A Very Simple Method for Detection of Bisphenol A in Environmental Water by Heme Signal Amplification

Abstract

The detection of bisphenol A (BPA) was carried out using several simplified electrochemical sensors in which electroactive materials Heme, dopamine (DA), β-cyclodextrins (β-CD) or Fc-ECG were deposited on screen-printed electrodes (SPEs) through one-step. The preparation of the developed sensors were verified by SEM, CV and DPV. Results shown that Heme/SPE sensor demonstrated notable electro-catalytic capabilities and a greater current response than other sensors for BPA detection and optimal operating conditions were determined. The current response vs concentration of BPA showed a linear relationship in the range of 0.05–0.50 μmol·l−1, the concentration limit of detection (S/N = 3) as 5.0 nmol·l−1 and 0.0013 μA·μM−1·cm−2 as the sensitivity of detection. There were no interferences arising from common elements that relate to BPA. Heme/SPE was applied for BPA detection in bottle drinking water, tap water and lake water; findings showed a total R.S.D. of less than 3.1% and average recovery from 95.0 to 104.0%. These results showed that the actual application of BPA detection was rapid and precise when placed in environmental water and even useful for safety verification.

Simultaneous Square Wave Voltammetric Detection of Endocrine-Disrupting Agents Using a Nanocomposite of Magnetic Fe3O4Nanorods and Poly(3,4-Methylenedioxy)aniline

“…1 In addition, several groups have performed the electrochemical detection of 4-NP alone using modified electrodes with various nanocomposites consisting of gold− zinc sulfide nanocomposite nanorods, 13 carbohydrate-derived nitrogen-doped hierarchical porous carbon, 14 and ultrathin sulfur-doped graphitic carbon nitride nanosheets. 15 Moreover, Arfin et al 16 used a graphene oxide−zinc oxide nanocomposite for the detection of phenol, while Bolat et al 17 and Feng et al 18 reported a poly(cetyltrimethylammonium bromide)multiwalled carbon nanotube-based composite and hememodified screen printed electrodes, respectively, that can only detect BPA. There are only a few studies that have used nanocomposites comprising polyaniline and magnetite nanorods for the simultaneous electrochemical detection of phenolic pollutants.…”

The construction of a simple sensor for the simultaneous detection of nitrite and thiosulfate by heme catalysis

“…Our group previously reported that the Heme/SPE sensor enhanced current responses for UA, AA, DA and BPA catalysis due to the electrocatalytic ability of heme. 23,24 As . Additional analyses examining the ability for detection of NO 2 À and S 2 O 3 2À were consequently undertaken.…”

Convenient Heme Nanorod Modified Electrode for Quercetin Sensing by Two Common Electrochemical Methods

“…Therefore, it is important to find the right modifier. Heme plays an important role in the construction of many sensors because that Heme can amplify the signal of the detected substances [21][22][23][24][25].…”