“…The association of this strategy with electrochemical transducers significantly lowered the detection limits, especially when stripping voltammetry was employed for the determination of elements [17,46,47]. The coordination of metal ions with proteins [74], aminoacids [17,[75][76][77][78][79], synthetized peptides [70], hormones (melatonine [80] and oxytocin [7]), DNA strands [17,46,[81][82][83], and a neurotransmitter (neurokinin B [38]) were exploited to achieve detection limits as low as 0.80 ag L −1 [81]. The selected articles regarding this mechanism are displayed in Table 1.…”