Sensing Application — Controllable Construction of Two-Dimensional Conductive M3(HHTP)2 Nanorods for Electrochemical Sensing of Malachite Green in Fish

8 measurement groups · 45 results

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

DPV analysis of MG in fish samples with ELISA comparison

Voltammetry

Cu-MOF/CPE electrode · Electrode

Crucians exposed to 1 uM MG bath for 12 h; fish sampled over time; extracted samples measured in 5 mL 0.1 M PBS pH 7.0.

Geometry: Cu-MOF/CPE
Context: composite
Measurement source: main p.9, article p.22924 · Analysis of MG in Actual Samples · Table 1; Figure S23

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Fish sample 15 day MG by sensor	2.3 ng g-1	—	RSD 4.49%	Table Rounded Reported	main p.9, article p.22924 · Analysis of MG in Actual Samples · Table 1
Fish sample 0.5 day MG by sensor	66.6 ng g-1	—	RSD 3.53%	Table Rounded Reported	main p.9, article p.22924 · Analysis of MG in Actual Samples · Table 1
Fish sample 1 day MG by sensor	51.6 ng g-1	—	RSD 2.32%	Table Rounded Reported	main p.9, article p.22924 · Analysis of MG in Actual Samples · Table 1
Fish sample 7 day MG by sensor	11.4 ng g-1	—	RSD 3.76%	Table Rounded Reported	main p.9, article p.22924 · Analysis of MG in Actual Samples · Table 1
Fish sample 3 day MG by sensor	32.4 ng g-1	—	RSD 4.01%	Table Rounded Reported	main p.9, article p.22924 · Analysis of MG in Actual Samples · Table 1

Selective and competitive DPV tests

Voltammetry

Cu-MOF/CPE electrode · Electrode

0.1 uM MG with K+, Na+, Mg2+, Ca2+, Zn2+, Glu, serine, L-cysteine, UA, XA, HXA, CAP, TET, OTC and ERY interferents.

Geometry: Cu-MOF/CPE
Context: composite
Measurement source: main p.8, article p.22923 · Determination of MG · Figure 7

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Interference-test outcome	Current signal ratio did not change significantly under interference conditions.	—	—	Text Qualitative	main p.8, article p.22923 · Determination of MG · Figure 7
Metal-ion interferent concentration	0.5 uM metal ions	—	—	Caption Exact Reported	main p.8, article p.22923 · Determination of MG · Figure 7
Organic/antibiotic interferent concentration	1 uM Glu, serine, L-cy, UA, XA, HXA, CAP, TET, OTC and ERY	—	—	Caption Exact Reported	main p.8, article p.22923 · Determination of MG · Figure 7

DPV feasibility comparison for MG

Voltammetry

Cu-MOF/CPE electrode · Electrode

0.1 M PBS, pH 7.0, 200 nM MG; comparison of CPE, Cu-MOF/CPE, Ni-MOF/CPE and Co-MOF/CPE.

Geometry: Modified carbon paste electrodes
Context: composite_with_pristine_controls
Measurement source: main p.6, article p.22921 · Electrochemical Characteristics of MG · Figure 5A; Figure S12

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
CPE MG catalytic oxidation efficiency	7.34%	—	—	Calculated From Reported Rounded Reported	main p.7, article p.22922 · Electrochemical Characteristics of MG · Figure S14
Cu-MOF/CPE MG catalytic oxidation efficiencyMarked as a best value within this paper	47.93%	—	—	Calculated From Reported Rounded Reported	main p.7, article p.22922 · Electrochemical Characteristics of MG · Figure S14
Cu oxidation internal-reference peak	about -0.05 V	—	about	Text Approximate	main p.7, article p.22922 · Electrochemical Characteristics of MG · Figure 5A
MG oxidation peak potential	0.84 V	—	about	Text Approximate	main p.7, article p.22922 · Electrochemical Characteristics of MG · Figure 5A
CPE MG oxidation integral strength	0.114 uA V	—	—	Text Rounded Reported	SI p.S16 · DPV curves Cu-MOF/CPE and CPE · Figure S14
Cu-MOF/CPE MG oxidation integral strengthMarked as a best value within this paper	0.744 uA V	—	—	Text Rounded Reported	SI p.S16 · DPV curves Cu-MOF/CPE and CPE · Figure S14

Non-ratiometric DPV calibration

Voltammetry

Cu-MOF/CPE electrode · Electrode

0.1 M PBS pH 7.0; peak MG current versus concentration without ratiometric normalisation.

Geometry: Cu-MOF/CPE
Context: composite
Measurement source: main p.8, article p.22923 · Determination of MG · Figure S18

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Nonratiometric high-range slope	IMG = 0.000115 C + 0.0507	—	—	Text Rounded Reported	main p.8, article p.22923 · Determination of MG · Figure S18
Nonratiometric high-range R2	0.991	—	—	Text Rounded Reported	main p.8, article p.22923 · Determination of MG · Figure S18
Nonratiometric high-concentration linear range	300-1200 nM	—	—	Text Range	main p.8, article p.22923 · Determination of MG · Figure S18
Nonratiometric low-concentration linear range	5-300 nM	—	—	Text Range	main p.8, article p.22923 · Determination of MG · Figure S18
Nonratiometric MG detection limit	1.73 nM	—	—	Text Rounded Reported	main p.8, article p.22923 · Determination of MG · Figure S18
Nonratiometric low-range slope	IMG = 0.000265 C + 0.00201	—	—	Text Rounded Reported	main p.8, article p.22923 · Determination of MG · Figure S18
Nonratiometric low-range R2	0.993	—	—	Text Rounded Reported	main p.8, article p.22923 · Determination of MG · Figure S18

DPV condition optimisation

Voltammetry

Cu-MOF/CPE electrode · Electrode

Optimisation of Cu3(HHTP)2:graphite ratio, buffer system, PBS pH and MG accumulation time.

Geometry: Cu-MOF/CPE
Context: composite
Measurement source: main p.7, article p.22922 · Electrochemical Characteristics of MG · Figure 5B-D; Figures S13,S15

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Optimised accumulation timeMarked as a best value within this paper	200 s	—	—	Text Exact Reported	main p.7, article p.22922 · Electrochemical Characteristics of MG · Figure 5D
Optimised PBS concentrationMarked as a best value within this paper	0.1 M PBS	—	—	Text Exact Reported	SI p.S15 · Current ratios in different PBS concentrations · Figure S13
Optimised MOF:graphite powder mass ratioMarked as a best value within this paper	1:49	—	—	Text Exact Reported	main p.7, article p.22922 · Electrochemical Characteristics of MG · Figure 5B
Optimised PBS pHMarked as a best value within this paper	pH 7.0	—	—	Text Exact Reported	main p.7, article p.22922 · Electrochemical Characteristics of MG · Figure 5C

Ratiometric DPV calibration

Voltammetry

Cu-MOF/CPE electrode · Electrode

0.1 M PBS, pH 7.0; MG concentration increased from 5 to 1500 nM; linear ratiometric range 5-1000 nM.

Geometry: Cu-MOF/CPE
Context: composite
Measurement source: main p.8, article p.22923 · Determination of MG · Figure 6; Figure S17

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Ratiometric MG calibration intercept	-0.0923	—	—	Text Rounded Reported	main p.8, article p.22923 · Determination of MG · Figure 6B
Ratiometric MG calibration R2	0.996	—	—	Text Rounded Reported	main p.8, article p.22923 · Determination of MG · Figure 6B
Ratiometric MG calibration slope	Ip = 0.00602 C_MG - 0.0923	—	—	Text Rounded Reported	main p.8, article p.22923 · Determination of MG · Figure 6B
Ratiometric MG linear rangeMarked as a best value within this paper	5-1000 nM	—	—	Text Range	main p.8, article p.22923 · Determination of MG · Figure 6B
Ratiometric MG detection limitMarked as a best value within this paper	1.34 nM at S/N = 3	—	—	Calculated From Reported Rounded Reported	SI p.S29 · Calculation of detection limit for MG · Equation 2
Blank-sample standard deviation for LOD	sigma = 0.002729	—	—	Text Rounded Reported	SI p.S29 · Calculation of detection limit for MG · Equation 2
Comparative ELISA detection limit	0.27 nM	—	—	SI Table Rounded Reported	SI p.S30 · Table S1 · Table S1
This work Table S1 detection limitMarked as a best value within this paper	1.34 nM for Cu3(HHTP)2/CPE	—	—	SI Table Rounded Reported	SI p.S30 · Table S1 · Table S1

Repeated ratiometric DPV response

Voltammetry

Cu-MOF/CPE electrode · Electrode

0.1 M PBS pH 7.0 containing 0.5 uM MG; six repeated measurements and six independently prepared electrodes.

Geometry: Cu-MOF/CPE
Context: composite
Measurement source: main p.8, article p.22923 · Determination of MG · Figure S19

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Repeatability RSD	2.76% for six tests at 0.5 uM MG	—	—	Text Rounded Reported	main p.8, article p.22923 · Determination of MG · Figure S19A
Reproducibility RSD	3.85% for six Cu-MOF/CPE electrodes at 0.5 uM MG	—	—	Text Rounded Reported	main p.8, article p.22923 · Determination of MG · Figure S19B

DPV recovery/real-sample analysis for water and shrimp

Voltammetry

Cu-MOF/CPE electrode · Electrode

Fishing-pond water measured after filtration and pH adjustment; shrimp samples spiked/immersed with MG standards.

Geometry: Cu-MOF/CPE
Context: composite
Measurement source: SI p.S31 · Table S2 · Table S2

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Shrimp S1 MG by sensor	0 nM	—	RSD 0%	SI Table Exact Reported	SI p.S31 · Table S2 · Table S2
Shrimp S2 MG by sensor	23.4 nM; RSD 3.14%	—	RSD 3.14%	SI Table Rounded Reported	SI p.S31 · Table S2 · Table S2
Shrimp S3 MG by sensor	50.3 nM; RSD 2.79%	—	RSD 2.79%	SI Table Rounded Reported	SI p.S31 · Table S2 · Table S2
Shrimp S4 MG by sensor	99.6 nM; RSD 3.18%	—	RSD 3.18%	SI Table Rounded Reported	SI p.S31 · Table S2 · Table S2
Shrimp S5 MG by sensor	197.3 nM; RSD 4.83%	—	RSD 4.83%	SI Table Rounded Reported	SI p.S31 · Table S2 · Table S2
Water sample 100 nM spike found	Added 100 nM; found 98.8 nM; relative error 1.24%	—	relative error 1.24%	SI Table Rounded Reported	SI p.S31 · Table S2 · Table S2
Water sample 200 nM spike found	Added 200 nM; found 202.3 nM; relative error -1.16%	—	relative error -1.16%	SI Table Rounded Reported	SI p.S31 · Table S2 · Table S2
Water sample 20 nM spike found	Added 20 nM; found 19.1 nM; relative error 4.31%	—	relative error 4.31%	SI Table Rounded Reported	SI p.S31 · Table S2 · Table S2
Water sample 500 nM spike found	Added 500 nM; found 511.2 nM; relative error 2.24%	—	relative error 2.24%	SI Table Rounded Reported	SI p.S31 · Table S2 · Table S2
Water sample 50 nM spike found	Added 50 nM; found 48.9 nM; relative error 2.23%	—	relative error 2.23%	SI Table Rounded Reported	SI p.S31 · Table S2 · Table S2