Urinary concentrations of bisphenol analogues in the south of China population and their contribution to the per capital mass loads in wastewater was written by Wang, Hao;Tang, Shaoyu;Zhou, Xi;Gao, Rui;Liu, Zehua;Song, Xiaofei;Zeng, Feng. And the article was included in Environmental Research in 2022.Electric Literature of C13H12O2 The following contents are mentioned in the article:
Bisphenol analogs (BPs) are heavily used and neg. affect the health of human beings, however, there is little knowledge regarding human exposure to BPs other than BPA. This study aims to assess human exposure to BPs through investigating pooled urine and wastewater samples. Twenty-four pooled urine samples were prepared from 960 specimens (classified by age and gender). Wastewater samples were collected from six major wastewater treatment plants (WWTPs) in Guangzhou, South of China. BPA, BPS, and BPAF were widely detected in urine samples, with a median concentration of 0.96, 0.42, and 0.15μg/L, resp. Median urinary levels of BPA and BPS were higher in males than females (p > 0.05). In addition, BPA and BPS urinary levels in young adults (15-30 years old) were greater than those in children (0-15 years old) (p > 0.05). Nevertheless, most of the BPs were detected in wastewater samples, of which BPA and BPS were predominant BPs, with a median concentration of 1.0 and 0.29μg/L. The average per capital mass loads of ΣBPs on the weekdays of mix typed WWTP was much higher than those of the weekends. Nonetheless, the average loads of ΣBPs on the weekdays of domestic WWTP was slightly lower than those of the weekends. This indicated that important sources of BPs might include industrial wastewater and household cleaning products. Urinary BPA, BPS, and BPAF accounted for less than 5% per capital mass loads in wastewater, suggesting that much of the BPA, BPS, and BPAF in municipal wastewater originate non-human excretion. Hence, the wastewater-based epidemiol. (WBE) approach based on parent compounds is not available for assessing human exposure to BPs, neither for other industrial chems. with diverse sources in municipal wastewater. These results contributes to the development of an efficient surveillance system which can provide insight in the trends of human exposure of BPs. This study involved multiple reactions and reactants, such as 4,4′-Methylenediphenol (cas: 620-92-8Electric Literature of C13H12O2).
4,4′-Methylenediphenol (cas: 620-92-8) belongs to alcohols. Under appropriate conditions, inorganic acids also react with alcohols to form esters. To form these esters, a wide variety of specialized reagents and conditions can be used. The most common reactions of alcohols can be classified as oxidation, dehydration, substitution, esterification, and reactions of alkoxides.Electric Literature of C13H12O2
Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts