Effects of lethal and sublethal concentrations of peracetic acid and active chlorine of calcium hypochlorite on Chironomus xanthus
| Autor: | Aline Silvestre Pereira Dornelas, Joel Santiago de Jesus Ferreira, Renato de Almeida Sarmento, Grasiele Soares Cavallini, Luana Priscilla Rodrigues Macêdo, Mayane Marques Vieira |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Environmental Engineering
Halogenation Health Toxicology and Mutagenesis 0208 environmental biotechnology chemistry.chemical_element Fresh Water 02 engineering and technology 010501 environmental sciences Ecotoxicology 01 natural sciences Chironomidae Chironomus xanthus chemistry.chemical_compound Chlorides Peracetic acid Chlorine Animals Environmental Chemistry Bioassay Peracetic Acid Effluent Chronic toxicity Ecosystem 0105 earth and related environmental sciences Calcium hypochlorite Chemistry fungi Public Health Environmental and Occupational Health General Medicine General Chemistry Calcium Compounds biochemical phenomena metabolism and nutrition Pollution 020801 environmental engineering Environmental chemistry Toxicity Disinfectants |
| Zdroj: | Chemosphere. 256:127171 |
| ISSN: | 0045-6535 |
| DOI: | 10.1016/j.chemosphere.2020.127171 |
| Popis: | Freshwater ecosystems are vulnerable to residual concentrations of chemical agents from anthropogenic activities, and the real impacts of such compounds can only be evaluated accurately using ecotoxicological tests. The assessment of ecotoxicological effects of peracetic acid (PAA) and the active chlorine of calcium hypochlorite (Ca(ClO)2) on the insect Chironomus xanthus Meigen (Diptera: Chironomidae) is highly relevant as there are few reports on its effects in fresh water ecosystems. To our best knowledge, this is the first study to assess the chronic toxicity of the compounds to C. xanthus. The toxicity bioassays for C. xanthus included the acute effect (CL50) and the chronic effects based on body length, head width, and cumulative emergence. The results obtained in the acute effect tests indicated that the active chlorine of Ca(ClO)2 is 14 fold more toxic than PAA to C. xanthus. In sublethal evaluations, the active chlorine of Ca(ClO)2 presented higher toxicity than PAA in terms of percentage emergence, body development, and head width. In general, the results showed lower PAA toxicity relative to the active chlorine of Ca(ClO)2, demonstrating that PAA is a promising substitute for chlorinated disinfectants. In addition, the study facilitates the establishment of reference values for the safe release of effluents treated with PAA into water bodies. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect