View : 583 Download: 0
Quantification of inhibitory impact of heavy metals on the growth of Escherichia coli
- Title
- Quantification of inhibitory impact of heavy metals on the growth of Escherichia coli
- Authors
- Cho K.-S.; So Y.K.; Ji Y.K.; Hee W.R.
- Ewha Authors
- 조경숙
- SCOPUS Author ID
- 조경숙
- Issue Date
- 2004
- Journal Title
- Korean Journal of Microbiology and Biotechnology
- ISSN
- 1598-642X
- Citation
- Korean Journal of Microbiology and Biotechnology vol. 32, no. 4, pp. 341 - 346
- Indexed
- SCOPUS; KCI
- Document Type
- Article
- Abstract
- The quantification of the toxicological effects of the heavy metals such as Cu, Cd, Cr, Hg, and Zn on the growth of Escherichia coli was performed, and the variations of toxicities with exposure time were evaluated in adaptation procedure. The characteristics of growth inhibition on Escherichia coli by heavy metals were different with metal species, and critical concentration of each metal, which inhibited cell growth completely, were Cu of 3.5 mM, Zn of 2.5 mM, Cd of 1.5 mM, Cr of 1.2 mM, and Hg of 0.12 mM, respectively. The tolerance of E. coli against heavy metals, based on EC50 values, increased in order of Cu > Zn > Cr > Cd > Hg. The slopes obtained from the relationship between EC50 values and expose time corresponds to adaptability of test organisms to the toxicants. The adaptability of test organisms to the toxicants was much higher at higher slope values. Adaptability of E. coli on heavy metals increased in order to Zn > Cd > Cu ≫ Cr > Hg.
- Appears in Collections:
- 공과대학 > 환경공학과 > Journal papers
- Files in This Item:
There are no files associated with this item.
- Export
- RIS (EndNote)
- XLS (Excel)
- XML