A new water quality index for protection of aquatic life appllied to the Atibaia River, region of Campinas/Paulínia cities - São Paulo State

Química Nova

Silva, Gilberto Silvério da¹  Jardim, Wilson de F.¹  Universidade Tecnológica Federal do Paraná, Medianeira, Brasil¹  Universidade Estadual de Campinas, Campinas, Brasil¹ 

关键词: water quality index;    Atibaia River;    ammonia and dissolved oxygen.;   

DOI  :  10.1590/S0100-40422006000400012

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

In this paper a water quality index is developed to subsidize management actions in the Atibaia River for upon protection of aquatic organisms. This index is composed of two measurable environmental parameters normaly, ammonia and dissolved oxygen, the latter representing the contribution of organic matter. Concentrations of these two variables were normalized on a scale from 0 to 100 and translated into statements of quality (excellent, good, regular, bad and very bad). The index was applied to three monitoring points in the Atibaia River and compared to other indices used by the State of São Paulo Environmental Agency (CETESB). The results showed that the degradation in this watershed follows the urban population density. The developed index is more restricted than the other ones routinely used to infer water quality.

【 授权许可】

Unknown