high quality occurrence and concentration of phthalate esters

  • occurrence, distribution, and ecological risks of phthalate

    Occurrence, distribution, and ecological risks of phthalate

    Occurrence, distribution, and ecological risks of phthalate esters in the seawater and sediment of Changjiang River Estuary and its adjacent area Author links open overlay panel Ze-Ming Zhang a Hong-Hai Zhang a c Jing Zhang a c Qian-Wen Wang a Gui-Peng Yang a b c

  • occurrence and removal characteristics of phthalate esters

    Occurrence and Removal Characteristics of Phthalate Esters

    The presence of phthalate esters (PAEs) in the environment has gained a considerable attention due to their potential impacts on public health. This study reports the first data on the occurrence of 15 PAEs in the water near the Mopanshan Reservoir—the new and important water source of Harbin city in Northeast China.

  • occurrence and risk assessment of phthalate esters (paes)

    Occurrence and risk assessment of phthalate esters (PAEs)

    Phthalate esters (PAEs) are suspected of having adverse effects on human health and have been frequently detected in soils and vegetables. The present study investigated their occurrence and composition in plastic film greenhouse soil–vegetable systems and assessed their potential health risks to farmers exposed to these widespread pollutants.

  • phthalate

    Phthalate

    Phthalate esters are the dialkyl or alkyl aryl esters of phthalic acid (also called 1,2-benzenedicarboxylic acid, not be confused with the structurally isomeric terephthalic or isophthalic acids ); the name "phthalate" derives from phthalic acid, which itself is derived from the word "naphthalene". When added to plastics, phthalates allow the

  • occurrence and removal characteristics of phthalate esters

    Occurrence and Removal Characteristics of Phthalate Esters

    1. Introduction. Phthalate acid esters, a class of chemical compounds mainly used as plasticizers for polyvinyl chloride (PVC) or to a lesser extent other resins in different industrial activities, are ubiquitous in the environment and have evoked interest in the past decade due to endocrine disrupting effects and their potential impacts on public health [1–3].

  • distribution of phthalate esters in air, water, sediments

    Distribution of phthalate esters in air, water, sediments

    1. Introduction. Phthalate esters (PEs) are a group of chemical plasticizers that are primarily used to soften and make polyvinyl chloride (PVC) flexible (Lyche, 2017).PEs are used in a very wide PVC applications including the building and construction, automotive, flooring, and electric cables, however some phthalates are also used in non-PVC applications such as solvents, coatings, rubber

  • microplastics release phthalate esters and cause aggravated

    Microplastics release phthalate esters and cause aggravated

    Phthalate esters (PAEs), as common plasticizers, are widely used in many commodities such as toys, food packaging, detergents, and personal care products, leading to PAEs contamination worldwide (Net et al., 2015, Wormuth et al., 2006). The ubiquity of MPs and PAEs in the environment makes them inevitable to encounter each other and cause

  • phthalate ester

    Phthalate Ester

    Although almost any alcohol can be used to make a phthalate ester, it is usually only the esters of the C6 to C13 alcohols that are useful as PVC plasticizers. Esters made with C4 or C5 alcohols produce plasticizers with high-volatile losses, while phthalate esters made from alcohols with carbon numbers greater than C13 are not compatible with PVC.

  • (pdf) microplastics release phthalate esters and cause

    (PDF) Microplastics release phthalate esters and cause

    Microplastics release phthalate esters and cause aggravated adverse effects in the mouse gut 2017. Occurrence and e We conclude that more high quality data is needed on the occurrence of

  • contamination of phthalate esters (paes) in typical

    Contamination of Phthalate Esters (PAEs) in Typical

    The Wangyang River (WYR) basin is a typical wastewater irrigation area in Hebei Province, North China. This study investigated the concentration and distribution of six priority phthalate esters (PAEs) in the agricultural soils in this area. Thirty-nine soil samples (0–20 cm) were collected along the WYR to assess the PAE residues in soils.

  • (pdf) occurrence and concentration of phthalate esters

    (PDF) Occurrence and Concentration of Phthalate Esters

    The mean pool phthalate level and mean pH value were 91.67 mu g/L and 2.82 +/- 0.30 in group 1; 116.93 mu g/L and 2.75 +/- 0.32 in group 2; 819.40 mu g/L and 2.88 +/- 0.15 in group 3; 542.63 mu g

  • exposure to phthalate esters from indoor environment

    Exposure to phthalate esters from indoor environment

    Elevated concentrations of phthalate esters were detected and the concentration was higher than the ambient level by three orders of magnitude. The occurrence of phthalate ester and di-2

  • occurrence, spatial distribution, historical trend

    Occurrence, spatial distribution, historical trend

    1. Introduction. Phthalate esters (PAEs) are mainly utilized as plasticizers in the plastic industry and easily re-discharged into the environment during the aging and decomposition of plastic products since PAEs are bonded to the polymer matrices with weak intermolecular force (Yuan et al., 2002, Shea, 2003, Dargnat et al., 2009).

  • phthalate concentrations and dietary exposure from food

    Phthalate Concentrations and Dietary Exposure from Food

    Phthalate measurement in food is difficult because of the ubiquitous occurrence of phthalates in many products, including analytical solvents as well as laboratory air and equipment. Although some phthalate food concentration studies appear in the scientific literature, the results may suffer from the issue of ubiquitous contamination.

  • occurrence and removal characteristics of phthalate esters

    Occurrence and Removal Characteristics of Phthalate Esters

    The presence of phthalate esters (PAEs) in the environment has gained a considerable attention due to their potential impacts on public health. This study reports the first data on the occurrence of 15 PAEs in the water near the Mopanshan Reservoir—the new and important water source of Harbin city in Northeast China. As drinking water is a major source for human exposure to PAEs, the

  • occurrence of phthalic acid esters in marine organisms from

    Occurrence of phthalic acid esters in marine organisms from

    The carrier gas is high purity helium (99.999%) at the flow rate of 1.0 mL/min. occurrence and biota concentration of phthalate esters in Epe et al.Occurrence

  • phthalate esters in foods: sources, occurrence

    Phthalate Esters in Foods: Sources, Occurrence

    Request PDF | Phthalate Esters in Foods: Sources, Occurrence, and Analytical Methods | Phthalates are a group of diesters of ortho-phthalic acid (dialkyl or alkyl aryl esters of 1,2

  • environmental occurrence and biota concentration of phthalate

    Environmental occurrence and biota concentration of phthalate

    Sigma-Aldrich offers abstracts and full-text articles by [Aina O Adeogun, Oju R Ibor, Emmanuel D Omogbemi, Azubuike V Chukwuka, Rachel A Adegbola, Gregory A Adewuyi, Augustine Arukwe].

  • phthalate concentrations and dietary exposure from food

    Phthalate Concentrations and Dietary Exposure from Food

    Phthalate measurement in food is difficult because of the ubiquitous occurrence of phthalates in many products, including analytical solvents as well as laboratory air and equipment. Although some phthalate food concentration studies appear in the scientific literature, the results may suffer from the issue of ubiquitous contamination.

  • microplastics release phthalate esters and cause aggravated

    Microplastics release phthalate esters and cause aggravated

    Phthalate esters (PAEs), as common plasticizers, are widely used in many commodities such as toys, food packaging, detergents, and personal care products, leading to PAEs contamination worldwide (Net et al., 2015, Wormuth et al., 2006). The ubiquity of MPs and PAEs in the environment makes them inevitable to encounter each other and cause

  • esters vs. phenols in beer | american homebrewers association

    Esters vs. Phenols in Beer | American Homebrewers Association

    This is because high hydrostatic pressure and levels of CO2 in the tall, narrow vessels inhibit ester formation. Phenols. Some form of phenols or polyphenols are always present in beer, but when beer drinkers note they are picking up “phenols” or describe a beer as “phenolic” they tend to be referring to the aromas of volatile phenols.

  • occurrence and removal characteristics of phthalate esters

    Occurrence and Removal Characteristics of Phthalate Esters

    The presence of phthalate esters (PAEs) in the environment has gained a considerable attention due to their potential impacts on public health. This study reports the first data on the occurrence of 15 PAEs in the water near the Mopanshan Reservoir—the new and important water source of Harbin city in Northeast China. As drinking water is a major source for human exposure to PAEs, the

  • phthalate esters in foods: sources, occurrence

    Phthalate Esters in Foods: Sources, Occurrence

    Request PDF | Phthalate Esters in Foods: Sources, Occurrence, and Analytical Methods | Phthalates are a group of diesters of ortho-phthalic acid (dialkyl or alkyl aryl esters of 1,2

  • (pdf) occurrence and concentration of phthalate esters

    (PDF) Occurrence and Concentration of Phthalate Esters

    The mean pool phthalate level and mean pH value were 91.67 mu g/L and 2.82 +/- 0.30 in group 1; 116.93 mu g/L and 2.75 +/- 0.32 in group 2; 819.40 mu g/L and 2.88 +/- 0.15 in group 3; 542.63 mu g

  • fujitsu develops simplified method to identify the presence

    Fujitsu Develops Simplified Method to Identify the Presence

    Detect phthalate esters in the collection film with high sensitivity using metal-plate reflectance. To fulfill these requirements, a number of parameters needed to be set, including the duration and temperature of the sample's heating, the temperature of the collection film, heating related to radiant heat, and collection film spacing.

  • aquatic toxicity of eighteen phthalate esters - staples

    Aquatic toxicity of eighteen phthalate esters - Staples

    Phthalate ester hydrolysis is a relatively slow process that may be influenced by steric hindrance due to the configuration of the alcohol side chain (e.g., 2‐ethylhexanol) . Phthalate esters biodegrade both aerobically and anaerobically in aquatic environments. Longer half‐lives may occur in anaerobic, oligotrophic, or cold environments.

  • dibutyl phthalate (dbp) | health & environmental research

    Dibutyl Phthalate (DBP) | Health & Environmental Research

    [More] Ultrasound-assisted dispersive liquid-liquid microextraction coupled with high performance liquid chromatography (UA-DLLME-HPLC) was developed for the determination of four typical phthalate esters (PAEs). The analyzed PAEs included dimethyl phthalate (DMP), diethyl phthalate (DEP), dibutyl phthalate (DBP) and di-n-octyl phthalate (DnOP).

  • dibutyl phthalate alters the metabolic pathways of microbes

    Dibutyl phthalate alters the metabolic pathways of microbes

    Dibutyl phthalate (DBP) is well known as a high-priority pollutant. This study explored the impacts of DBP on the metabolic pathways of microbes in black soils in the short term (20 days). The

  • aquatic toxicity of eighteen phthalate esters - staples

    Aquatic toxicity of eighteen phthalate esters - Staples

    Phthalate ester hydrolysis is a relatively slow process that may be influenced by steric hindrance due to the configuration of the alcohol side chain (e.g., 2-ethylhexanol) . Phthalate esters biodegrade both aerobically and anaerobically in aquatic environments. Longer half-lives may occur in anaerobic, oligotrophic, or cold environments.

  • comments on an annex xv dossier for identifcation of a

    COMMENTS ON AN ANNEX XV DOSSIER FOR IDENTIFCATION OF A

    component (dihexyl phthalate – CAS #: 84-75-3; EC #: 201-559-5). The proposal by the Swedish Chemicals Agency would not be unreasonable in the situation where no data exist for the substance in question (1,2-benzenedicarboxylic acid, di-C6-10-alkyl esters). It is, however, not reasonable when high quality studies are available for 1,2-

  • comments on an annex xv dossier for identifcation of a

    COMMENTS ON AN ANNEX XV DOSSIER FOR IDENTIFCATION OF A

    component (dihexyl phthalate – CAS #: 84-75-3; EC #: 201-559-5). The proposal by the Swedish Chemicals Agency would not be unreasonable in the situation where no data exist for the substance in question (1,2-benzenedicarboxylic acid, di-C6-10-alkyl esters). It is, however, not reasonable when high quality studies are available for 1,2-

  • characterization and genome analysis of a phthalate esters

    Characterization and genome analysis of a phthalate esters

    A bacterium capable of utilizing dimethyl phthalate (DMP), diethyl phthalate (DEP), di-n-butyl phthalate (DBP), and diisobuthyl phthalate (DIBP) as the sole carbon and energy source was isolated from shallow aquifer sediments. The strain was identified as Sphingobium yanoikuyae SHJ based on morphological characteristics, 16S rDNA gene phylogeny, and whole genome average nucleotide identity

  • peroxisome proliferator-activated receptors: mediators

    Peroxisome Proliferator-Activated Receptors: Mediators

    To determine whether phthalate esters interact directly with PPARs, the scintillation proximity assay (Nichols et al., 1998) was used to assess the ability of phthalate esters to bind to human PPARα and PPARγ (Lapinskas et al., 2004). Some monoester phthalates interacted with both receptors, including, monohexyl phthalate, monooctyl phthalate

  • aquatic toxicity of eighteen phthalate esters - staples

    Aquatic toxicity of eighteen phthalate esters - Staples

    Phthalate ester hydrolysis is a relatively slow process that may be influenced by steric hindrance due to the configuration of the alcohol side chain (e.g., 2-ethylhexanol) . Phthalate esters biodegrade both aerobically and anaerobically in aquatic environments. Longer half-lives may occur in anaerobic, oligotrophic, or cold environments.

  • draft scope of the risk evaluation for dicyclohexyl phthalate

    Draft Scope of the Risk Evaluation for Dicyclohexyl Phthalate

    was assessed under Environment Tier II of IMAP as part of the phthalate esters. In 2015, dicyclohexyl phthalate was also assessed as a Priority Existing Chemical (Assessment Report No. 40) (National Industrial Chemicals Notification and Assessment Scheme (NICNAS). Chemical inventory. Database accessed April 3, 2019).

  • cn104072372a - preparation method of dioctyl phthalate (dop

    CN104072372A - Preparation method of dioctyl phthalate (DOP

    The invention discloses a preparation method of dioctyl phthalate (DOP). The preparation method comprises the following steps: adding the raw materials including phthalic anhydride and superfluous isooctyl alcohol to a reaction kettle, adding concentrated sulfuric acid as a catalyst, controlling the temperature in the reaction kettle to be 0-150 DEG C, reacting for 16-20 hours, neutralizing