Development of water quality criteria for arsenic to protect aquatic life based on species sensitivity distribution.
Ecotoxicol Environ Saf
; 189: 109933, 2020 Feb.
Article
em En
| MEDLINE
| ID: mdl-31757511
ABSTRACT
Arsenic is a hazardous environmental pollutant widely distributed globally. Arsenic toxicity is well known and it is regulated by many countries in terms of managing water quality and protecting aquatic organisms. Unfortunately, water quality criterion (WQC) to protect aquatic organisms has not been introduced in Korea yet. Thus, it is of great importance and necessity to introduce WQC to protect aquatic organisms from arsenic, as WQC play a significant role in protecting aquatic ecosystems from pollutants. Therefore, the purpose of this study is to derive arsenic water quality criterion for aquatic life in Korea. Arsenic acute toxicity tests were performed with 10 Korean native aquatic species, which belong to 7 different taxonomic groups. Based on the results of acute toxicity test and additional toxicity data from literature, the species sensitivity distribution (SSD) method was used in ecological risk assessment. The arsenic concentration of 95% protection level for aquatic life was 0.229â¯mgâ¯L-1 in this study. An assessment factor 3 and a background concentration 0.0004â¯mgâ¯L-1 were applied to the concentration value in consideration of the uncertainty of the data and the amount of arsenic natural generation. Consequently, the WQC value derived for arsenic was found to be 0.077â¯mgâ¯L-1. These results will serve as reference values to establish water quality criterion for the protection of aquatic life in Korea.
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Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Arsênio
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Poluentes Químicos da Água
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Qualidade da Água
Tipo de estudo:
Diagnostic_studies
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Prognostic_studies
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Risk_factors_studies
Limite:
Animals
País como assunto:
Asia
Idioma:
En
Ano de publicação:
2020
Tipo de documento:
Article