One-step extraction prior to two-step detection by ultra high performance liquid chromatography tandem mass spectrometry (UHPLC-MS/MS) to determine different groups of antibacterial agents in infant disposable hygiene products was written by Dang, Hua;Liu, Donghong;Hou, Xiangchang;Wu, Yuluan;Wang, Bin;Dong, Hao;Xian, Yanping. And the article was included in Analytical Methods in 2017.COA of Formula: C25H46ClN The following contents are mentioned in the article:
One-step extraction prior to a two-step detection method based on UHPLC-MS/MS was developed to determine seven quaternary ammonium salts (QACs), three isothiazolinone antibacterial agents and seven phenolic antibacterial agents in infant disposable hygiene products. Samples were ultrasonically extracted by acetonitrile; the extraction solution was directly used to sep. seven QACs on a hydrophilic chromatog. column (HILIC column) by isocratic elution (0.1% formic acid acetonitrile and 10 mmol L-1 ammonium acetate solution as the mobile phases). QACs were then detected in multiple reaction monitoring (MRM) of MS/MS under an electro-spray ionization source in pos. mode (ESI+). For the remaining ten analytes, the extraction solution was dried by nitrogen gas blowing and re-dissolved with acidulated methanol water solution Then they were separated on a C18 chromatog. column with gradient elution program using methanol and water as mobile phases. Finally, ten analytes were simultaneously ionized by using a electro-spray source in pos. and neg. modes and acquisition was achieved in MRM. The developed methods were validated in terms of the method limit of detection and quantitation (MLOD and MLOQ), matrix effects, recovery and precision. Results indicated that favorable linear relations (r > 0.997) were obtained over the selected concentration ranges of 0.1-50μg L-1, 1.0-500μg L-1 and 50-2000μg L-1 for QACs, isothiazolinone antibacterial agents and phenolic antibacterial agents, resp. The MLODs of the three groups of antibacterial agents were 0.8μg kg-1, 1.5-6.5μg kg-1 and 200-500μg kg-1, resp. Recoveries were calculated at three concentration levels spiked in neg. paper diaper samples and the values were found between 83.7% and 112% with relative standard deviation (RSD) values less than 13% for intra-day precision (n = 6) and less than 16% for inter-day precision (n = 5). The developed and validated methods were successfully applied to determine the concentrations of antibacterial agents in real samples and QACs and isothiazolinone antibacterial agents were detected in several samples. These methods are rapid, sensitive and suitable for the determination of antibacterial agents in infant disposable hygiene products and some other similar products. This study involved multiple reactions and reactants, such as N-Benzyl-N,N-dimethylhexadecan-1-aminium chloride (cas: 122-18-9COA of Formula: C25H46ClN).
N-Benzyl-N,N-dimethylhexadecan-1-aminium chloride (cas: 122-18-9) belongs to organic chlorides. Organic chlorides can be used in production of: PVC, pesticides, chloromethane, teflon, insulators. Alkanes and aryl alkanes may be chlorinated under free radical conditions, with UV light. However, the extent of chlorination is difficult to control.COA of Formula: C25H46ClN
Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics