A Simple and Sensitive Non Modified Acetylene Black-Polyurethane Composite Electrode in the Determination of Bisphenol-A in Water Samples

Silva, Rafael da; Cervini, Priscila; Cavalheiro, Éder T. G.

doi:10.21577/0103-5053.20230179

Acessibilidade / Reportar erro

Brasil

Journal of the Brazilian Chemical Society

Español English

Brasil

Español English

sumário « anterior atual seguinte »

Sumário

Article • J. Braz. Chem. Soc. 35 (5) • 2024 • https://doi.org/10.21577/0103-5053.20230179 copy

A Simple and Sensitive Non Modified Acetylene Black-Polyurethane Composite Electrode in the Determination of Bisphenol-A in Water Samples

Authorship SCIMAGO INSTITUTIONS RANKINGS

A new composite based on acetylene black (AB) and vegetable derivative polyurethane (PU) was prepared and evaluated in the determination of bisphenol A (BPA) in water samples using a differential pulse voltammetric procedure (DPV). DPV pulse amplitude of 50 mV, 10 mV s^-1 scan rate and 0.10 mol L^-1 phosphate buffer were selected for the analytical studies. An analytical curve was obtained with linear range of 0.1-10 µmol L^-1 BPA and a limit of detection of 14.1 nmol L^-1. The proposed electrode was used without modifiers and with high sensitivity and low-cost preparation in the determination of BPA in both tap and artesian well waters spiked with 0.30 µmol L^-1, with relative errors of 0.81 and 1.0% and recoveries of 102 and 105%, respectively. Interferences from oxytetracycline, furosemide, catechol, methyl viologen chloride and fenitrothion could be overcome by appropriate current measuring, while diclofenac did not interfere.

Keywords:
composite electrode; bisphenol-A; voltammetric determination; endocrine disruptor

Electrode	Linear range / (mmol L^-1)	LOD / (mmol L^-1)	Analytical technique	Reference
Composite electrodes
MIP/ABPE^a a Carbon paste electrode based on acetylene black-chitosan;	0.08-10.0	0.06	LSV	36
GR/ABPE^b b carbon paste electrode based on acetylene black-graphene;	0.0008-100.0	0.0006	LSV	37
S-CHIT/ABPE^c c carbon paste electrode based on salicylaldehyde-modified chitosan;	0.04-10.0	0.02	LSV	38
Gr/MIPs/ABPE^d d carbon paste electrode based on acetylene black-graphene-4-vinyl pyridine-chitosan;	0.0000014-1200	0.00000042	DPV	39
MIP-GR/ABPE^e e carbon paste electrode based on acetylene black-chitosan-graphene;	0.008-20.0	0.006	LSV	40
MIPs-AB/GCE^f f acetylene black-chitosan on glassy carbon electrode;	0.005-0.2; 0.5-10.0	0.002	DPV	41
AB-DHP/GCE^g g acetylene black-dihexadecyl hydrogen phosphate on glassy carbon electrode;	0.02-5.0	0.006	DPV	42
AB-CS-AU^h h acetylene black-chitosan-gold nanoparticles on glassy carbon electrode;	0.0075-1.0	0.0064	DPV	43
Unmodified electrodes
CPEⁱ i carbon paste electrode based on graphite and paraffin oil;	0.025-1.0	0.0079	DPV	49
ITO^j j indium tin oxide electrode;	5.0-120.0	0.29	DPV	50
BDD^k k boron-doped diamond electrode;	0.44-5.2	0.21	DPV	51
EG^l l exfoliated graphite electrode;	1.56-50.0	0.76	DPV	52
This work
ABPUE^m m acetylene black polyurethane electrode. DPV: differential pulse voltammetric procedure; LSV: linear sweep voltammetry.	0.10-1.0	0.014	DPV	-

Water samples	Addition	Added / (mmol L^-1)	Found / (mmol L^-1)	Recovery^a a Average ± standard deviation (SD), n = 3. / %
Tap	1	0.20	0.22 ± 0.03	110
	2	0.40	0.39 ± 0.02	97.5
	3	0.60	0.60 ± 0.01	100
			Average ± SD^a a Average ± standard deviation (SD), n = 3.	102 ± 5
Artesian well	1	0.20	0.23 ± 0.02	115
	2	0.40	0.40 ± 0.01	100
	3	0.60	0.60 ± 0.00₄	100
			Average ± SD^a a Average ± standard deviation (SD), n = 3.	105 ± 7

Interferent	C_interf / (mmol L^-1)	Ip / μA		Interference^b b A: when current was measured by background subtraction at the peak potential; B: when the absolute current, without background subtraction was measured at the peak potential. Cinterf: concentration of interferent; BPA: bisphenol A; Ip:peak current. / %
Interferent	C_interf / (mmol L^-1)	BPA	BPA + interferent^a a Average ± standard deviation; n = 3; background subtraction at peak potential;	A	B
Oxytetracycline	0.15 0.30 0.60	0.042 ± 0.002	0.035 ± 0.001 0.033 ± 0.0003 0.032 ± 0.0001	-17 -21 -24	0.0 +0.2 +0.9
	0.15 0.30 0.60	0.042 ± 0.002	0.035 ± 0.001 0.033 ± 0.0003 0.032 ± 0.0001	-17 -21 -24	0.0 +0.2 +0.9
Furosemide	0.15 0.30 0.60	0.042 ± 0.001	0.039 ± 0.001 0.036 ± 0.001 0.033 ± 0.001	-7.1 -14 -21	+1.2 +2.0 +3.2
	0.15 0.30 0.60	0.042 ± 0.001	0.039 ± 0.001 0.036 ± 0.001 0.033 ± 0.001	-7.1 -14 -21	+1.2 +2.0 +3.2
Catechol	0.15 0.30 0.60	0.042 ± 0.001	0.038 ± 0.0002 0.035 ± 0.001 0.034 ± 0.001	-7.9 -17 -19	+2.8 +4.7 +6.1
	0.15 0.30 0.60	0.042 ± 0.001	0.038 ± 0.0002 0.035 ± 0.001 0.034 ± 0.001	-7.9 -17 -19	+2.8 +4.7 +6.1
Methyl viologen dichloride	0.15 0.30 0.60	0.042 ± 0.002	0.066 ± 0.001 0.070 ± 0.002 0.072 ± 0.0005	+57 +67 +72	+2.8 +5.4 +7.5
	0.15 0.30 0.60	0.042 ± 0.002	0.066 ± 0.001 0.070 ± 0.002 0.072 ± 0.0005	+57 +67 +72	+2.8 +5.4 +7.5
Fenitrothion	0.15 0.30 0.60	0.041 ± 0.001	0.042 ± 0.001 0.052 ± 0.001 0.066 ± 0.002	+2.4 +27 +61	3.6 7.2 14.1
	0.15 0.30 0.60	0.041 ± 0.001	0.042 ± 0.001 0.052 ± 0.001 0.066 ± 0.002	+2.4 +27 +61	3.6 7.2 14.1
Diclofenac	0.15 0.30 0.60	0.042 ± 0.001	0.042 ± 0.001 0.042 ± 0.001 0.042 ± 0.001	- - -	- - -
	0.15 0.30 0.60	0.042 ± 0.001	0.042 ± 0.001 0.042 ± 0.001 0.042 ± 0.001	- - -	- - -

Sociedade Brasileira de Química Instituto de Química - UNICAMP, Caixa Postal 6154, 13083-970 Campinas SP - Brazil, Tel./FAX.: +55 19 3521-3151 - São Paulo - SP - Brazil
E-mail: office@jbcs.sbq.org.br

Acompanhe os números deste periódico no seu leitor de RSS

[1] *e-mail: cavalheiro@iqsc.usp.br