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author:

Luo, Fang (Luo, Fang.) [1] (Scholars:罗芳) | Zhan, Linxiu (Zhan, Linxiu.) [2] | Deng, Ye (Deng, Ye.) [3] | Qiao, Kun (Qiao, Kun.) [4] | Pan, Nan (Pan, Nan.) [5] | Weng, Zuquan (Weng, Zuquan.) [6] (Scholars:翁祖铨) | Lin, Cuiying (Lin, Cuiying.) [7] (Scholars:林翠英) | Qiu, Bin (Qiu, Bin.) [8] (Scholars:邱彬) | Lin, Zhenyu (Lin, Zhenyu.) [9] (Scholars:林振宇)

Indexed by:

EI Scopus SCIE

Abstract:

Point-of-care testing (POCT) has experienced rapid development owing to its advantages of rapid testing, low cost and strong operability, making it indispensable for analyte detection in outdoor or rural areas. In this study, we propose a novel method for the detection of aflatoxin B1 (AFB1) using a dual-signal readout approach within a unified system. This method employs dual channel modes, namely visual fluorescence and weight measurements, as the signal readouts. Specifically, a pressure-sensitive material is utilized as a visual fluorescent agent, its signal can be quenched in the presence of high oxygen pressure. Additionally, an electronic balance, commonly used for weight measurement, is adopted as another signal device, where the signal is generated through the catalytic decomposition of H2O2 by platinum nanoparticles. The experimental results demonstrate that the proposed device enables accurate AFB1 detection within the concentration range of 1.5-32 & mu;g mL-1, with a detection limit of 0.47 & mu;g mL-1. Moreover, this method has been successfully applied for practical AFB1 detection with satisfactory results. Notably, this study pioneers the use of a pressure-sensitive material as a visual signal in POCT. By addressing the limitations of single-signal readout approaches, our method fulfills requirements of intuitiveness, sensitivity, quantitative analysis and reusability.

Keyword:

Dual-mode readout Fluorescence Platinum nanoparticles Point-of-care testing

Community:

  • [ 1 ] [Luo, Fang]Fuzhou Univ, Coll Biol Sci & Engn, Fuzhou 350116, Fujian, Peoples R China
  • [ 2 ] [Zhan, Linxiu]Fuzhou Univ, Coll Biol Sci & Engn, Fuzhou 350116, Fujian, Peoples R China
  • [ 3 ] [Deng, Ye]Fuzhou Univ, Coll Biol Sci & Engn, Fuzhou 350116, Fujian, Peoples R China
  • [ 4 ] [Weng, Zuquan]Fuzhou Univ, Coll Biol Sci & Engn, Fuzhou 350116, Fujian, Peoples R China
  • [ 5 ] [Luo, Fang]Fuzhou Univ, Coll Chem, MOE Key Lab Anal & Detect Food Safety & Biol, Fujian Prov Key Lab Anal & Detect Technol Food Saf, Fuzhou 350116, Fujian, Peoples R China
  • [ 6 ] [Zhan, Linxiu]Fuzhou Univ, Coll Chem, MOE Key Lab Anal & Detect Food Safety & Biol, Fujian Prov Key Lab Anal & Detect Technol Food Saf, Fuzhou 350116, Fujian, Peoples R China
  • [ 7 ] [Deng, Ye]Fuzhou Univ, Coll Chem, MOE Key Lab Anal & Detect Food Safety & Biol, Fujian Prov Key Lab Anal & Detect Technol Food Saf, Fuzhou 350116, Fujian, Peoples R China
  • [ 8 ] [Lin, Cuiying]Fuzhou Univ, Coll Chem, MOE Key Lab Anal & Detect Food Safety & Biol, Fujian Prov Key Lab Anal & Detect Technol Food Saf, Fuzhou 350116, Fujian, Peoples R China
  • [ 9 ] [Qiu, Bin]Fuzhou Univ, Coll Chem, MOE Key Lab Anal & Detect Food Safety & Biol, Fujian Prov Key Lab Anal & Detect Technol Food Saf, Fuzhou 350116, Fujian, Peoples R China
  • [ 10 ] [Lin, Zhenyu]Fuzhou Univ, Coll Chem, MOE Key Lab Anal & Detect Food Safety & Biol, Fujian Prov Key Lab Anal & Detect Technol Food Saf, Fuzhou 350116, Fujian, Peoples R China
  • [ 11 ] [Qiao, Kun]Fisheries Res Inst Fujian, Key Lab Cultivat & High Value Utilizat Marine Orga, Xiamen 361013, Peoples R China
  • [ 12 ] [Pan, Nan]Fisheries Res Inst Fujian, Key Lab Cultivat & High Value Utilizat Marine Orga, Xiamen 361013, Peoples R China

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Source :

ANALYTICA CHIMICA ACTA

ISSN: 0003-2670

Year: 2023

Volume: 1273

5 . 7

JCR@2023

5 . 7 0 0

JCR@2023

ESI Discipline: CHEMISTRY;

ESI HC Threshold:39

JCR Journal Grade:1

CAS Journal Grade:1

Cited Count:

WoS CC Cited Count: 4

SCOPUS Cited Count: 4

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 1

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