Contaminantes emergentes em água tratada e seus mananciais : sazonalidade, remoção e atividade estrogênica / Emerging contaminants in source and drinking water : seasonalities, removal and estrogenic activity
AUTOR(ES)
Cassiana Carolina Montagner Raimundo
FONTE
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia
DATA DE PUBLICAÇÃO
22/09/2011
RESUMO
The purpose of this work was to evaluate an annual profile of both source of supply and drinking water quality in the city of Campinas (São Paulo State) in relation to the presence of caffeine, estrone, 17b-estradiol, estriol, progesterone, testosterone, 17a-ethynylestradiol, mestranol, levonorgestrel, diethylstilbestrol, triclosan, 4-n-octylphenol, 4-n-nonylphenol, bisphenol A, phenolphthalein and atrazine using Solid Phase Extraction (SPE) and Liquid Chromatography with Tandem Mass Spectrometry Detection (LC-MS/MS), and make sure the estrogenic potential of samples using Bioluminesce Yeast Estrogen Screening bioassay (BLYES). Results showed the presence of six of the 16 compounds investigated in least one sample of drinking water (estrone, triclosan, bisphenol A, phenolphthalein, atrazine and caffeine). Atrazine concentrations up to 687 ng L were found in drinking water samples from the Capivari River. In drinking water samples from the Atibaia River, the concentrations did not exceed 42 ng L. Phenolphthalein was determined in only one campaign in both raw and treated water from the Atibaia River at concentrations around 20 ng L. Average concentrations of bisphenol A and triclosan in drinking water samples were 7 and 17 ng L, respectively. Thirteen of the 16 investigated compounds were determined in surface waters. All samples of raw and treated water showed concentrations of caffeine that varied significantly between dry and wet seasons. The conventional water treatment plants in Campinas were able to remove between 30 and 99 % of the investigated contaminants. The estrogenic activity was evaluated using BLYES bioassay, where 40% of drinking water samples showed positive estrogenic activity (between 0.01 and 1.33 ngE2equiv L) and all samples of surface water presented estrogenic activity between 0.06 and 6.54 ngE2equiv L. These values were higher in dry winter periods.
ASSUNTO(S)
interferentes endocrinos Água tratada surface waters contaminantes emergentes mananciais emerging contaminants endocrine disruptors compounds drinking water
ACESSO AO ARTIGO
http://libdigi.unicamp.br/document/?code=000837191Documentos Relacionados
- Removal of the organic contaminants β-estradiol and saxitoxins (STX, Neo-STX and dc-STX) by nanofiltration : bench scale
- Processos de tratamento de águas residuárias para a remoção de contaminantes orgânicos emergentes
- Optical sensors and instrumentations for determination of contaminants in water
- Polen apicola brasileiro : valor nutritivo e funcional, qualidade e contaminantes inorganicos
- Ten Years-Snapshot of the Occurrence of Emerging Contaminants in Drinking, Surface and Ground Waters and Wastewaters from São Paulo State, Brazil