Determination of 18 Biocides in Both the Dissolved and Particulate Fractions of Urban and Surface Waters by HPLC-MS/MS was written by Paijens, Claudia;Frere, Bertrand;Caupos, Emilie;Moilleron, Regis;Bressy, Adele. And the article was included in Water, Air, & Soil Pollution in 2020.Electric Literature of C25H46ClN The following contents are mentioned in the article:
A robust method is provided to analyze 18 hydrophilic and hydrophobic biocides in both dissolved and particulate fractions of five types of urban and surface waters using high-performance liquid chromatog. coupled to tandem mass spectrometry. The linearity, accuracy, and intermediate precision were validated. The target biocides were enriched by solid-phase extraction using Chromabond HR-X 200-mg cartridges and eluted with methanol, Et acetate, and dichloromethane. Suspended matter was extracted by microwave-assisted extraction in methanol and dichloromethane. Recoveries and variability (resp. > 75% and < 30% for most of the target biocides and matrixes) made it possible to quantify biocides at a trace level in all matrixes. Limits of quantification were in the range of nanograms per L in the dissolved fraction and in the range of nanograms per g of dry weight in the particulate fraction for most of the biocides and matrixes, and were generally lower than those reported in previous studies. The method was successfully applied to surface waters, treated and untreated wastewater, combined sewer overflows, and stormwater, providing unique data in these matrixes for some substances, in particular with respect to particle contamination. In urban waters, concentrations of most of the biocides ranged from 10 to 200 ng/L. Diuron, isothiazolinone, and benzalkonium concentrations could reach 0.9, 0.9, and 20μg/L resp. In rivers, most of the biocides were measured at less than 10 ng/L, but higher concentrations were observed for benzalkoniums (up to 200 ng/L) or after rain events, which indicates biocide transfer from urban surfaces into the aquatic environment during wet weather. This study involved multiple reactions and reactants, such as N-Benzyl-N,N-dimethylhexadecan-1-aminium chloride (cas: 122-18-9Electric Literature of C25H46ClN).
N-Benzyl-N,N-dimethylhexadecan-1-aminium chloride (cas: 122-18-9) belongs to organic chlorides. An organic chloride is an organic compound containing at least one covalently bonded atom of chlorine. Their wide structural variety and divergent chemical properties lead to a broad range of names and applications. The haloform reaction, using chlorine and sodium hydroxide, is also able to generate alkyl halides from methyl ketones, and related compounds. Chloroform was formerly produced thus.Electric Literature of C25H46ClN
Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics