These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: Surface plasmon resonance sensor for phosmet of agricultural products at the ppt detection level.
    Author: Song Y, Liu M, Wang S.
    Journal: J Agric Food Chem; 2013 Mar 20; 61(11):2625-30. PubMed ID: 23402473.
    Abstract:
    A surface plasmon resonance (SPR) immunoassay using a PH-BSA immobilized sensor chip was developed to measure phosmet in food samples. The in-competitive inhibition assay showed highly sensitive and good specificity of the cross-reactivity with analogue structure pesticides. The biosensor exhibited a linear detection range from 8.0 to 60.0 ng/L of phosmet with a lower detection limit of 1.6 ng/L (S/N = 3). The sensitivity obtained with the present SPR affinity biosensor was significantly higher than most of the sensors reported with different measurement methodologies for phosmet. A recovery test of pesticide quantification in peaches, apples, cabbages, and rapes was also studied. Good recoveries (86.4-102.8%) and coefficients of variation (CVs) (5.1-12.6%) were obtained in all cases. The SPR biosensor assay method was compared with cd-ELISA in terms of analysis time, antibody dosage, recoveries, precision, detection limit, pretreatment, and testing costs, and clear advantages could be seen over the traditional ELISA-based detection systems. The developed SPR method was suitable for the rapid quantitative or qualitative determination of phosmet in agricultural products.
    [Abstract] [Full Text] [Related] [New Search]