Optimisation of the extraction of arsenic species from mussels with low power focused microwaves by applying a Doehlert design
作者： T Dagnac , A Padró , R Rubio , G Rauret
DOI: 10.1016/S0003-2670(98)00179-2
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摘要: Abstract The extraction of arsenic species from mussel tissues is performed by using low power focused microwaves. compounds are separated with anion-exchange liquid chromatography and detected inductively coupled plasma mass spectrometry (ICP-MS). optimised applying a sequential Doehlert design, which allows us to quantify the influence microwave power, exposure time relative proportions methanol/water in medium. Well correlated second-order models fitted determine yields arsenobetaine (AsBet), probable arsenosugar (AsS), monomethylarsonate (MMA), dimethylarsinate (DMA) As (V). By microwaves sample preparation much shorter than other methods. At powers close 40 W times less 4 min (55/45), whole yield reaches 85%. proportion respect total 68% AsBet, 14% AsS+MMA 2% DMA.
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