Eiki Watanabe

Summary

Affiliation: National Institute of Agrobiological Sciences
Country: Japan

Publications

  1. doi request reprint Potential application of immunoassays for simple, rapid and quantitative detections of phytoavailable neonicotinoid insecticides in cropland soils
    Eiki Watanabe
    National Institute for Agro Environmental Sciences, Tsukuba, Ibaraki 305 8604, Japan Electronic address
    Ecotoxicol Environ Saf 132:288-94. 2016
  2. doi request reprint Highly sensitive quantification of pyrethroid insecticide etofenprox in vegetables with high-performance liquid chromatography and fluorescence detection
    Eiki Watanabe
    National Institute for Agro Environmental Sciences, Tsukuba, Ibaraki 305 8604, Japan Electronic address
    J Chromatogr A 1385:35-41. 2015
  3. doi request reprint Aqueous acetonitrile extraction for pesticide residue analysis in agricultural products with HPLC-DAD
    Eiki Watanabe
    National Institute for Agro Environmental Sciences, Tsukuba, Ibaraki 305 8604, Japan Electronic address
    Food Chem 154:7-12. 2014
  4. doi request reprint Reduction of hazardous organic solvent in sample preparation for hydrophilic pesticide residues in agricultural products with conventional liquid chromatography
    Eiki Watanabe
    National Institute for Agro Environmental Sciences, Tsukuba, Ibaraki 305 8604, Japan
    J Agric Food Chem 61:4792-8. 2013
  5. doi request reprint Rapid and simple immunochemical screening combined with hand-shaking extraction for thiamethoxam residue in agricultural products
    Eiki Watanabe
    National Institute for Agro Environmental Sciences, Tsukuba, Ibaraki, 305 8604, Japan
    J Sci Food Agric 93:1839-44. 2013
  6. doi request reprint Quantitative analysis of fungicide azoxystrobin in agricultural samples with rapid, simple and reliable monoclonal immunoassay
    Eiki Watanabe
    Organochemicals Division, National Institute for Agro Environmental Sciences, Tsukuba, Ibaraki 305 8604, Japan
    Food Chem 136:695-702. 2013
  7. doi request reprint Rapid and simple analysis of pesticides persisting on green pepper surfaces swabbing with solvent-moistened cotton
    Eiki Watanabe
    National Institute for Agro Environmental Sciences, Tsukuba, Ibaraki 305 8604, Japan
    J Agric Food Chem 60:9000-5. 2012
  8. doi request reprint Validation of a commercial ELISA for the analysis of the insecticide dinotefuran in a variety of analytically challenging vegetables
    E Watanabe
    Organochemicals Division, National Institute for Agro Environmental Sciences, Tsukuba, Ibaraki 305 8604, Japan
    Food Addit Contam Part A Chem Anal Control Expo Risk Assess 29:1067-73. 2012
  9. doi request reprint Analytical evaluation of enzyme-linked immunosorbent assay for neonicotinoid dinotefuran for potential application to quick and simple screening method in rice samples
    Eiki Watanabe
    National Institute for Agro Environmental Sciences, Tsukuba, Ibaraki 305 8604, Japan
    Talanta 84:1107-11. 2011
  10. doi request reprint Immunoassay based on a polyclonal antibody for sex steroid hormones produced by a heterogeneous hapten-conjugated immunogen: estimation of its potentiality and antibody characteristics
    Eiki Watanabe
    National Institute for Agro Environmental Sciences, Tsukuba, Ibaraki 305 8604, Japan
    Anal Chim Acta 658:56-62. 2010

Collaborators

Detail Information

Publications23

  1. doi request reprint Potential application of immunoassays for simple, rapid and quantitative detections of phytoavailable neonicotinoid insecticides in cropland soils
    Eiki Watanabe
    National Institute for Agro Environmental Sciences, Tsukuba, Ibaraki 305 8604, Japan Electronic address
    Ecotoxicol Environ Saf 132:288-94. 2016
    ..Results indicate that the evaluated kit-based ELISA has applicability for simple, quick, and reliable detection of phytoavailable insecticides in soils and for estimating Kd values in soil. ..
  2. doi request reprint Highly sensitive quantification of pyrethroid insecticide etofenprox in vegetables with high-performance liquid chromatography and fluorescence detection
    Eiki Watanabe
    National Institute for Agro Environmental Sciences, Tsukuba, Ibaraki 305 8604, Japan Electronic address
    J Chromatogr A 1385:35-41. 2015
    ..The proposed method using the HPLC-FLD was applied for trace analysis of the insecticide residue in vegetable samples...
  3. doi request reprint Aqueous acetonitrile extraction for pesticide residue analysis in agricultural products with HPLC-DAD
    Eiki Watanabe
    National Institute for Agro Environmental Sciences, Tsukuba, Ibaraki 305 8604, Japan Electronic address
    Food Chem 154:7-12. 2014
    ..These results demonstrate the feasibility of the proposed method for pesticides with diverse properties. ..
  4. doi request reprint Reduction of hazardous organic solvent in sample preparation for hydrophilic pesticide residues in agricultural products with conventional liquid chromatography
    Eiki Watanabe
    National Institute for Agro Environmental Sciences, Tsukuba, Ibaraki 305 8604, Japan
    J Agric Food Chem 61:4792-8. 2013
    ..The results demonstrate the feasibility of the proposed sample preparation procedures for hydrophilic pesticides...
  5. doi request reprint Rapid and simple immunochemical screening combined with hand-shaking extraction for thiamethoxam residue in agricultural products
    Eiki Watanabe
    National Institute for Agro Environmental Sciences, Tsukuba, Ibaraki, 305 8604, Japan
    J Sci Food Agric 93:1839-44. 2013
    ..Finally, the validity of the ELISA combined with the proposed extraction method was verified against a reference high-performance liquid chromatography (HPLC) method using real-world agricultural samples...
  6. doi request reprint Quantitative analysis of fungicide azoxystrobin in agricultural samples with rapid, simple and reliable monoclonal immunoassay
    Eiki Watanabe
    Organochemicals Division, National Institute for Agro Environmental Sciences, Tsukuba, Ibaraki 305 8604, Japan
    Food Chem 136:695-702. 2013
    ..These results clearly indicate that the kit-based dc-ELISA is suitable for the rapid, simple, quantitative and reliable determination of the fungicide...
  7. doi request reprint Rapid and simple analysis of pesticides persisting on green pepper surfaces swabbing with solvent-moistened cotton
    Eiki Watanabe
    National Institute for Agro Environmental Sciences, Tsukuba, Ibaraki 305 8604, Japan
    J Agric Food Chem 60:9000-5. 2012
    ..These findings indicate strongly that the proposed NDE method has collateral conditions, but it appears promising for on-site pretreatment for pesticide residue analysis...
  8. doi request reprint Validation of a commercial ELISA for the analysis of the insecticide dinotefuran in a variety of analytically challenging vegetables
    E Watanabe
    Organochemicals Division, National Institute for Agro Environmental Sciences, Tsukuba, Ibaraki 305 8604, Japan
    Food Addit Contam Part A Chem Anal Control Expo Risk Assess 29:1067-73. 2012
    ..99). Results show that the ELISA evaluated in this study is suitable for the rapid and simple screening method of dinotefuran residue in agricultural samples even without sample pre-treatment...
  9. doi request reprint Analytical evaluation of enzyme-linked immunosorbent assay for neonicotinoid dinotefuran for potential application to quick and simple screening method in rice samples
    Eiki Watanabe
    National Institute for Agro Environmental Sciences, Tsukuba, Ibaraki 305 8604, Japan
    Talanta 84:1107-11. 2011
    ..98). These findings strongly indicate that the evaluated and validated ELISA has a potential utility in a quick, simple, and reliable residue analysis, especially a screening method before shipment contributing to food safety...
  10. doi request reprint Immunoassay based on a polyclonal antibody for sex steroid hormones produced by a heterogeneous hapten-conjugated immunogen: estimation of its potentiality and antibody characteristics
    Eiki Watanabe
    National Institute for Agro Environmental Sciences, Tsukuba, Ibaraki 305 8604, Japan
    Anal Chim Acta 658:56-62. 2010
    ..From these findings, it was suggested that the verified method was an efficient and rational approach in development of polyclonal antibody to low molecular compounds...
  11. ncbi request reprint Evaluation of performance of a commercial monoclonal antibody-based fenitrothion immunoassay and application to residual analysis in fruit samples
    Eiki Watanabe
    Environmental Chemical Analysis Laboratory, Chemical Analysis Research Center, National Institute for Agro Environmental Sciences, Kannondai 3 1 3, Tsukuba, Ibaraki 305 8604, Japan
    J Food Prot 69:191-8. 2006
    ..95). These findings strongly suggest that the ELISA kit may be routinely employed for on-site fenitrothion screening of fruit samples...
  12. ncbi request reprint Reliable enzyme immunoassay detection for chlorothalonil: fundamental evaluation for residue analysis and validation with gas chromatography
    Eiki Watanabe
    National Institute for Agro Environmental Sciences, 3 1 3 Kannondai, Tsukuba City, Ibaraki, Japan
    J Chromatogr A 1129:273-82. 2006
    ..Nevertheless, the results demonstrated that the proposed ELISA is a reliable, cost-effective, and rapid quantitative method for chlorothalonil residue...
  13. ncbi request reprint Synthesis of haptens for development of antibodies to alkylphenols and evaluation and optimization of a selected antibody for ELISA development
    Eiki Watanabe
    Chemical Analysis Research Center, National Institute for Agro Environmental Sciences NIAES, Tsukuba, Ibaraki, Japan
    J Agric Food Chem 53:7395-403. 2005
    ..7 +/- 1.3 microg/L. The optimized ELISA displayed no significant cross-reaction against the parent compounds, nonylphenol ethoxylates, degradation products, carboxylates, and bisphenol A, except in 4-octylphenol...
  14. ncbi request reprint Evaluation of a commercial immunoassay for the detection of chlorfenapyr in agricultural samples by comparison with gas chromatography and mass spectrometric detection
    Eiki Watanabe
    Environmental Chemical Analysis Laboratory, Chemical Analysis Research Center, National Institute for Agro Environmental Sciences, Kannondai 3 1 3, Tsukuba, Ibaraki 305 8604, Japan
    J Chromatogr A 1074:145-53. 2005
    ..98). These considerations make the ELISA kit very useful analytical tool for monitoring and regulatory programs, without the need of complex and expensive instrumentation...
  15. ncbi request reprint Immunoassay for acetamiprid detection: application to residue analysis and comparison with liquid chromatography
    Eiki Watanabe
    National Institute for Agro Environmental Sciences, 3 1 3 Kannondai, Tsukuba 305 8604, Japan
    Anal Bioanal Chem 386:1441-8. 2006
    ..99). The ELISA applied to the residue analysis of acetamiprid in agricultural products is a rapid, simple, and cost-effective method, and could be successfully applied to the detection of acetamiprid before the distribution of produce...
  16. ncbi request reprint Evaluation and validation of a commercially available enzyme-linked immunosorbent assay for the neonicotinoid insecticide imidacloprid in agricultural samples
    Eiki Watanabe
    Environmental Chemical Analysis Laboratory, Chemical Analysis Research Center, and Department of Research Planning and Coordination, National Institute for Agro Environmental Sciences, Tsukuba, Ibaraki 305 8604, Japan
    J Agric Food Chem 52:2756-62. 2004
    ..998). These findings strongly indicate that the ELISA kit may be employed routinely for an on-site imidacloprid residue analysis of apple samples...
  17. ncbi request reprint Simultaneous determination of neonicotinoid insecticides in agricultural samples by solid-phase extraction cleanup and liquid chromatography equipped with diode-array detection
    Eiki Watanabe
    National Institute for Agro Environmental Sciences, Kannondai 3 1 3, Tsukuba, Ibaraki 305 8604, Japan
    J Agric Food Chem 55:3798-804. 2007
    ..The limit of detection of the method ranged from 0.01 to 0.03 mg/kg for the insecticides...
  18. doi request reprint Review of enzyme-linked immunosorbent assays (ELISAs) for analyses of neonicotinoid insecticides in agro-environments
    Eiki Watanabe
    National Institute for Agro Environmental Sciences, Tsukuba, Ibaraki 305 8604, Japan
    J Agric Food Chem 61:12459-72. 2013
    ..The reviewed ELISAs can be ranked as quantitative, rapid and simple analytical methods for single analytes. The recognition of ELISA as an analytical methodology for pesticide residues is expected to advance rapidly in the future. ..
  19. doi request reprint Arsenic speciation in rice and soil containing related compounds of chemical warfare agents
    Koji Baba
    National Institute for Agro Environmental Sciences, Tsukuba, Ibaraki 305 8604, Japan
    Anal Chem 80:5768-75. 2008
    ..17 +/- 0.04 microg of As kg(-1): 86.7 +/- 2.7%). The root uptake of each species from the soil and transport from straw to grains were significantly related to the calculated log K(ow) values...
  20. doi request reprint Chromatographic separation of arsenic species with pentafluorophenyl column and application to rice
    Koji Baba
    National Institute for Agro Environmental Sciences, Tsukuba 305 8604, Ibaraki, Japan Electronic address
    J Chromatogr A 1354:109-16. 2014
    ..15M nitric acid. The methodology was validated by use of certified reference materials, NMIJ CRM 7503-a and NIST SRM 1568a, and extremely low arsenic rice samples as blank samples. ..
  21. ncbi request reprint Organochlorine pesticides in the sediment core of Gwangyang bay, South Korea
    Yun Seok Kim
    National Institute for Agro Environmental Sciences, 3 1 3 Kannondai, Tsukuba, Ibaraki, 305 8604, Japan
    Arch Environ Contam Toxicol 54:386-94. 2008
    ..The OCPs in the sediments of Gwangyang Bay were compared with those of other countries by hierarchical cluster analysis and principal component analysis...
  22. ncbi request reprint Immunoassay for iprodione: key estimation for residue analysis and method validation with chromatographic technique
    Eiki Watanabe
    National Institute for Agro Environmental Sciences, 3 1 3 Kannondai, Tsukuba City, Ibaraki 305 8604, Japan
    Anal Chim Acta 583:370-6. 2007
    ..993). These findings strongly indicate that the proposed ELISA was an adequate and reliable detection method for iprodione residues...
  23. doi request reprint Development of an Immunosensor for Determination of the Fungicide Chlorothalonil in Vegetables, Using Surface Plasmon Resonance
    Yuki Hirakawa
    National Institute for Agro Environmental Sciences, Tsukuba, Ibaraki 305 8604, Japan
    J Agric Food Chem 63:6325-30. 2015
    ..The sensor showed good performance for chlorothalonil residue analysis in vegetables with rapid determination, although the sensitivity and the cross-reactivity were less effective than with the ic-ELISA. ..