Informace o publikaci

Comparison of extraction techniques for isolation of steroid oestrogens in environmentally relevant concentrations from sediment

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SADÍLEK Jan SPÁLOVSKÁ Petra VRANA Branislav VAVROVA Milada MARŠÁLEK Blahoslav ŠIMEK Zdeněk

Rok publikování 2016
Druh Článek v odborném periodiku
Časopis / Zdroj International Journal of environmental analytical Chemistry
Fakulta / Pracoviště MU

Přírodovědecká fakulta

Citace
www http://www.tandfonline.com/doi/abs/10.1080/03067319.2016.1232718?journalCode=geac20
Doi http://dx.doi.org/10.1080/03067319.2016.1232718
Obor Vliv životního prostředí na zdraví
Klíčová slova Oestrogens; sediment; Soxhlet warm extraction (SWE); accelerated solvent extraction (ASE); microwave-assisted extraction (MAE); quick easy cheap effective rugged safe (QuEChERS)
Popis The comparison of four extraction techniques for isolation of five native and one labelled steroid oestrogens from sediment was described. The three conventional extraction techniques Soxhlet warm extraction (SWE), accelerated solvent extraction (ASE), microwave-assisted extraction (MAE) and a promising technique QuEChERS were tested for isolation of low environmentally relevant oestrogen concentrations using different extraction conditions. The least expensive and time-consuming method QuEChERS provided the best extraction recoveries (53-84%) from all techniques. MAE achieved the highest recovery from conventional techniques for less polar oestrogens using dichloromethane: acetone 3:1 mixture as an extraction solvent (50-71%), but for extraction of the whole group of oestrogens including more polar estriol acetone or methanol must be used. ASE provided higher extraction recoveries using dichloromethane at 60 degrees C (53-74%) for less polar oestrogens. However, the repeatability of results was unsatisfactory and recoveries using other extraction conditions were lower than for MAE. The most time-consuming SWE achieved the worst extraction recoveries and for isolation of low oestrogen concentrations from sediments, it is completely unsuitable.
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