Enhancing the activity and thermal stability of a phthalate-degrading
The optimal pH was determined in various buffers at pH 3.0–11.0 (20 mM citrate buffer (pH 3–6), 10 mM Na 2 HPO 4 -NaH 2 PO 4 buffer (pH 6–8), 100 mM Tris-HCl buffer (pH 8–9), 50 mM Glycine-NaOH buffer (pH 9–11)). The pH stability was investigated by pre-incubating in buffers (pH 6.0–10.6) at 40 °C for 1 h.
Potential risk of BPA and phthalates in commercial water bottles: a
BPA, benzyl butyl phthalate (BBP), di-n-butyl phthalate (DBP) and di (2-ethylhexyl) phthalate (DEHP) can cause adverse effects on human health. Papers of literature published in English, with BPA, BBP, DBP and DEHP detections during 2017, by 2025 by liquid chromatography and gas chromatography analysis methods were searched.
Investigation and risk assessment of dibutyl phthalate in a typical
Compared with the TDI (10 μg/kg-bw/d), the exposure to DBP by drinking beverages was sufficiently low, even when the highest concentration of DBP was used to calculate EDI. The values of HI for health risks which are lower than 1.0 ( Table 3 ), indicating that exposure to DBP through beverages was tolerable and safe for local residents.
Source tracing and health risk assessment of phthalate esters
The results for all approximately 300 tap water samples collected from 6 sampling stations at household kitchens from Nov. 30, 2017, to Dec. 6, 2018, showed that dimethyl phthalate (DMP), diethyl phthalate (DEP), diisobutylphthaate (DIBP), di-n-butyl phthalate (DBP), and di(2-ethylhexyl) phthalate (DEHP) could be identified and quantified among the 16 PAE congeners with the developed gas
Phthalate ester migration into food: effect of packaging material and
DEHP was the most phthalate esters found in food samples. The highest DEHP value 830.30 ng/kg was recorded in pickled tunny bonito packed in PP on the 4th month. DEHP, DBP, and DINP were also...
- Is benzylbutyl phthalate (bzbp) present in drinking water in Vietnam?
- Very high concentrations (μg/L level) of DEHP, benzylbutyl phthalate (BzBP), DEP, and DBP were detected in surface waters from the Red River, Hanoi, Hue, Danang, and Ho Chi Minh City ( Chau et al., 2018 ). Nevertheless, no earlier studies have reported the occurrence of PAEs in drinking water in Vietnam.
- Is there a correlation between DMP and DBP in bottled water?
- In bottled water samples, moderate correlations (Spearman's rho = 0.53–0.76; p < 0.05) were observed for several pairs such as DMP and DEP, DBP, DnOP; DEP and DBP, DiBP, DnOP; DEHP and BzBP; and DBP and DiBP. No significant correlation among PAEs was found in tap water samples.
- Is dibutyl phthalate a good plasticizer for nitrocellulose?
- Dibutyl phthalate is an excellent plasticizer for nitrocellulose with strong gelation ability. It is used in nitrocellulose coatings and has a good softening effect. Stability, flexure resistance, adhesion and water resistance are better than other plasticizers.
- What is the NOAEL level of bzbp & DEHP in water?
- The no observed adverse effect level (NOAEL) of BzBP, DEHP, DBP, DEP, and DMP in water were 0.10; 0.32; 20; 600; and 2000 μg/L, respectively (US EPA, 2015 ). The Vietnamese Ministry of Health only regulates DEHP in drinking water with a maximum permissible limit of 1500 μg/L ( Vietnam Ministry of Health, 2011 ).
- What is the concentration of dimethyl phthalate (DMP)?
- The sum concentrations of dimethyl phthalate (DMP), diethyl phthalate (DEP), and dibutyl phthalate (DBP) measured in polyethylene terephthalate (PET) bottles in Beijing ranged from 102 to 710 μg/kg ( Xu et al., 2020 ).
- Which phthalate is most common in wastewater treatment plants?
- Among PAEs, di- (2-ethylhexyl) phthalate (DEHP) accounted for a major proportion of total concentrations (45%) in wastewater, followed by diisobutyl phthalate (DiBP, 10.3%), and dibutyl phthalate (DBP, 9.53%). Concentrations of PAEs in wastewater decreased significantly with distance from the wastewater treatment plants (WWTPs).
