Determination of trace levels of dinitrophenolic compounds by microporous membrane liquid-liquid extraction in environmental water samples

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Determination of trace levels of dinitrophenolic compounds by microporous membrane liquid-liquid extraction in environmental water samples. / Bartolome, Luis; Lezamiz, Jon; Etxebarria, Nestor; Zuloaga, Olatz; Jönsson, Jan Åke.

In: Journal of Separation Science, Vol. 30, No. 13, 2007, p. 2144-2152.

Research output: Contribution to journalArticle

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TY - JOUR

T1 - Determination of trace levels of dinitrophenolic compounds by microporous membrane liquid-liquid extraction in environmental water samples

AU - Bartolome, Luis

AU - Lezamiz, Jon

AU - Etxebarria, Nestor

AU - Zuloaga, Olatz

AU - Jönsson, Jan Åke

N1 - The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Analytical Chemistry (S/LTH) (011001004)

PY - 2007

Y1 - 2007

N2 - A fast and simple hollow fibre-based microporous membrane liquid-liquid extraction (MMLLE) method is proposed for the determination of trace levels of dinitrophenolic compounds in water samples. The optimization step was performed using a three-variables Doehlert matrix design, involving the fibre length, the quantity of trioctylphosphine oxide (TOPO) in the acceptor phase and the extraction time. Using the established experimental conditions, some other parameters such as stirring speed, salt content, humic acids and different organic solvents as the acceptor phase were studied. Validation of the method included calibration experiments, linearity studies and determination of method LOD (MLD). The RSD was around 11% in all the experiments on different days at different concentrations. Separation and detection of four dinitrophenols were performed in 10 min with an RP-LC and a C-8 column ACN-citric buffer gradient elution and diode array detection.

AB - A fast and simple hollow fibre-based microporous membrane liquid-liquid extraction (MMLLE) method is proposed for the determination of trace levels of dinitrophenolic compounds in water samples. The optimization step was performed using a three-variables Doehlert matrix design, involving the fibre length, the quantity of trioctylphosphine oxide (TOPO) in the acceptor phase and the extraction time. Using the established experimental conditions, some other parameters such as stirring speed, salt content, humic acids and different organic solvents as the acceptor phase were studied. Validation of the method included calibration experiments, linearity studies and determination of method LOD (MLD). The RSD was around 11% in all the experiments on different days at different concentrations. Separation and detection of four dinitrophenols were performed in 10 min with an RP-LC and a C-8 column ACN-citric buffer gradient elution and diode array detection.

KW - water samples

KW - MMLLE

KW - dinitrophenols

KW - HPLC-DAD

U2 - 10.1002/jssc.200600509

DO - 10.1002/jssc.200600509

M3 - Article

VL - 30

SP - 2144

EP - 2152

JO - Journal of Separation Science

JF - Journal of Separation Science

SN - 1615-9314

IS - 13

ER -