed IP-RP-HG-QFAAS chromatography technique can separate DBT, TBT, and TPhT with good performance which is shown by the chromatographic parameters produced. Mots clés : Organo-étains, spéciation, chromatographie en phase inverse par appariement d'ions

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Organotin Compounds Analysis

Lee

Chen

2010

Analysis of Endocrine Disrupting Compounds in Food

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Application of supported liquid membrane probe for extraction and preconcentration of organotin compounds from environmental water samples

Cited by 24 publications

References 33 publications

Speciation of alkyllead in aqueous samples with application of liquid membrane probe for extraction and preconcentration

Speciation of alkyllead in aqueous samples with application of liquid membrane probe for extraction and preconcentration

Ion-pair reversed-phase chromatography for speciation of organotin compounds

Organotin Compounds Analysis

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