PMID- 18161572 OWN - NLM STAT- MEDLINE DCOM- 20080407 LR - 20131121 IS - 0360-1234 (Print) IS - 0360-1234 (Linking) VI - 43 IP - 1 DP - 2008 Jan TI - Development of enzyme immunoassay for detection of DDT. PG - 44-9 AB - Dichlorodiphenyltrichloroethane (DDT) is one of the persistent organic pollutants (POPs) widely found in the environment and in the general population. In this study, a direct competitive enzyme immunoassay (EIA) has been developed for the quantitative analysis of DDT. To generate a specific polyclonal antibody for EIA, p, p'-DDT was conjugated to porcine thyroglobulin for rabbit immunization. At optimized EIA conditions, the standard curves ranged from 0.137 to 100 ng/mL with the quantification limit of 0.41 ng/mL. The coefficients of variation (CV%) were 5.42-10.53% for intra-assay and 6.04-7.26% for inter-assay. Cross-reactivities with DDT metabolites (DDTs, including o, p'-DDT, p, p'-DDD, o, p'-DDD, p, p'-DDE, o, p'-DDE, p, p'-dichlorobenzophenone (DCBP), o, p'-DCBP) were investigated. The polyclonal antibody showed relatively low and/or no cross-reactivity with these compounds, and the assay was seen to be highly selective for p, p'-DDT. Moreover, the DDTs could be ranked by their reactivity: DDT > DDD > DDE > DCBP. In addition, the characterization of the polyclonal antibody indicated that the antiserum possesses a high specificity for p, p'-isomers. The results indicated that the developed EIA using this antibody could be a convenient and supplemental analytical tool for monitoring DDT. FAU - Hirano, Masashi AU - Hirano M AD - Faculty of Environmental and Symbiotic Sciences, Prefectural University of Kumamoto, 3-1-100 Tsukide, Kumamoto, Japan. FAU - Kitamura, Kazuyuki AU - Kitamura K FAU - Kato, Ikuo AU - Kato I FAU - Yanaihara, Chizuko AU - Yanaihara C FAU - Iwamoto, Ken-ichi AU - Iwamoto K FAU - Sekiyama, Makiko AU - Sekiyama M FAU - Watanabe, Chiho AU - Watanabe C FAU - Nakamoto, Takashi AU - Nakamoto T FAU - Miyamoto, Nobukazu AU - Miyamoto N FAU - Onishi, Yuta AU - Onishi Y FAU - Arizono, Koji AU - Arizono K LA - eng PT - Journal Article PL - England TA - J Environ Sci Health B JT - Journal of environmental science and health. Part. B, Pesticides, food contaminants, and agricultural wastes JID - 7607167 RN - 0 (Antibodies) RN - 0 (Pesticide Residues) RN - 0 (Pesticides) RN - 0 (Soil Pollutants) RN - CIW5S16655 (DDT) SB - IM MH - Animals MH - Antibodies/immunology MH - Antibody Specificity MH - Carps/metabolism MH - Cross Reactions MH - DDT/*analysis MH - Environmental Monitoring/*methods MH - Environmental Pollution/*analysis MH - *Immunoenzyme Techniques/methods/standards MH - Isomerism MH - Pesticide Residues/*analysis MH - Pesticides/*analysis MH - Rabbits MH - Reproducibility of Results MH - Sensitivity and Specificity MH - Soil Pollutants/analysis EDAT- 2007/12/29 09:00 MHDA- 2008/04/09 09:00 CRDT- 2007/12/29 09:00 PHST- 2007/12/29 09:00 [pubmed] PHST- 2008/04/09 09:00 [medline] PHST- 2007/12/29 09:00 [entrez] AID - 789007048 [pii] AID - 10.1080/03601230701734964 [doi] PST - ppublish SO - J Environ Sci Health B. 2008 Jan;43(1):44-9. doi: 10.1080/03601230701734964.