(EN)
An electrochemical biosensor for quantifying one or more redox species in a liquid sample comprising a background electrochemical activity, wherein said biosensor comprises:(i) an electrode system;(ii) a filter means comprising a sample loading position; and(iii) a charge transfer surface between said filter means and said electrode system;wherein said filter means separates said sample loading position from said charge transfer surface by an amount of filter material capable of providing a tangential peak height for said background electrochemical activity of less than 30% of the tangential peak height for said redox species; and said biosensor comprises an intermediate layer between said filter means and said charge transfer surface, wherein said intermediate layer has a lower energy requirement to transfer said liquid sample to said charge transfer surface than said filter material.
(ZH) 一种电化学生物传感器，它用于对包含本底电化学活性的液体样品中一个或多个氧化还原物种的定量，其中所述的生物传感器包括：(1)电极系统；(2)包括装料位置的过滤器装置；(3)在所述过滤器装置和电极系统之间的电荷转移表面；其中过滤器装置利用适量过滤材料把装料位置与电荷转移表面分开，该过滤材料能够提供的本底电化学活性切线峰高小于该氧化还原物种切向峰高的30%；该生物传感器还包括过滤器装置和电荷转移表面之间的中间层，其中所述的中间层把液体样品转送到电荷转移表面所需能量较转送到过滤器材料的少。
