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Diethyl phthalate (DEP)

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The "refereed" or "peer review" status of a journal comes from the Ulrichsweb Global Serials Directory (http://ulrichsweb.serialssolutions.com/), as supplied by the publisher. The term refers to the system of critical evaluation of manuscripts/articles by professional colleagues or peers. The content of refereed publications is sanctioned, vetted, or otherwise approved by a peer-review or editorial board. The peer-review and evaluation system is utilized to protect, maintain, and raise the quality of scholarly material published in serials. Publications subject to the referee process are assumed, then, to contain higher quality content than those that are not.
Peer Reviewed Journal Article

Occurrence and Profiles of Phthalates in Foodstuffs from China and Their Implications for Human Exposure

Authors: Guo, Y; Zhang, Z; Liu, L; Li, Y; Ren, N; Kannan, K (In Press) Journal of Agricultural and Food Chemistry. HERO ID: 1311703

[Less] Phthalate esters are used in a wide variety of consumer products, and human exposure to this class of . . . [More] Phthalate esters are used in a wide variety of consumer products, and human exposure to this class of compounds is widespread. Nevertheless, studies on dietary exposure of humans to phthalates are limited. In this study, nine phthalate esters were analyzed in eight categories of foodstuffs (n = 78) collected from Harbin and Shanghai, China, in 2011. Dimethyl phthalate (DMP), diethyl phthalate (DEP), dibutyl phthalate (DBP), diisobutyl phthalate (DIBP), benzyl butyl phthalate (BzBP), and diethylhexyl phthalate (DEHP) were frequently detected in food samples. DEHP was the major compound found in most of the food samples, with concentrations that ranged from below the limit of quantification (LOQ) to 762 ng/g wet weight (wt). The concentrations of phthalates in food samples from China were comparable to concentrations reported for several other countries, but the profiles were different; DMP was found more frequently in Chinese foods than in foods from other countries. The estimated daily dietary intake of phthalates (EDI(diet)) was calculated based on the concentrations measured and the daily ingestion rates of food items. The EDI(diet) values for DMP, DEP, DIBP, DBP, BzBP, and DEHP (based on mean concentrations) were 0.092, 0.051, 0.505, 0.703, 0.022, and 1.60 μg/kg-bw/d, respectively, for Chinese adults. The EDI(diet) values calculated for phthalates were below the reference doses suggested by the United States Environmental Protection Agency (EPA). Comparison of total daily intakes, reported previously based on a biomonitoring study, with the current dietary intake estimates suggests that diet is the main source of DEHP exposure in China. Nevertheless, diet accounted for only <10% of the total exposure to DMP, DEP, DBP, and DIBP, which suggested the existence of other sources of exposure to these phthalates.

The "refereed" or "peer review" status of a journal comes from the Ulrichsweb Global Serials Directory (http://ulrichsweb.serialssolutions.com/), as supplied by the publisher. The term refers to the system of critical evaluation of manuscripts/articles by professional colleagues or peers. The content of refereed publications is sanctioned, vetted, or otherwise approved by a peer-review or editorial board. The peer-review and evaluation system is utilized to protect, maintain, and raise the quality of scholarly material published in serials. Publications subject to the referee process are assumed, then, to contain higher quality content than those that are not.
Peer Reviewed Journal Article

Performance, kinetic, and biodegradation pathway evaluation of anaerobic fixed film fixed bed reactor in removing phthalic acid esters from wastewater

Authors: Ahmadi, E; Yousefzadeh, S; Ansari, M; Ghaffari, HR; Azari, A; Miri, M; Mesdaghinia, A; Nabizadeh, R; Kakavandi, B; Ahmadi, P; Badi, MY; Gholami, M; Sharafi, K; Karimaei, M; Ghoochani, M; Brahmand, MB; Mohseni, SM; Sarkhosh, M; Rezaei, S; Asgharnia, H; Dehghanifard, E; Jafari, B; Mortezapour, A; Moghaddam, VK; Mahmoudi, MM; Taghipour, N (2017) Scientific Reports 7:41020. HERO ID: 3859178

[Less] Emerging and hazardous environmental pollutants like phthalic acid esters (PAEs) are one of the recent . . . [More] Emerging and hazardous environmental pollutants like phthalic acid esters (PAEs) are one of the recent concerns worldwide. PAEs are considered to have diverse endocrine disrupting effects on human health. Industrial wastewater has been reported as an important environment with high concentrations of PAEs. In the present study, four short-chain PAEs including diallyl phthalate (DAP), diethyl phthalate (DEP), dimethyl phthalate (DMP), and phthalic acid (PA) were selected as a substrate for anaerobic fixed film fixed bed reactor (AnFFFBR). The process performances of AnFFFBR, and also its kinetic behavior, were evaluated to find the best eco-friendly phthalate from the biodegradability point of view. According to the results and kinetic coefficients, removing and mineralizing of DMP occurred at a higher rate than other phthalates. In optimum conditions 92.5, 84.41, and 80.39% of DMP, COD, and TOC were removed. DAP was found as the most bio-refractory phthalate. The second-order (Grau) model was selected as the best model for describing phthalates removal.

The "refereed" or "peer review" status of a journal comes from the Ulrichsweb Global Serials Directory (http://ulrichsweb.serialssolutions.com/), as supplied by the publisher. The term refers to the system of critical evaluation of manuscripts/articles by professional colleagues or peers. The content of refereed publications is sanctioned, vetted, or otherwise approved by a peer-review or editorial board. The peer-review and evaluation system is utilized to protect, maintain, and raise the quality of scholarly material published in serials. Publications subject to the referee process are assumed, then, to contain higher quality content than those that are not.
Peer Reviewed Journal Article

The insect repellents: A silent environmental chemical toxicant to the health

Authors: Roy, DN; Goswami, R; Pal, A (2017) Environmental Toxicology and Pharmacology 50:91-102. [Review] HERO ID: 3859187

[Less] In recent years, a large number of insect repellents have been developed with the idea of consumer benefits. . . . [More] In recent years, a large number of insect repellents have been developed with the idea of consumer benefits. In addition to already known advantageous application of insect repellents, there is increasing concern about the potential toxicity in environment leading to health caused by random use of these compounds. An increasing number of evidence suggests that insect repellents may trigger undesirable hazardous interactions with biological systems with a potential to generate harmful effects including intermediate metabolites. Biotransformation followed by bioaccumulation (vice e versa) may be an important phenomenon for toxic response of this chemicals. In this review, we have summarized the current state of knowledge on the insect repellent toxicity, including biochemical pathway alteration under in vitro and in vivo conditions considering different classes of organisms, from lower to higher vertebrate. Furthermore, we have tried to incorporate the effects of insect repellent in light of some clinical reports. We hope this review would provide useful information on potential side effects of uncontrolled use of insect repellents.

The "refereed" or "peer review" status of a journal comes from the Ulrichsweb Global Serials Directory (http://ulrichsweb.serialssolutions.com/), as supplied by the publisher. The term refers to the system of critical evaluation of manuscripts/articles by professional colleagues or peers. The content of refereed publications is sanctioned, vetted, or otherwise approved by a peer-review or editorial board. The peer-review and evaluation system is utilized to protect, maintain, and raise the quality of scholarly material published in serials. Publications subject to the referee process are assumed, then, to contain higher quality content than those that are not.
Peer Reviewed Journal Article

Personal care product use among adults in NHANES: Associations between urinary phthalate metabolites and phenols and use of mouthwash and sunscreen

Authors: Ferguson, KK; Colacino, JA; Lewis, RC; Meeker, JD (2017) Journal of Exposure Science and Environmental Epidemiology 27:326-332. HERO ID: 3230216

[Less] Personal care product use is a well-established pathway of exposure for notable endocrine disrupting . . . [More] Personal care product use is a well-established pathway of exposure for notable endocrine disrupting compounds (EDCs), including phthalates, parabens, triclosan, benzophenone-3 (BP3), and bisphenol-A. We utilized questionnaire data from the National Health and Nutrition Examination Survey 2009-2012 cycles to examine the associations between use of sunscreen and mouthwash and urinary concentrations of phthalate metabolites and phenols in a nationally representative population of US adults (n=3529). Compared with individuals who reported "Never" using mouthwash, individuals who reported daily use had significantly elevated urinary concentrations of mono-ethyl phthalate, methyl and propyl parabens, and BP3 (28%, 30%, 39%, and 42% higher, respectively). Individuals who reported "Always" using sunscreen had significantly higher urinary concentrations of triclosan, methyl, ethyl, and propyl parabens, and BP3 (59%, 92%, 102%, 151%, and 510% higher, respectively) compared with "Never" users of sunscreen. Associations between exposure biomarkers and sunscreen use were stronger in women compared with men, and associations with mouthwash use were generally stronger in men compared with women. These results suggest that sunscreen and mouthwash may be important exposure sources for EDCs.Journal of Exposure Science and Environmental Epidemiology advance online publication, 11 May 2016; doi:10.1038/jes.2016.27.

The "refereed" or "peer review" status of a journal comes from the Ulrichsweb Global Serials Directory (http://ulrichsweb.serialssolutions.com/), as supplied by the publisher. The term refers to the system of critical evaluation of manuscripts/articles by professional colleagues or peers. The content of refereed publications is sanctioned, vetted, or otherwise approved by a peer-review or editorial board. The peer-review and evaluation system is utilized to protect, maintain, and raise the quality of scholarly material published in serials. Publications subject to the referee process are assumed, then, to contain higher quality content than those that are not.
Peer Reviewed Journal Article

Simultaneous analysis of bisphenol A based compounds and other monomers leaching from resin-based dental materials by UHPLC-MS/MS

Authors: Putzeys, E; Cokic, SM; Chong, H; Smet, M; Vanoirbeek, J; Godderis, L; Van Meerbeek, B; Van Landuyt, KL; Duca, RC (2017) Journal of Separation Science 40:1063-1075. HERO ID: 3494370

[Less] Resin-based dental materials have raised debates concerning their safety and biocompatibility, resulting . . . [More] Resin-based dental materials have raised debates concerning their safety and biocompatibility, resulting in a growing necessity of profound knowledge on the quantity of released compounds into the oral cavity. In this context, the aim of this study was to develop a comprehensive and reliable procedure based on liquid chromatography with mass spectrometry for the simultaneous analysis of various leached compounds (including bisphenol A based compounds) in samples from in vitro experiments. Different experiments were performed to determine the optimal analytical parameters, comprising mass spectrometry parameters, chromatographic separation conditions and sample preparation. Four internal standards were used: deuterated diethyl phthalate and bisphenol A (commercially available), and deuterated analogues of triethylene glycol dimethacrylate and urethane dimethacrylate (custom-made). The optimized method was validated for linearity of the calibration curves and the associated correlation coefficient, lower limit of quantification, higher limit of quantification, and intra- and inter-assay accuracy and precision. Additionally, the developed liquid chromatography with tandem mass spectrometry method was applied to the analysis of leaching compounds from four resin-based dental materials. The results indicated that this method is suitable for the analysis of different target compounds leaching from dental materials. This method might serve as a valuable basis for quick and accurate quantification of leached compounds from resin-based dental materials in biological samples. This article is protected by copyright. All rights reserved.

The "refereed" or "peer review" status of a journal comes from the Ulrichsweb Global Serials Directory (http://ulrichsweb.serialssolutions.com/), as supplied by the publisher. The term refers to the system of critical evaluation of manuscripts/articles by professional colleagues or peers. The content of refereed publications is sanctioned, vetted, or otherwise approved by a peer-review or editorial board. The peer-review and evaluation system is utilized to protect, maintain, and raise the quality of scholarly material published in serials. Publications subject to the referee process are assumed, then, to contain higher quality content than those that are not.
Peer Reviewed Journal Article

Determination of phthalate esters in airborne particulates by heterogeneous photo-Fenton catalyzed aromatic hydroxylation fluorimetry

Authors: Zeng, HH; Li, XQ; Hao, WL; Zhang, LZ; Wei, T; Zhao, XF; Liu, YY; Li, JH (2017) Journal of Hazardous Materials 324:250-257. HERO ID: 3494376

[Less] The environmental contaminants phthalic acid esters (PAEs) were determined by aromatic hydroxylation . . . [More] The environmental contaminants phthalic acid esters (PAEs) were determined by aromatic hydroxylation fluorimetry combined with heterogeneous photo-Fenton process in the presence of vermiculite supported BiFeO3 (VMT-BiFeO3). In strong alkaline solution, PAEs were hydrolyzed into phthalates with no fluorescence, which then reacted with hydroxyl free radicals produced in photo-Fenton process catalyzed by VMT-BiFeO3 to form the fluorescent hydroxyl phthalates. The fluorescence intensity was proportional to the concentration of PAEs with the maximum excitation and emission wavelength of 300nm and 417nm, respectively. A good linear relationship can be obtained in the range of 3.8×10(-7) to 4.8×10(-5)molL(-1) for DEP with correlation coefficient of 0.9997, and the sensitivity of the method was high with detection limit of 5.43×10(-8)molL(-1). The method has been successfully applied to determine total PAEs in airborne particulates with satisfactory results.

The "refereed" or "peer review" status of a journal comes from the Ulrichsweb Global Serials Directory (http://ulrichsweb.serialssolutions.com/), as supplied by the publisher. The term refers to the system of critical evaluation of manuscripts/articles by professional colleagues or peers. The content of refereed publications is sanctioned, vetted, or otherwise approved by a peer-review or editorial board. The peer-review and evaluation system is utilized to protect, maintain, and raise the quality of scholarly material published in serials. Publications subject to the referee process are assumed, then, to contain higher quality content than those that are not.
Peer Reviewed Journal Article

Land-based sources of marine pollution: Pesticides, PAHs and phthalates in coastal stream water, and heavy metals in coastal stream sediments in American Samoa

Authors: Polidoro, BA; Comeros-Raynal, MT; Cahill, T; Clement, C (2017) Marine Pollution Bulletin 116:501-507. HERO ID: 3466558

[Less] The island nations and territories of the South Pacific are facing a number of pressing environmental . . . [More] The island nations and territories of the South Pacific are facing a number of pressing environmental concerns, including solid waste management and coastal pollution. Here we provide baseline information on the presence and concentration of heavy metals and selected organic contaminants (pesticides, PAHs, phthalates) in 7 coastal streams and in surface waters adjacent to the Futiga landfill in American Samoa. All sampled stream sediments contained high concentrations of lead, and some of mercury. Several coastal stream waters showed relatively high concentrations of diethyl phthalate and of organophosphate pesticides, above chronic toxicity values for fish and other aquatic organisms. Parathion, which has been banned by the US Environmental Protection Agency since 2006, was detected in several stream sites. Increased monitoring and initiatives to limit non-point source land-based pollution will greatly improve the state of freshwater and coastal resources, as well as reduce risks to human health in American Samoa.

The "refereed" or "peer review" status of a journal comes from the Ulrichsweb Global Serials Directory (http://ulrichsweb.serialssolutions.com/), as supplied by the publisher. The term refers to the system of critical evaluation of manuscripts/articles by professional colleagues or peers. The content of refereed publications is sanctioned, vetted, or otherwise approved by a peer-review or editorial board. The peer-review and evaluation system is utilized to protect, maintain, and raise the quality of scholarly material published in serials. Publications subject to the referee process are assumed, then, to contain higher quality content than those that are not.
Peer Reviewed Journal Article

Removal of phthalate esters (PAEs) by zeolite/Fe3O4: Investigation on the magnetic adsorption separation, catalytic degradation and toxicity bioassay

Authors: Mesdaghinia, A; Azari, Ali; Nodehi, RN; Yaghmaeian, K; Bharti, AK; Agarwal, S; Gupta, VK; Sharafi, K (2017) Journal of Molecular Liquids 233:378-390. HERO ID: 3859186

[Less] Zeolite/Fe3O4 magnetic nanocomposite (MZNC), was successfully prepared using in situ co-precipitation . . . [More] Zeolite/Fe3O4 magnetic nanocomposite (MZNC), was successfully prepared using in situ co-precipitation method and applied for the adsorption and degradation of phthalate esters in the presence of H2O2. The surface morphology of MZNC was characterized by XRD, SEM, TEM, FTIR, BET and VSM techniques. The effects of Fe3O4 loading, pH, contact time, initial MZNC and PAE concentration, temperature and co-esters on the removal of PAE were examined. The maximum removal by adsorption were 95.4% and 41.14% after 30 min (equilibrium time), at pH 3 and 0.2 g/L adsorbent dosage in initial concentration of 10 and 50 mg/L, whereas the MZNC-H2O2 process led to higher removal of DEP (99.7%) in initial concentration of 50 mg/L after 9 min. Furthermore, the MZNC showed stable activity and convenient recycling. The mechanism of the DMP, MMP and MBP adsorption as the main competitors for DEP adsoiption on MZNC was investigated. The MZNC proved the significant ability of adsorption and degradation efficiency in term of DEP rather than the bare Fe3O4 in the batch experiments (99.7% vs. 51.23%). The enhanced degradation efficiency of MZNC could be due to the DEP enrichment by Fe3O4 molecules in the vicinities of active sites. Daphnia magna and Ceriodaphnia dubia were used as a test organism for assess the left over toxicity in effluents containing DEP, before and after treatment process. (C) 2017 Elsevier B.V. All rights reserved.

The "refereed" or "peer review" status of a journal comes from the Ulrichsweb Global Serials Directory (http://ulrichsweb.serialssolutions.com/), as supplied by the publisher. The term refers to the system of critical evaluation of manuscripts/articles by professional colleagues or peers. The content of refereed publications is sanctioned, vetted, or otherwise approved by a peer-review or editorial board. The peer-review and evaluation system is utilized to protect, maintain, and raise the quality of scholarly material published in serials. Publications subject to the referee process are assumed, then, to contain higher quality content than those that are not.
Peer Reviewed Journal Article

Time-resolved immunoassay based on magnetic particles for the detection of diethyl phthalate in environmental water samples

Authors: Zhu, F; Mao, C; Du, D (2017) Science of the Total Environment 601-602:723-731. HERO ID: 3859055

[Less] Diethyl phthalate (DEP) is an extensively used phthalic acid diester (PAEs) with estrogenic activity . . . [More] Diethyl phthalate (DEP) is an extensively used phthalic acid diester (PAEs) with estrogenic activity and the potential for carcinogenic and teratogenic effects. To monitor trace DEP in environmental waters, a sensitive direct competitive time-resolved fluoroimmunoassay based on magnetic particles (MPs) as solid support was established. For the assay system, the anti-DEP antibody was oriented on the surface of the MPs using goat anti-rabbit antibody as linkers, and DEP-OVA was labeled using Eu(3+). Several physicochemical factors that potentially influence the assay performance of the proposed method were investigated in detail, including concentration of MPs, dilution of DEP-OVA-Eu(3+) and incubation time. Under the optimized conditions, the method showed: (i) low limit of detection (LOD) of 5.92ng/L; (ii) satisfactory accuracy (recoveries, 91.97-134.54%) with good reproducibility (inter-CV, 4.17-9.17%; intra-CV, 7.41-14.72%). All of which indicated that the newly established method had much higher efficiency and great potential for use in environmental water analysis for DEP. In addition, the proposed immunoassay was applied for investigation of DEP in aquatic environments at Zhenjiang City. Our results showed that DEP was detected at the concentration of 2.98-65.18ng/mL in river samples and 46.95-306.19ng/mL in wastewater treatment plants (WWTPs), which showed rather high concentrations compared with reported data. Our study provides background data important for risk assessment and contamination control of DEP in the aquatic environment of this area.

The "refereed" or "peer review" status of a journal comes from the Ulrichsweb Global Serials Directory (http://ulrichsweb.serialssolutions.com/), as supplied by the publisher. The term refers to the system of critical evaluation of manuscripts/articles by professional colleagues or peers. The content of refereed publications is sanctioned, vetted, or otherwise approved by a peer-review or editorial board. The peer-review and evaluation system is utilized to protect, maintain, and raise the quality of scholarly material published in serials. Publications subject to the referee process are assumed, then, to contain higher quality content than those that are not.
Peer Reviewed Journal Article

Facile hetero-assembly of superparamagnetic Fe3O4/BiVO4 stacked on biochar for solar photo-degradation of methyl paraben and pesticide removal from soil

Authors: Kumar, A; Shalini; Sharma, G; Naushad, Mu; Kumar, A; Kalia, S; Guo, C; Mola, GT (2017) Journal of Photochemistry and Photobiology A: Chemistry 337:118-131. HERO ID: 3859185

[Less] Herein we report synthesis of nano-hetero assembly of superparamagnetic Fe3O4 and bismuth vanadate stacked . . . [More] Herein we report synthesis of nano-hetero assembly of superparamagnetic Fe3O4 and bismuth vanadate stacked on Pinus roxburghii derived biochar. Optical studies and band structure analysis indicate the hybridization between the two semiconductors facilitating photodegradation of pollutants in presence of natural sunlight. The nano-heterojunctions have been utilized for removal of emerging micro-pollutants as methylparaben (MeP). 97.4% of MeP degradation was achieved in presence of biochar/Fe3O4/BiVO4 in 2 h. A degradation pathway has also been proposed on basis of mass spectrometry, chemical oxygen demand analysis and effects of various scavengers. Pinus derived biochar has also been utilized to see its long term effect on soil characteristics and fertility. The biochar has also been used to remove excessive pesticide from soil for lesser bioavailability. (C) 2017 Elsevier B.V. All rights reserved.