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Dibutyl Phthalate (DBP)

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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

Cloning of a dibutyl phthalate hydrolase gene from Acinetobacter sp. strain M673 and functional analysis of its expression product in Escherichia coli

Authors: Wu, J; Liao, X; Yu, F; Wei, Z; Yang, L (In Press) Applied Microbiology and Biotechnology. HERO ID: 1332542

[Less] A dibutyl phthalate (DBP) transforming bacterium, strain M673, was isolated and identified as Acinetobacter . . . [More] A dibutyl phthalate (DBP) transforming bacterium, strain M673, was isolated and identified as Acinetobacter sp. This strain could not grow on dialkyl phthalates, including dimethyl, diethyl, dipropyl, dibutyl, dipentyl, dihexyl, di(2-ethylhexyl), di-n-octyl, and dinonyl phthalate, but suspensions of cells could transform these compounds to phthalate via corresponding monoalkyl phthalates. During growth in Luria-Bertani medium, M673 produced the high amounts of non-DBP-induced intracellular hydrolase in the stationary phase. One DBP hydrolase gene containing an open reading frame of 1,095 bp was screened from a genomic library, and its expression product hydrolyzed various dialkyl phthalates to the corresponding monoalkyl 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

Di-n-butyl phthalate causes antiestrogenic effects in female murray rainbowfish (Melanotaenia fluviatilis)

Authors: Bhatia, H; Kumar, A; Du, J; Chapman, J; Mclaughlin, MJ (In Press) Environmental Toxicology and Chemistry. HERO ID: 1639196

[Less] Di-n-butyl phthalate (DnBP) is an industrial pollutant with antiandrogenic effects reported in male . . . [More] Di-n-butyl phthalate (DnBP) is an industrial pollutant with antiandrogenic effects reported in male mammals and fish. Little research has been done on the endocrine effects of DnBP in female fish. The present study investigated the changes in ovarian histology and serum vitellogenin concentrations in adult Murray rainbowfish (Melanotaenia fluviatilis) after exposure to 125, 250, 500 and 1000 µg/L DnBP for 7 d. Treatment to 125 to 1000 µg/L DnBP for 7 d did not have any significant effect on the survival, condition factor, gonadosomatic index, hepatosomatic index and the developmental stage of the fish. Based on the histological investigation, the sizes of the previtellogenic oocytes in the 250 to 1000 µg/L treated fish were found to be significantly higher than in the corresponding control fish (p ≤ 0.05). The early vitellogenic oocytes in the 1000 µg/L treated fish were significantly smaller relative to those in the unexposed fish (p ≤ 0.05). Histological changes like chorion folding, shrunken ooplasm, impaired yolk production, granulomatous inflammation and interstitial fibrosis were observed in the ovaries of the fish treated with DnBP. The circulating levels of plasma vitellogenin were significantly lower in the fish exposed to 500 and 1000 µg/L DnBP (p ≤ 0.05). These data show that a continuous exposure to sub-acute concentrations of DnBP for 7 d can cause antiestrogenicity in female adult Murray rainbowfish. Environ Toxicol Chem © 2013 SETAC.

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

Soil contamination by phthalate esters in Chinese intensive vegetable production systems with different modes of use of plastic film

Authors: Wang, J; Luo, Y; Teng, Y; Ma, W; Christie, P; Li, Z (In Press) Environmental Pollution. HERO ID: 1639215

[Less] The concentrations of six priority phthalic acid esters (PAEs) in intensively managed suburban vegetable . . . [More] The concentrations of six priority phthalic acid esters (PAEs) in intensively managed suburban vegetable soils in Nanjing, east China, were analyzed using gas chromatography-mass spectrometry (GC-MS). The total PAE concentrations in the soils ranged widely from 0.15 to 9.68 mg kg(-1) with a median value of 1.70 mg kg(-1), and di-n-butyl phthalate (DnBP), bis-(2-ethylhexyl) phthalate (DEHP) and di-n-octyl phthalate (DnOP) were the most abundant phthalate esters. Soil PAE concentrations depended on the mode of use of plastic film in which PAEs were incorporated as plasticizing agents and both the plastic film and poultry manure appeared to be important sources of soil PAEs. Vegetables in rotation with flooded rice led to lower concentrations of PAEs in soil. The results indicate that agricultural plastic film can be an important source of soil PAE contamination and further research is required to fully elucidate the mechanisms of PAE contamination of intensive agricultural soils with different use modes of use of plastic film.

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

Spatio-temporal distributions and the ecological and health risks of phthalate esters (PAEs) in the surface water of a large, shallow Chinese lake

Authors: He, W; Qin, N; Kong, X; Liu, W; He, Q; Ouyang, H; Yang, C; Jiang, Y; Wang, Q; Yang, B; Xu, F (In Press) Science of the Total Environment. HERO ID: 1639216

[Less] The spatio-temporal distributions and the ecological and health risks of PAEs in surface water of Lake . . . [More] The spatio-temporal distributions and the ecological and health risks of PAEs in surface water of Lake Chaohu, the fifth largest lake in China, were studied based on the monthly monitoring of six PAE congeners from May 2010 to April 2011. The annual total concentration of the six PAE congeners (Σ6PAE) in the surface water ranged from 0.467 to 17.953μgL(-1), with the average value of 4.042±3.929μgL(-1). The di-n-butyl phthalate (DnBP) that dominated the Σ6PAE at 65.8% was found at its highest and lowest levels in the western lake (TX) and eastern drinking water source area (JC), respectively. The temporal distributions of Σ6PAE showed that the highest and lowest levels were observed in September 2010 and June 2010, respectively. The different relationships between the runoff and the PAEs with low and high levels of carbon might suggest their different sources. The DnBP had much greater ecological risks than the other studied PAE congeners as indicated by its potential affected fractions (PAFs) and the margin of safety (MOS10). The PAE congeners studied posed little health risk to the nearby male and female citizens.

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

A solid-phase microextraction fiber with carbon nanoparticles as sorbent material prepared by a simple flame-based preparation process

Authors: Sun, M; Feng, J; Qiu, H; Fan, L; Li, L; Luo, C (In Press) Journal of Chromatography A. HERO ID: 1639222

[Less] A novel carbon nanoparticles-coated solid-phase microextraction (SPME) fiber was prepared via a simple . . . [More] A novel carbon nanoparticles-coated solid-phase microextraction (SPME) fiber was prepared via a simple and low-cost flame-based preparation process, with stainless steel wire as support. Surface characteristic of the fiber was studied with scanning electron microscope. A nano-scaled brushy structure was observed. Coupled to gas chromatography (GC), the fiber was used to extract phthalate esters (PAEs) and polycyclic aromatic hydrocarbons (PAHs) in aqueous samples. Analytical performances of the proposed method were investigated under the optimum extraction conditions (extraction temperature, 40°C; content of KCl, 30% (w/v); extraction time, 50min for PAEs and 40min for PAHs) and compared with other reports for the same analytes. Calibration ranges were 0.06-500μgL(-1) for di-n-butyl phthalate (DBP), and 0.1-300μgL(-1) for di-cyclohexyl phthalate (DCHP) and di-(2-ethyl-hexyl) phthalate (DEHP). For the eight PAHs, good linearity was obtained ranging from 0.01 to 150μgL(-1). Limits of detection were 0.005μgL(-1) for three PAEs and 0.001-0.003μgL(-1) for eight PAHs. The fiber exhibited excellent stability. It can be used for 100 times with RSDs of extraction efficiency less than 22.4%. The as-established SPME-GC method was applied to determine PAEs in food-wrap and PAHs in cigarette ash and snow water, and satisfactory results were obtained. The carbon nanoparticles-coated SPME fiber was efficient for sampling of organic compounds from aqueous samples.

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

A review on the occurrence of micropollutants in the aquatic environment and their fate and removal during wastewater treatment

Authors: Luo, Y; Guo, W; Ngo, HH; Nghiem, LD; Hai, FI; Zhang, J; Liang, S; Wang, XC (In Press) Science of the Total Environment. HERO ID: 2219790

[Less] Micropollutants are emerging as a new challenge to the scientific community. This review provides a . . . [More] Micropollutants are emerging as a new challenge to the scientific community. This review provides a summary of the recent occurrence of micropollutants in the aquatic environment including sewage, surface water, groundwater and drinking water. The discharge of treated effluent from WWTPs is a major pathway for the introduction of micropollutants to surface water. WWTPs act as primary barriers against the spread of micropollutants. WWTP removal efficiency of the selected micropollutants in 14 countries/regions depicts compound-specific variation in removal, ranging from 12.5 to 100%. Advanced treatment processes, such as activated carbon adsorption, advanced oxidation processes, nanofiltration, reverse osmosis, and membrane bioreactors can achieve higher and more consistent micropollutant removal. However, regardless of what technology is employed, the removal of micropollutants depends on physico-chemical properties of micropollutants and treatment conditions. The evaluation of micropollutant removal from municipal wastewater should cover a series of aspects from sources to end uses. After the release of micropollutants, a better understanding and modeling of their fate in surface water is essential for effectively predicting their impacts on the receiving environment.

Journal Article
Journal Article

High-transparency, self-standable Gel-SLIPS fabricated by a facile nanoscale phase separation

Authors: Okada, I; Shiratori, S (In Press) . HERO ID: 2219806

[Less] Slippery liquid infused porous surfaces (SLIPS) that were both highly transparent and free-standing . . . [More] Slippery liquid infused porous surfaces (SLIPS) that were both highly transparent and free-standing (self-standability) were fabricated by an extremely simple process using non-solvent induced phase separation (NIPS) of a poly (vinylidene fluoride-co-hexa fluoropropylene) (PVDF-HFP)/di-n-butyl phthalate (DBP) solution. We call these "Gel-SLIPS" because the porous PVDF-HFP film fabricated using the NIPS process has been used as a Gel-electrolyte in a lithium ion battery. In previous reports, SLIPS fabrication required complex processes, high anneal temperatures, and drying. Gel-SLIPS can be fabricated from the adjusted solution and the lubricant at room temperature and pressure in 5 minutes by squeegee, cast, or dip methods. NIPS is based on a quick phase separation process in situ, and reduction of the surface energy is not required because of the considerable fluorine in the PVDF-HFP. Moreover, because of the flexible nano-network structure of the PVDF-HFP, the Gel-SLIPS exhibited self-standability and high transmittance (>87 % at 600 nm). Gel-SLIPS is thus highly versatile in terms of fabrication process and film characteristics.

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

Single-solute and bi-solute sorption of phenanthrene and dibutyl phthalate by plant- and manure-derived biochars

Authors: Jin, J; Sun, K; Wu, F; Gao, B; Wang, Z; Kang, M; Bai, Y; Zhao, Y; Liu, X; Xing, B (In Press) Science of the Total Environment. HERO ID: 2219807

[Less] The spatial arrangement of biochar and the exact underlying interaction mechanisms of biochar and hydrophobic . . . [More] The spatial arrangement of biochar and the exact underlying interaction mechanisms of biochar and hydrophobic organic compounds both remain largely unknown. The sorption of dibutyl phthalate (DBP) and phenanthrene (PHE) to plant- and manure-derived biochars in both single- and bi-solute systems was investigated. The significant positive relation between surface polarity and ash content suggests that minerals benefit the external distribution of polar groups on particle surfaces. PHE and DBP sorption by the biochars was regulated by their surface polarity. The PHE generally displayed a pronounced enhancement of DBP sorption, likely resulting from the formation of biochar-PHE-DBP complexes, suggesting that DBP and PHE had different sorption sites on the biochars. The enhancement of Cd(2+) (a soft Lewis acid) on DBP sorption implied that π-π interactions should not dominate DBP sorption by biochars. The influence of Cd(2+) on PHE sorption by biochars would depend on the balance between suppressive sorption by Cd(2+)PHE bonding and enhanced sorption by Cd(2+)-complexed functionalities, and the amounts of Cd(2+) adsorbed by biochars determined the relative role of increased sorption by Cd(2+) in the overall PHE sorption.

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

Deproteinized natural rubber film forming polymeric solutions for nicotine transdermal delivery

Authors: Pichayakorn, W; Suksaeree, J; Boonme, P; Amnuaikit, T; Taweepreda, W; Ritthidej, GC (In Press) Pharm Dev Technol. HERO ID: 1332535

[Less] Film forming polymeric solutions were prepared from DNRL blended with MC, PVA, or SAG, together with . . . [More] Film forming polymeric solutions were prepared from DNRL blended with MC, PVA, or SAG, together with dibutylphthalate or glycerine used as plasticizers. These formulations were easily prepared by simple mixing. In a preliminary step, in situ films were prepared by solvent evaporation in a Petri-dish. Their mechanical and physicochemical properties were determined. The in vitro release and skin permeation of nicotine dissolved in these blended polymers were investigated by a modified Franz diffusion cell. The formulations had a white milky appearance, and were homogeneous and smooth in texture. Their pH was suitable for usage in skin contact. The mechanical property of in situ films depended on the ingredients but all compatible films were in an amorphous phase. The DNRL/PVA was shown to be the most suitable mixture to form completed films. The in vitro release and skin permeation studies demonstrated a biphasic release that provided an initial rapid release followed by a constant release rate that fitted the Higuchi's model. Nicotine loaded DNRL/PVA series were selected for the stability test for 3 months. These formulations needed to be kept at 4°C in tight fitting containers. In conclusion, film forming polymeric solutions could be developed for transdermal nicotine delivery systems.

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

Assessment of organochlorine pesticides and plasticisers in the Selangor River basin and possible pollution sources

Authors: Santhi, VA; Mustafa, AM (In Press) Environmental Monitoring and Assessment. HERO ID: 1332544

[Less] A study on the quality of water abstracted for potable use was conducted in the Selangor River basin . . . [More] A study on the quality of water abstracted for potable use was conducted in the Selangor River basin from November 2008 to July 2009. Seven sampling sites representing the intake points of water treatment plants in the basin were selected to determine the occurrence and level of 15 organochlorine pesticides (OCPs), six phthalate esters (PAEs) and bisphenol A (BPA). Results indicated OCPs were still detected regularly in 66.1 % of the samples with the Σ(15)OCPs ranging from 0.6-25.2 ng/L. The first data on PAEs contamination in the basin revealed Σ(6)PAEs concentrations were between 39.0 and 1,096.6 ng/L with a median concentration of 186.0 ng/L while BPA concentration ranged from <1.2 to 120.0 ng/L. Although di-n-butyl phthalate was detected in all the samples, concentrations of di-ethyl(hexyl)phthalate were higher. Sampling sites located downstream recorded the highest concentrations, together with samples collected during the dry season. Comparison of the detected contaminants with the Department of Environment Water Quality Index (DOE-WQI) showed some agreement between the concentration and the current classification of stream water. While the results suggest that the sites were only slightly polluted and suitable to be used as drinking water source, its presence is cause for concern especially to the fragile firefly "Pteroptyx tener" ecosystem located further downstream.