토양 공극수 내 Cu의 존재형태가 terrestrial biotic ligand model을 이용한 보리의 급성독성 예측에 미치는 영향Effect of Cu Species Distribution in Soil Pore Water on Prediction of Acute Cu Toxicity to Hordeum vulgare using Terrestrial Biotic Ligand Model
- Other Titles
- Effect of Cu Species Distribution in Soil Pore Water on Prediction of Acute Cu Toxicity to Hordeum vulgare using Terrestrial Biotic Ligand Model
- Authors
- 안진성; 정부윤; 이병준; 남경필
- Issue Date
- Oct-2017
- Publisher
- 한국지하수토양환경학회
- Keywords
- Copper; CuOH+; CuCO3(aq); Terrestrial biotic ligand model; Acceptable Cu concentration
- Citation
- 지하수토양환경, v.22, no.5, pp 30 - 39
- Pages
- 10
- Indexed
- KCI
- Journal Title
- 지하수토양환경
- Volume
- 22
- Number
- 5
- Start Page
- 30
- End Page
- 39
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/114513
- DOI
- 10.7857/JSGE.2017.22.5.030
- ISSN
- 1598-6438
2287-8831
- Abstract
- In this study, the predictive toxicity of barley Hordeum vulgare was estimated using a modified terrestrial biotic ligand model (TBLM) to account for the toxic effects of CuOH+ and CuCO3(aq) generated at pH 7 or higher, and this was compared to that from the original TBLM. At pH values higher than 7, the difference in EA50{Cu2+} (half maximal effective activity of Cu2+) between the two models increased with increasing pH. As Mg concentration increased from 8.24 to 148 mg/L in the pH range of 5.5 to 8.5, the difference in EA50{Cu2+} increased, and it reached its maximum at pH 8. The difference in EC50[Cu]T (half maximal effective concentration of Cu) between the two models increased as dissolved organic carbon (DOC) concentration increased when pH was above 7. Thus, for soils with alkaline pH, the toxic effect of CuOH+ and CuCO3(aq) are greater at higher salt and DOC concentrations. The acceptable Cu concentration in soil porewater can be estimated by the modified TBLM through deterministic method at pH levels higher than 7, while combination of TBLM and species sensitivity distribution through the probabilistic method could be utilized at pH levels lower than 7.
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