Photodegradation of the steroid hormones 17β-estradiol (E2) and 17α-ethinylestradiol (EE2) in dilute aqueous solution

Mazellier, Patrick; Meite, Ladji; Laat, J. De

doi:10.1016/j.chemosphere.2008.07.046

Cited by 110 publications

(72 citation statements)

References 31 publications

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“…Cependant, les résultats qui ont été obtenus avec le diclofénac indiquent que ce composé sera assez facilement photolysé dans l'environnement sous rayonnement solaire et confirment les données bibliographiques (BUSER et al, 1998;POIGER et al, 2001). Il est donc important de connaître les structures des photoproduits formés, ainsi que leur stabilité comme nous l'avons décrit dans une publication récente (MAZELLIER et al, 2008). Par ailleurs, des réactions de photodégradation secondaires induites par la présence de matières organiques ou par des complexes métalliques peuvent participer à la dégradation des composés dans le milieu naturel (BOREEN et al, 2003).…”

Section: Resultsunclassified

“…Nous présenterons dans cette publication les résultats cinétiques obtenus dans le cadre d'une étude plus étendue consacrée à l'étude des mécanismes de photolyse des six molécules présentées dans le tableau 1 (MAZELLIER et al, 2008;MEITE, 2007 Chemical structure and properties of the compounds studied in the present work. Figure 1) ont été effectuées à l'aide d'un réacteur photochimique cylindrique à double enveloppe (volume de solution : 4,00 L, épaisseur annulaire : 6,25 cm).…”

Section: Introductionunclassified

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Cinétique de phototransformation de polluants organiques émergents en solution aqueuse diluée

Meite

Szabó

Mazellier

et al. 2010

rseau

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Les vitesses de phototransformation de quatre hormones (estradiol, éthinylestradiol, progestérone, testostérone) et de deux anti-inflammatoires non stéroïdiens (diclofénac et naproxen) ont été étudiées en milieu aqueux dilué. Les expériences de photolyse ont été réalisées sous irradiation monochromatique (254 nm) et sous irradiation polychromatique (λ > 280 nm). Les résultats expérimentaux ont montré que les rendements quantiques de photodécomposition sont faibles (entre 0,02 et 0,08) à l’exception du diclofénac (de l’ordre de 0,30). L’influence de la concentration en oxygène dissous sur les rendements quantiques de photolyse a aussi été examinée. À partir des résultats obtenus, les rendements d’élimination des composés étudiés dans les conditions de désinfection des eaux par irradiation UV à 254 nm ont été estimés.The photodecomposition of some emerging organic pollutants (4 hormones: estradiol, ethynylestradiol, progesterone, testosterone; and 2 nonsteroidal anti-inflammatory drugs: diclofenac and naproxen) has been investigated in dilute aqueous solution. The photolysis experiments were carried out under monochromatic irradiation (254 nm) and under polychromatic irradiation (λ > 280 nm). The calculated quantum yields of photodecomposition under monochromatic irradiations were low (between 0.02 and 0.08) except for diclofenac for which the value was about 0.30. The influence of oxygen concentration was also examined and the removal yields of these compounds under the conditions used for the UV-disinfection of drinking water at 254 nm were estimated

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Section: Resultsunclassified

Section: Introductionunclassified

Cinétique de phototransformation de polluants organiques émergents en solution aqueuse diluée

Meite

Szabó

Mazellier

et al. 2010

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“…In the soil environment, sorption is believed to be an important process governing the mobility of organic compounds including PPCPs (Drillia et al 2005;Boxall 2008), whereas volatilization and degradation are processes governing the elimination of these compounds. Photodegradation may be a pathway for the removal of target PPCPs on surface soil exposed to sunlight since these compounds can be degraded by wavelengths in the environmental UV spectrum (Phillips et al 1990;Lin and Reinhard 2005;Aranami and Readman 2007;Belden et al 2007;Mazellier et al 2008;Nakada et al 2008;Matamoros et al 2009). …”

Section: Compoundmentioning

confidence: 99%

Occurrence of PPCPs at a Wastewater Treatment Plant and in Soil and Groundwater at a Land Application Site

Karnjanapiboonwong

Suski

Shah

et al. 2010

Water Air Soil Pollut

124

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Pharmaceuticals and personal care products (PPCPs) can reach soil and aquatic environments through land application of wastewater effluent and agricultural runoff. The objective of this research was to assess the fate of PPCPs at field scale. PPCPs were measured systematically in a wastewater treatment plant (WWTP), and in soil and groundwater receiving treated effluent from the WWTP. A land application site in West Texas was used as the study site; it has received treated wastewater effluent from the WWTP for more than 70 years in order to remove additional nutrients and irrigate non-edible crops. Target compounds (estrone, 17β-estradiol, estriol, 17α-ethynylestradiol, triclosan, caffeine, ibuprofen, and ciprofloxacin) in wastewater, sewage sludge, soil, and groundwater were determined using HPLC/UV with qualitative confirmatory analyses using GC/MS. Samples were collected quarterly over 12 months for wastewater and sludge samples and over 9 months for soil and groundwater samples. Results indicated that concentrations of PPCPs in wastewater influent, effluent, sludge solid phase, and sludge liquid phase were in the range of non-detected (ND)-183 μg/L, ND-83 μg/L, ND-19 μg/g, and ND-50 μg/L, respectively. Concentrations in soil and groundwater samples were in the range of ND-319 ng/g and ND-1,745 μg/L, respectively. GC/MS confirmation data were consistent with the results of HPLC/UV analyses. Overall, data indicate that PPCPs in the wastewater effluent from the WWTP transport both vertically and horizontally in the soil, and eventually reach groundwater following land application of the effluent.

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“…Thus, the coexistence of triclosan and chlorophenols in non treated wastewater contributes to the introduction of 2,4 DCP (dichlorophenol) and 2,4,6, TCP (trichlorophenol) in the environment [59]. The investigation of the photochemical transformation of the natural estrogenic steroids E2 and EE2 have shown that this process is slow, occurring with a quantum yield of 0.06 both by monochromatic (254 nm) and polychromatic (A290 nm) irradiation; values similar to that determined for phenols [60]. Other pharmaceuticals relatively stable against sunlight included atenolol, acetaminophen, carbamazepine, ibuprofen, mefenamic acid [61].…”

Section: Fate and Effects On The Environment Of Edcs/ppcpsmentioning

confidence: 77%

Pharmaceuticals, Personal Care Products and Endocrine Disrupting Agents in the Environment – A Review

Caliman

Gavrilescu²

2009

CLEAN Soil Air Water

358

163

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In the last few years, concerns about the environmental fate and behavior of synthetic organic chemicals for hygienic use detected in waters have increased. Several of these compounds are used intensively, in large volumes, are persistent, bioactive and exhibit bioaccumulation and endocrine disrupting activity. Some pharmaceuticals, including analgesics, antibiotics, antiepilieptics, β‐blockers, blood‐lipid regulators and contraceptives also have the potential to determine various physiologic responses in aquatic organisms. Other compounds (natural hormones and several industrial and household chemicals) able to affect organisms in receiving waters are also endocrine disrupting agents. A lack of information still exists regarding the potential impact associated with the occurrence, fate and ecotoxicological effects of endocrine disruptors, including pharmaceuticals and personal care compounds in the environment since few compounds were inventoried or regulated worldwide. In some cases, there are no legal requirements to assess the impact of long‐term exposure to low concentration of these chemicals. This may be because important classes of these compounds have not been studied in detail up to now due to the non‐availability of suitable instrumental techniques or analytical standards for low concentration levels. Recently, the appearance of sophisticated tests for monitoring environmental contamination has revealed the presence of these types of contaminants at lower levels, down to nanograms per liter. This constitutes an important tool in the development of guidelines to monitor and/or update environmental compliance reports. The current survey aims to combine information from the literature on the environmental occurrence, fate and effects of personal care products and endocrine disrupting agents on the environment; as well as on the treatment options for their removal from wastewaters.

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Photodegradation of the steroid hormones 17β-estradiol (E2) and 17α-ethinylestradiol (EE2) in dilute aqueous solution

Cited by 110 publications

References 31 publications

Cinétique de phototransformation de polluants organiques émergents en solution aqueuse diluée

Cinétique de phototransformation de polluants organiques émergents en solution aqueuse diluée

Occurrence of PPCPs at a Wastewater Treatment Plant and in Soil and Groundwater at a Land Application Site

Pharmaceuticals, Personal Care Products and Endocrine Disrupting Agents in the Environment – A Review

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