HAN Jin-zhi,LI Ya-ru,LUO Lin,et al.Rapid Detection of Tetrodotoxin in Aquatic Products by Colloidal Gold Immunochromatography Assay[J].Journal of Instrumental Analysis,2023,42(12):1598-1606.
HAN Jin-zhi,LI Ya-ru,LUO Lin,et al.Rapid Detection of Tetrodotoxin in Aquatic Products by Colloidal Gold Immunochromatography Assay[J].Journal of Instrumental Analysis,2023,42(12):1598-1606. DOI: 10.19969/j.fxcsxb.23062703.
Rapid Detection of Tetrodotoxin in Aquatic Products by Colloidal Gold Immunochromatography Assay
The aim of this paper is to establish a rapid detection method for tetrodotoxin by colloidal gold immunochromatography assay(GICA). Monoclonal antibody specific for tetrodotoxin was labelled with colloidal gold as tracers. The effects of pH,antigen and antibody concentration,ion concentration,surfactant type and sample pretreatment on the performance of GICA were carefully investigated. The results showed that under the optimal conditions,the quantitative detection limit of the proposed assay for tetrodotoxin was 0.5 ng/mL,the linear range was 0.8-10.6 ng/mL,and the qualitative detection limit was 12.0 ng/mL. The spiked recoveries for tetrodotoxin in pufferfish、nassariidae samples ranged from 70.5%-110% with relative standard deviations of 3.7%-7.1%,and the results were similar to those of the LC-MS/MS method. Compared with the traditional analytical techniques,the proposed GICA showed better feasibility,practicality and superiority for rapid detection in the field.
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