CORRELATION BETWEEN DEFICITS IN ACCESS TO DRINKING WATER AND SANITARY SEWAGE, AND HOSPITALIZATIONS FOR DISEASES RELATED TO INADEQUATE SANITATION IN BRAZIL: A REGIONAL, GENDER, AND RACE ANALYSIS (2018–2023).
Keywords:
Chlorides, Lactuca sativa, Toxicity.Abstract
In this study, an assessment of the toxicity of effluent from a dairy industry was carried out using bioassays with seeds of the species Lactuca sativa (White lettuce - Boston variety). It was determined that the concentration capable of inhibiting 50% of seed germination was 48%. The lowest dilution that presented a toxic effect was 10%, both for the root elongation index and the relative germination index. On the other hand, dilutions of 0.25% and 0.5% showed stimulating effects on root elongation. No toxic effects were observed on germination and relative germination parameters. Therefore, it is concluded that in certain dilutions, the effluent studied stimulates the growth of seeds used as a bioindicator, suggesting the possibility of studying its action as a fertilizer in dilutions below 10%. However, dilutions above 10% were determined to be phytotoxic, especially due to the presence of chlorides.
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