Electrochemistry Application — Highly sensitive and selective electrochemical sensor for carbendazim detection in fruit juice using novel bi-metallic metal organic framework anchored graphite rod electrode

3 measurement groups · 11 results

Reported values remain attached to the sample, method, conditions, extraction quality and source location that produced them.

cyclic voltammetry comparison

Voltammetry

Self-standing Ni-Fe(PDC)/GR electrode · Electrode

0.1 M PBS pH 7 with 5 uM carbendazim; scan rate 50 mV s^-1; three-electrode setup with Pt counter, Ag/AgCl/KCl reference, and MOF-deposited graphite rod working electrode.

Geometry: self-standing rod electrode
Context: target electrode compared with bare graphite rod and pure MOF electrode
Measurement source: 3 · 2.4. Electrochemical study · Fig. 4a

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
bare graphite carbendazim redox response	no redox peak	—	—	Qualitative Qualitative	6 · 3.7. Cyclic voltammetry study · Fig. 4a
Ni-Fe(PDC)/GR oxidation peak potentialMarked as a best value within this paper	around 0.98 V	—	—	Text Approximate	6 · 3.7. Cyclic voltammetry study · Fig. 4a
pure MOF oxidation peak potential	0.91 V	—	—	Text Rounded Reported	6 · 3.7. Cyclic voltammetry study · Fig. 4a

cyclic voltammetry scan-rate study

Voltammetry

Self-standing Ni-Fe(PDC)/GR electrode · Electrode

0.1 M PBS pH 7 containing 5.0 uM carbendazim; scan rates 5-100 mV s^-1.

Temperature: 298
Geometry: self-standing rod electrode
Context: target composite electrode
Measurement source: 6 · 3.7. Cyclic voltammetry study · Fig. 4b-d

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
charge-transfer constant KsMarked as a best value within this paper	9.45 s^-1	—	—	Calculated From Reported Exact Reported	7 · 3.7. Cyclic voltammetry study
anodic peak current versus square-root scan-rate slope	Ia (mA) = 0.02218 v^1/2 + 0.03366; R2 = 0.99154	—	R2 = 0.99154; RSD = 1.15%	Text Exact Reported	6 · 3.7. Cyclic voltammetry study · Fig. 4c
Ea versus ln(scan-rate) slope	Ea (V) = 0.01125 ln v + 0.87968; R2 = 0.99533	—	R2 = 0.99533	Text Exact Reported	7 · 3.7. Cyclic voltammetry study · Fig. 4d
electrochemically active area of bare electrode	0.0012 cm2	—	—	Text Exact Reported	7 · 3.7. Cyclic voltammetry study
electrochemically active area of MOF-modified electrodeMarked as a best value within this paper	0.0109 cm2	—	—	Text Exact Reported	7 · 3.7. Cyclic voltammetry study
calculated electron transfer number	2.28; close to theoretical value 2	—	—	Calculated From Reported Rounded Reported	7 · 3.7. Cyclic voltammetry study

DPV pH optimisation

Voltammetry

Self-standing Ni-Fe(PDC)/GR electrode · Electrode

DPV of 10 uM carbendazim in 0.1 M PBS over pH 5.0-11.0 at Ni-Fe(PDC)/GR.

Geometry: self-standing rod electrode
Context: target composite electrode
Measurement source: 8 · 3.7. Cyclic voltammetry study · Fig. 6d,e

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
peak potential versus pH slope	-52 mV pH^-1	-0.052 V pH^-1	RSD = 2.21%; R2 = 0.99571	Text Rounded Reported	8 · 3.7. Cyclic voltammetry study · Fig. 6e
optimal PBS pH for carbendazim sensingMarked as a best value within this paper	pH 7.0	—	—	Text Exact Reported	8 · 3.7. Cyclic voltammetry study · Fig. 6d,e