Development of a Selective Enzyme-Linked Immunosorbent Assay for 1-Naphthol-the Major Metabolite of Carbaryl (1-Naphthyl N-Methylcarbamate)
作者:Petra M. Kramer、Maria-Pilar Marco、Bruce D. Hammock
DOI:10.1021/jf00040a019
日期:1994.4
selective enzyme-linked immunosorbent assay for 1-naphthol was developed. Eight rabbits were immunized with either [(5-hydroxy-2-naphthylenyl)oxy]acetic acid (2b)-BSA, [(5-hydroxy-1-naphthylenyl)oxy]acetic acid (4)-BSA, or 5-hydroxy-2-naphthoic acid (7)-KLH, and all sera were screened against 14 different coating antigens. From this screening procedure, five assays could be developed, using two 7-KLH antisera, 3907 and 3909. The assay with the least interference and the best reliability (7-KLH antiserum 3907, 1:9000, and coating antigen 2b-BSA, 1.5 mu g/mL) was further optimized and characterized. It showed an I-50 value of about 72 mu g/L, with a range of detection from 10 to 1000 mu g/L. There was no cross-reactivity with carbaryl, which makes this assay very suitable for the selective detection of 1-naphthol, for example, in undiluted human urine and in soil extract. The assay was tested in organic solvents and showed a tolerance of at least 10% solvent (acetone, acetonitrile, methanol).