Determination of a natural (17β-estradiol) and a synthetic (17α-ethinylestradiol) hormones in pharmaceutical formulations and urine by adsorptive stripping voltammetry

Voltammetric Detection of Ethinylestradiol in Water and Synthetic Urine Samples using a Ni(II) Phthalocyanine/Iron Oxide Nanocomposite Electrode

“…Au/Fe 3 O 4 @TA/MWNT/GCE [15] DPV 3.3 × 10 À 9 1.0 × 10 À 8 to 1.2 × 10 À 4 GCE/rGO/RuO 2 [16] DPV 2.0 × 10 À 9 5.5 × 10 À 8 to 1.2 × 10 À 6 HMDE [32] SW-AdSV 4.95 × 10 À 8 4.95 × 10 À 8 to 4.9 × 10 À 7 MWCNTs/GCE/MPs/anti-EE2 [33] SWV 3.4 × 10 À 14 1.2 × 10 À 13 to 2.4 × 10 À 10 CPB/CPE [34] LSV 3.0 × 10 À 8 5 × 10 À 8 to 2 × 10 À 5 BDD [35] SWV 2.4 × 10 À 7 7.9 × 10 À 7 to 5.2 × 10 À 6 AgNP-SAE-CTAB [36] SCV 1.03 × 10 À 7 6.4 × 10 À 7 to 7.8 × 10 À 6 GCE/MWCNT/CoPc [37]; 2.2 h SWV 2.2 × 10 À 6 2.5 × 10 À 6 to 9 × 10 À 5…”

Core–Shell Nanocables Decorated with Carbon Spherical Shells and Silver Nanoparticles for Sensing Ethinylestradiol Hormone in Water Sources and Pills

“…8,9 Nevertheless, effective sensing can only be achieved if the sensing materials can offer high analytical performance in terms of sensitivity, selectivity, and stability. 10,11 Electrochemical detection of hormones has been made with fluorine-doped tin oxide electrodes, 12 indium tin oxide electrodes, 13 hanging mercury drop electrodes, 14 glassy carbon electrodes, 15 boron-doped diamond electrodes, 16 carbon paste electrodes, 17 screen-printed carbon electrodes, 18 and carbon papers 19 incorporated with carbon nanotubes, 15 reduced graphene oxide, 20 phthalocyanine, 13 and metal and metal oxide nanoparticles of gold, 15 silver, 21 palladium, 22 ruthenium, 23 and iron oxide. 13 One of the main challenges in designing electrochemical sensors for hormones is to reach high sensitivity, which is often provided by a large electrode surface area and efficient electron transfer, while specificity prevents interference of other compounds found in water matrices.…”

An electrochemical sensor modified with a molecularly imprinted polymer and carbon black for 17-β-estradiol detection

“…In this sense, the use of sensitive methodologies in determining E2 is very relevant in areas such as environmental monitoring. 7,8 Modied electrochemical sensors are a viable alternative for the detection of emerging contaminants, such as estrogenic phenolic compounds. 9,10 Wong et al describe a screen-printed disposable electrode modied with CuPc, P6LC and a Naon lm for sensitive determination of 17b-estradiol.…”

“…In this sense, the use of sensitive methodologies in determining E2 is very relevant in areas such as environmental monitoring. 7,8…”