IMS Method Performance Analyses for Giardia in Water Under Differing Conditions |
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| Authors: | Bing-Mu Hsu Chihpin Huang |
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| Affiliation: | (1) Department of Earth and Environmental Sciences, National Chung Cheng University, 168, University Road, Min-Hsiung, Chiayi, Taiwan, Republic of China;(2) Institute of Environmental Engineering, National Chiao Tung University, 75, Po-Ai Street, Hsinchu, Taiwan, Republic of China |
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| Abstract: | Immunomagnetic separation (IMS) has been specified as a standard method for the measurement of Giardia under USEPA Method 1623. In this study, IMS was evaluated on the basis of recovery efficiencies for Giardia cysts under various IMS operation conditions. Significant change in recovery was observed by altering the debris ratio of water samples. Notably, cyst recovery efficiencies utilizing IMS dropped with increased turbidity, and results for varying dosages of magnetic beads and cysts indicate that 1 / 100 immunomagnetic beads is sufficient to conjugate large numbers of cysts. Changing vessel volume and replacing the sample buffer had no significant effect on cyst recovery efficiencies. |
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| Keywords: | Giardia Immunomagnetic separation (IMS) Method 1623 |
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