Spatial and seasonal variability of physic-chemical parameters in Turvo, Preto and Grande rivers on São Paulo state, Brazil

Química Nova

Ferrarese, Renata Flavia Milani Silva¹  Pereira-Filho, Edenir R.¹  Campanha, Mariele B.¹  Bisinoti, Márcia Cristina¹  Melo, Camila A.¹  Universidade Federal de São Carlos, São Carlos, Brasil¹  Universidade Estadual Paulista Júlio de Mesquita Filho, São José do Rio Preto, Brasil¹  Garbin, Elaine V.¹  Moreira, Altair B.¹  Tadini, Amanda M.¹ 

关键词: water quality;    Turvo/Grande watershed;    PCA and HCA.;   

DOI  :  10.1590/S0100-40422010000900002

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

This work aims to study spatial and seasonal variability of some chemical-physical parameters in the Turvo/Grande watershed, São Paulo State, Brazil. Water samples were taken monthly, 2007/07-2008/11, from fourteen sampling stations sited along the Turvo, Preto and Grande Rivers and its main tributaries. The Principal Component Analysis and hierarchical cluster analysis showed two distinct groups in this watershed, the first one associated for the places more impacted by domestic effluent (lower levels of dissolved oxygen in the studied region). The sampling places located to downstream (Turvo and Grande rivers) were discriminate by diffuse source of pollutants from flooding and agriculture runoffs in a second group.

【 授权许可】

Unknown