INVESTIGATING THE ROLE OF MONTMORILLONITE CLAY ON THE TRANSPORT OF CAFFEINE, BISPHENOL A, SULFAMETHOXAZOLE, AND CARBAMAZEPINE IN GROUNDWATER

Abstract The iron and manganese oxide filter film (MeOx) were used to research the simultaneous removal of bisphenol A (BPA), manganese (Mn2+) and ammonium (NH4+) in a pilot-scale filter system. We found that 0.52 mg/L of BPA could be removed while consuming 5.44 mg/L of dissolved oxygen (DO). Since the oxidation process of NH4+ and BPA both consume the DO in water, the presence of NH4+ can hinder the removal of BPA. The presence of Mn2+ in water had a synergy effect on the BPA removal. The filter film was characterized by SEM, XRD and XPS. Some substances were generated to block the pores of the oxide film, and a small amount of film was found to crack and fall off. The elemental composition of C and O were both increased by about 9%, the composition of Mn was decreased from 63.48% to 44.55%, and the reduced manganese substance might affect the activity of the oxide film. The main chemical forms of MeOx are Mn6O12·3H2O, MnFe2O4 or Mn3O4. The decrease in the removal efficiency of BPA was mainly due to the C-containing intermediate [−CH2C − H(OH)]n covering the surface of the oxide film and blocking the pore size of the film.

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P174 – 2732: Increased serum phthalates (MEHP, DEHP) and bisphenol A concentrations in children with autism: The role of endocrin disruptors in autism aetiopathogenesis

European Journal of Paediatric Neurology ◽

10.1016/s1090-3798(15)30487-6 ◽

2015 ◽

Vol 19 ◽

pp. S142-S143

Author(s):

F. Kardas ◽

A.K. Bayram ◽

S. Ozmen ◽

E. Özdemir Demirci ◽

L. Akin ◽

...

Keyword(s):

Bisphenol A ◽

Children With Autism

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Bisphenol A Altersβ-hCG and MIF Release by Human Placenta: AnIn VitroStudy to Understand the Role of Endometrial Cells

Mediators of Inflammation ◽

10.1155/2014/635364 ◽

2014 ◽

Vol 2014 ◽

pp. 1-11 ◽

Cited By ~ 12

Author(s):

C. Mannelli ◽

F. Ietta ◽

C. Carotenuto ◽

R. Romagnoli ◽

A. Z. Szostek ◽

...

Keyword(s):

Bisphenol A ◽

Conditioned Medium ◽

Human Placenta ◽

Environmental Chemicals ◽

Endometrial Cells ◽

Direct Exposure ◽

And Control ◽

Cell Conditioned Medium

A proper fetomaternal immune-endocrine cross-talk in pregnancy is fundamental for reproductive success. This might be unbalanced by exposure to environmental chemicals, such as bisphenol A (BPA). As fetoplacental contamination with BPA originates from the maternal compartment, this study investigated the role of the endometrium in BPA effects on the placenta. To this end,in vitrodecidualized stromal cells were exposed to BPA 1 nM, and their conditioned medium (diluted 1 : 2) was used on chorionic villous explants from human placenta. Parallel cultures of placental explants were directly exposed to 0.5 nM BPA while, control cultures were exposed to the vehicle (EtOH 0.1%). After 24–48 h, culture medium from BPA-treated and control cultures was assayed for concentration of hormone human Chorionic Gonadotropin (β-hCG) and cytokine Macrophage Migration Inhibitory Factor (MIF). The results showed that direct exposure to BPA stimulated the release of both MIF andβ-hCG. These effects were abolished/diminished in placental cultures exposed to endometrial cell-conditioned medium. GM-MS analysis revealed that endometrial cells retain BPA, thus reducing the availability of this chemical for the placenta. The data obtained highlight the importance ofin vitromodels including the maternal component in reproducing the effects of environmental chemicals on human fetus/placenta.

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