Sensing Application — Metal-organic framework nanomaterials as novel signal probes for electron transfer mediated ultrasensitive electrochemical immunoassay

Measurement evidence

Sensing Application

Metal-organic framework nanomaterials as novel signal probes for electron transfer mediated ultrasensitive electrochemical immunoassay · Liu T.-Z., Hu R., Zhang X. et al. · Analytical Chemistry · 2016 · 12516-12523

5 measurement groups · 23 results

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

DPV calibration for CRP

Au-MOFs-Ab2-CRP/anti-CRP/Pt-COFs/GCE immunosensor · Electrode

Electrochemical response to a series of CRP target concentrations under optimised conditions.

Geometry
sandwich immunosensor on Pt-COFs/GCE
Context
full application construct
Measurement source
6 · Analytical Performance · Figure 6
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
calibration equation intercept9.796 x 10^-7Text
Exact Reported
6 · Analytical Performance · Figure 6b
calibration equation slopeMarked as a best value within this paperDelta I_peak = 8.1135 x 10^-6 lg C + 9.796 x 10^-7Text
Exact Reported
6 · Analytical Performance · Figure 6b
CRP linear dynamic range upper boundMarked as a best value within this paper400 ng/mLText
Exact Reported
6 · Analytical Performance · Figure 6
CRP linear dynamic range lower boundMarked as a best value within this paper1 ng/mLText
Exact Reported
6 · Analytical Performance · Figure 6
CRP detection limitMarked as a best value within this paper0.2 ng/mL determined by 3delta/slopeText
Exact Reported
6 · Analytical Performance · Figure 6

DPV optimisation

Au-MOFs-Ab2-CRP/anti-CRP/Pt-COFs/GCE immunosensor · Electrode

Optimised pH, anti-CRP concentration, anti-CRP incubation time, and CRP incubation time based on immunosensor response.

Geometry
sandwich immunosensor on Pt-COFs/GCE
Context
full application construct
Measurement source
6 · Optimization of the Experimental Conditions of the Immunoassay · Figure 5
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
optimal anti-CRP concentrationMarked as a best value within this paper40 ug/mLText
Exact Reported
6 · Optimization of the Experimental Conditions of the Immunoassay · Figure 5b
optimal anti-CRP incubation timeMarked as a best value within this paper60 minText
Exact Reported
6 · Optimization of the Experimental Conditions of the Immunoassay · Figure 5c
optimal CRP incubation timeMarked as a best value within this paper60 minText
Exact Reported
6 · Optimization of the Experimental Conditions of the Immunoassay · Figure 5d
optimal pHMarked as a best value within this paperpH 4.5Text
Exact Reported
6 · Optimization of the Experimental Conditions of the Immunoassay · Figure 5a

replicate precision, CV cycling stability, storage stability, regeneration test

Au-MOFs-Ab2-CRP/anti-CRP/Pt-COFs/GCE immunosensor · Electrode

Five replicate measurements at 20 ng/mL CRP; 100 successive CV scans; storage in pH 7.4 PBS at 4 C for 1 week; urea soaking for regeneration.

Geometry
sandwich immunosensor on Pt-COFs/GCE
Context
full application construct
Measurement source
6 · Precision, Reproducibility, Stability, and Reusability of Immunosensor
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
response retained after 100 CV scans96% of the initial response after 100 CV scansText
Exact Reported
6 · Precision, Reproducibility, Stability, and Reusability of Immunosensor
intra-assay variation coefficient3.8% with the same concentration of CRP (20 ng/mL)Text
Exact Reported
6 · Precision, Reproducibility, Stability, and Reusability of Immunosensor
storage response retention after one week90% of the initial value after storage in pH 7.4 PBS at 4 C for 1 weekText
Exact Reported
6 · Precision, Reproducibility, Stability, and Reusability of Immunosensor

DPV selectivity test

Au-MOFs-Ab2-CRP/anti-CRP/Pt-COFs/GCE immunosensor · Electrode

Response to CRP at 100 ng/mL compared with CEA, HCG, Gly, and Glu interferents at 1 ug/mL.

Geometry
sandwich immunosensor on Pt-COFs/GCE
Context
full application construct
Measurement source
6 · Analytical Performance · Figure 7
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
CEA interferent currentapproximately -3.8 uA at 1 ug/mL CEAvisual estimate from bar chartFigure Axis
Approximate
6 · Analytical Performance · Figure 7
CRP selectivity currentapproximately -15 uA at 100 ng/mL CRPvisual estimate from bar chartFigure Axis
Approximate
6 · Analytical Performance · Figure 7
Glu interferent currentapproximately -2.3 uA at 1 ug/mL Gluvisual estimate from bar chartFigure Axis
Approximate
6 · Analytical Performance · Figure 7
Gly interferent currentapproximately -2.4 uA at 1 ug/mL Glyvisual estimate from bar chartFigure Axis
Approximate
6 · Analytical Performance · Figure 7
HCG interferent currentapproximately -1.8 uA at 1 ug/mL HCGvisual estimate from bar chartFigure Axis
Approximate
6 · Analytical Performance · Figure 7

spiked human serum recovery

Au-MOFs-Ab2-CRP/anti-CRP/Pt-COFs/GCE immunosensor · Electrode

CRP added to diluted 10% serum samples; recovery experiment at 50.00 ng/mL added CRP.

Geometry
sandwich immunosensor on Pt-COFs/GCE
Context
full application construct
Measurement source
7 · Application in Analysis of Serum Samples · Table 1
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
serum spike concentration50.00 ng/mL addedTable
Exact Reported
7 · Application in Analysis of Serum Samples · Table 1
average serum recovery95.12%Table
Exact Reported
7 · Application in Analysis of Serum Samples · Table 1
serum found concentration replicate 146.65 ng/mLTable
Exact Reported
7 · Application in Analysis of Serum Samples · Table 1
serum found concentration replicate 246.52 ng/mLTable
Exact Reported
7 · Application in Analysis of Serum Samples · Table 1
serum found concentration replicate 349.51 ng/mLTable
Exact Reported
7 · Application in Analysis of Serum Samples · Table 1
serum recovery RSD3.56%Table
Exact Reported
7 · Application in Analysis of Serum Samples · Table 1