Incidence of personal care products in surface water of Middle Tennessee Urban and rural sub-watersheds was written by Kaur, Ravneet;Akuley-Amenyenu, Anonya;Deng, Qi;Dennis, Sam O.. And the article was included in Journal of Water Resource and Protection in 2018.Recommanded Product: Methyl heptanoate The following contents are mentioned in the article:
Personal care products (PCPs) are stable and are recognized as important chems. of emerging concern in freshwater resources in the United States (US), including surface water. Although little is known about the bio accessibility or biodegradation of these chems. in the environment. Their primary source of entry into water bodies includes activities such as bathing and showering as well as improper disposal of unused personal care products. We conducted a study to monitor the incidence of personal care products in two rivers (surface water) in Middle Tennessee. The objectives were to determine the incidence of personal care products in surface water of urban and rural sub-watersheds. Secondly, to identify the most frequently detected PCPs in the rivers monitored in the sub-watershed. Water samples were collected from the Cumberland River and Collins River. These rivers represented surface water drained by urban and rural watersheds resp. in Middle Tennessee. The surface water samples were analyzed for the presence of personal care products using GC-MS. During sampling, water quality parameters of interest were collected in-situ with a multi-parameter data-sonde. Low-level concentration of compounds containing PCPs was detected in the two rivers monitored. Personal care products detected included the active ingredients in perfumes (Docosane, Heptadecane, Me hexadecanoate, and Undecane), antiperspirants (Octadecanol, and Pentadecalactone), skin conditioners (Cyclotrisiloxane, Isohexyl palmitate, Me palmitate, and Cedrol), and shampoos (1-Hexadecanol, Hexadecanoic acid, and Nonanal). This study involved multiple reactions and reactants, such as Methyl heptanoate (cas: 106-73-0Recommanded Product: Methyl heptanoate).
Methyl heptanoate (cas: 106-73-0) belongs to esters. Esters typically have a pleasant smell; those of low molecular weight are commonly used as fragrances and are found in essential oils and pheromones. Many esters have the potential for conformational isomerism, but they tend to adopt an s-cis (or Z) conformation rather than the s-trans (or E) alternative, due to a combination of hyperconjugation and dipole minimization effects. The preference for the Z conformation is influenced by the nature of the substituents and solvent, if present. Lactones with small rings are restricted to the s-trans (i.e. E) conformation due to their cyclic structure.Recommanded Product: Methyl heptanoate
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics