Abstract
A microformat imaging technique in combination with registration of chemiluminescence by a charge-coupled device, CCD camera, were applied for the detection of the herbicide atrazine by two immunoenzyme assay formats - microplate and membrane assays. For the microplate (ELISA) case the detection limit was 95 pg mL(-1), giving a 9.5-fold enhancement in comparison with a traditional colorimetric assay. The membrane dot blot assay allowed detection of up to 40 pg mL(-1) of atrazine (4.5-fold enhancement). Due to the application of polyelectrolyte carriers for rapid reactants separation the membrane assay may be realized in 15 min. CCD-based registration of signals assures a high reproducibility of measurements; the variation coefficient is in the range 1-7%. The effectiveness of the assays developed for controlling triazine herbicides in mineral and tap water has been demonstrated.
Original language | English |
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Pages (from-to) | 905-915 |
Journal | International Journal of Environmental Analytical Chemistry |
Volume | 85 |
Issue number | 12-13 |
DOIs | |
Publication status | Published - 2005 |
Subject classification (UKÄ)
- Biochemistry and Molecular Biology