Monitoring the occurrence of emerging contaminants in treated wastewater and groundwater between 2008 and 2010. The Baix Llobregat (Barcelona, Spain)

Cabeza, Y.; Candela, Lucila; Rönen, Daniel; Teijón, Gloria

doi:10.1016/j.jhazmat.2012.07.032

Cited by 204 publications

(64 citation statements)

References 23 publications

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“…In spite of this, in 2012/2013, the fungicide PCB was 3.6-fold more concentrated in the DAP fraction (≈128 ng/L) than those measured in 2010. This observation reveals that the banned pesticide was being used, as an active intermediate of other manufacturing pesticides, or as a flame retardant, as suggested by Cabeza et al (2012). However, few data had been reported regarding the presence of PCB in other aquatic systems (Estévez et al 2012;Robles-Molina et al 2014;Wang et al 2009).…”

Section: Fungicidesmentioning

confidence: 76%

Occurrence and seasonal loads of pesticides in surface water and suspended particulate matter from a wetland of worldwide interest—the Ria Formosa Lagoon, Portugal

Cruzeiro

Pardal²,

Rocha

et al. 2015

Environ Monit Assess

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Two novel methods were developed to extract and quantify 56 pesticides in surface waters, considering their content in both dissolved aqueous phase (DAP) and suspended particulate matter (SPM) fractions. These procedures were applied to coastal samples taken seasonally during 2012-2013, from three strategic sampling sites along the Ria Formosa Lagoon (south of Portugal). Briefly, 500 mL of water samples were filtrated, separating both fractions. The DAP fraction was extracted and pre-concentrated by solid-phase extraction (SPE), while the SPM was extracted using ultrasonic extraction technique (USE). Both fractions were then analyzed, and the pesticides were quantified and identified, within 35 min, by gas chromatography (GC) coupled to mass spectrometry (GC-MS and GC-MS/MS), respectively. The extraction of pesticides from the SPM fraction showed average recoveries of 102%, detection limits below 2.2 ng/L, and quantification limits ranging from 0.3 to 6.6 ng/L. Considering the real water samples, 73% of the selected pesticides were quantified in both DAP and SPM fractions (ΣDAP+SPM 2.3 μg/L) and their maximum levels were measured in autumn and winter. By category, the global loads of fungicides, herbicides, and insecticides were ≈407, ≈323, and ≈1.6 μg/L, respectively. Thirty-one percent of the quantified pesticides exceeded the European directives levels (2008/105/EC and 98/83/EC). From the total loads, the SPM fraction contribution was 32%, showing the importance of measuring pesticides in that fraction. The water physicochemical parameters revealed that the total nitrogen amounts were very high relatively to the legal required values, mainly close to the city of Faro (2.6 mg/L). In light of the above, measures are in need to meet European directives and protect both fauna and humans that use this area for leisure.

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Section: Fungicidesmentioning

confidence: 76%

Occurrence and seasonal loads of pesticides in surface water and suspended particulate matter from a wetland of worldwide interest—the Ria Formosa Lagoon, Portugal

Cruzeiro

Pardal²,

Rocha

et al. 2015

Environ Monit Assess

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“…The concentrations of UV filters in the aquifer were lower than those expected from simple mixing of the different recharge sources which suggested their removal from urban groundwater under different redox conditions. The presence of PCPs has been also reported in the groundwater bodies of UK (Stuart el al., 2011 and, Spain (Cabeza et al, 2012), Switzerland (Kahle et al, 2009), Germany (Reh et al, 2013), USA (Barnes et al, 2008), China (Peng et al 2014) and Australia (Liu et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Occurrence, fate and risk assessment of personal care products in river–groundwater interface

Serra-Roig

Jurado

Díaz-Cruz

et al. 2016

Science of The Total Environment

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This work presents the occurrence and fate of selected personal care products (PCPs) in the urban river-groundwater interface. To this end, urban river and groundwater samples were collected in Sant Adrià del Besòs (NE of Spain) and a total of 16 PCPs were analyzed including benzophenone derivatives, camphor derivatives, p-aminobenzoic acid derivatives, triazoles and parabens in three different campaigns (from May 2010 to July 2014). These compounds reach the aquifer through the recharge of Besòs River that receives large amounts of effluents from waste water treatment plants.Results shown that most of compounds were not or barely detected (maximum concentrations around 200 ng/L) in groundwater samples during the different sampling campaigns. Only two triazoles, namely benzotriazole (BZT) and methyl benzotriazol (MeBZT) were found at high concentrations in groundwater samples (maximum concentration around 2000 ng/L). The fate of PCPs in the aquifer was assessed using mixing analysis considering the seasonal variability of the Besòs River. Overall, measured groundwater concentrations were significantly much lower than those estimated by the mixing of the river water. This observation suggested that most of the PCPs are naturally removed when river water infiltrates the aquifer. However, some compounds were more persistent in the aquifer. These compounds were in descending order: the triazoles BZT and MeBZT followed by the camphor derivative 4MBC and the paraben MePB. The measured concentrations allowed us to assess the environmental risk posed by the selected UV-filters and parabens in the river and groundwater samples. Hazard Quotients (HQs) for different aquatic species were calculated in order to characterise the ecotoxicity potential of the studied compounds in the river-groundwater interface.HQ values were always below 1 indicating that at the concentrations observed in the surface or aquifer water of Besòs River these compounds pose no risk to the selected aquatic organisms.

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“…The presence of these types of compounds is reported everywhere from river water to the drinking water at relatively higher concentration and reported to pose threats to aquatic and terrestrial organisms (Jones et al 2005;Kim et al 2007a;Stolker et al 2004;Ternes et al 2002). The two largest contributors of pharmaceuticals to the aquatic environment are believed to be from hospitals and households including both human and & Charuvila T. Aravindakumar cta@mgu.ac.in 1 animal excretion and drain disposal of pharmaceuticals (Asimakopoulos et al 2013;Cabeza et al 2012;Flores et al 2013;Liu et al 2011;Miege et al 2009;Snow et al 2012Snow et al , 2013. High-volume drugs are nonsteroidal anti-inflammatory drugs, cardiovascular drugs, central nervous system drugs, anticancer drugs, respiratory drugs, endocrinology drugs and antimicrobials (Khetan and Collins 2007).…”

Section: Introductionmentioning

confidence: 99%

Degradation of pharmaceuticals by ultrasound-based advanced oxidation process

2016

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Water pollution by pharmaceutically active compounds is an emerging issue. Toxicological studies reveal that pharmaceuticals are indeed toxic for living organisms. The lack of suitable treatment technology for the complete removal of pharmaceuticals is therefore a major challenge. Advanced oxidation processes are emerging removal techniques that have many advantages versus conventional technologies. Many studies indicate that advanced oxidation processes, either in single or in combination with other degradation techniques, can enhance the degradation of pharmaceuticals in aqueous solutions. Here, we review the degradation of pharmaceuticals by sonolysis, an oxidation processes using ultrasound. In this technique, hydroxyl radicals are generated by pyrolytic cleavage of water molecules. We review the influence of operational parameters, additives and hybrid techniques on the degradation of pharmaceuticals. The maximum degradation of organic compounds was observed in the frequency range of 100-1000 kHz, which is in the high-frequency medium-power ultrasound. Even though almost all the experiments presented more than 90 % removal and good biodegradability of the target compound, good mineralization and the toxicity removal were hardly achieved. The efficiency of the degradation varies with water matrixes and varying pH. Major pathways of degradation are hydroxylation, dehalogenation, demethylation, decarboxylation, deamination, etc. More hybrid techniques have to be developed to scale up the application of ultrasound.

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Monitoring the occurrence of emerging contaminants in treated wastewater and groundwater between 2008 and 2010. The Baix Llobregat (Barcelona, Spain)

Cited by 204 publications

References 23 publications

Occurrence and seasonal loads of pesticides in surface water and suspended particulate matter from a wetland of worldwide interest—the Ria Formosa Lagoon, Portugal

Occurrence and seasonal loads of pesticides in surface water and suspended particulate matter from a wetland of worldwide interest—the Ria Formosa Lagoon, Portugal

Occurrence, fate and risk assessment of personal care products in river–groundwater interface

Degradation of pharmaceuticals by ultrasound-based advanced oxidation process

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