The study of diagnostic techniques for the sources of Escherichia coli at Ta-An Beach

摘要

Ta-an Beach in Taichung County, central Taiwan, was found to have exceeded 1,000 CFU/100mln51% of the total monitoring records. It is difficult to identify the contamination source usingntraditional Escherichia coli and Enterococci analysis. Therefore, a more advanced method knownnas molecular biotechnology is adopted in this study to diagnose the sources of E. coli at Ta-AnnBeach. After comparing several different groups of micro-organisms in water samples, we knownthat there are E. coli and Bacillus. This shows that the beach water quality is indeed affected byncontamination from land drainage, and the numbers of E. coli and non-E. coli coliform in landndrainage is far greater than that normally found at the beach. The analytical methodsnand techniques used in this study were not significantly different from the results detectednusing standard data analysis. The proposed method has high stability and reliability, providingnways to track and identify future of contamination.