Du, Bibai;Li, Quan;Pan, Zibin;Zhang, Yun;Xie, Ruiman;Luo, Dan;Zeng, Lixi published 《Improved LC-MS/MS Method for the Simultaneous Determination of Synthetic Phenol Antioxidants and Relevant Metabolites Making Use of Atmospheric Pressure Chemical Ionization and a Trap Column》 in 2021. The article was appeared in 《Environmental Science & Technology Letters》. They have made some progress in their research.Electric Literature of C14H22O The article mentions the following:
The prevalently used LC-MS/MS methods for the simultaneous determination of synthetic phenol antioxidants (SPAs) and relevant metabolites suffer from a serious drawback of low sensitivity for 2,6-di-tert-butyl-4-hydroxytoluene (BHT) and a common issue of background contamination, which hampers the simple and accurate detection of these substances at trace levels in environmental samples. In this study, we developed an improved LC-MS/MS method for the simultaneous determination of eight SPAs and four relevant metabolites, including BHT. By use of atm. pressure chem. ionization (APCI), the sensitivity of BHT in the LC-MS/MS was enhanced approx. 260 times vs. results obtained by using electrospray ionization (ESI), which allowed the anal. of BHT up to 1.1 ng/g in indoor dust and 0.06 ng/g in human plasma. Similarly, the sensitivity of 2,4,6-tri-tert-butylphenol and 2,6-di-tert-butyl-4-sec-butylphenol was also enhanced with APCI, which avoided their sep. anal. by GC-MS. By installation of a C18 column after the eluent mixer and before the injector as a trap column, the target analytes leached out from the LC system were eluted at a much later retention time than those in the samples, which resulted in complete elimination of the instrumental background contamination. These improvements enable the method to be well applied to the real samples. The experimental procedure involved many compounds, such as 4-tert-Octylphenol (cas: 140-66-9) .
4-tert-Octylphenol(cas: 140-66-9) is a common environmental pollutant showing weak estrogenic effects.Electric Literature of C14H22O It has been shown to cause harm to vertebrate male reproductive systems.
Reference:
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