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Your search keyword '"Sirui He"' showing total 2 results
Start Over Author "Sirui He" Topic chemistry
2 results on '"Sirui He"'

1. Sustainable, Highly Efficient and Superhydrophobic Fluorinated Silica Functionalized Chitosan Aerogel for Gravity-Driven Oil/Water Separation

Author

Zhongjie Zhu, Lei Jiang, Jia Liu, Sirui He, and Wei Shao

Subjects
superhydrophobicity, fluorinated silica, chitosan, oil adsorption, oil/water separation, Science, Chemistry, QD1-999, Inorganic chemistry, QD146-197, General. Including alchemy, QD1-65
Abstract

A superhydrophobic fluorinated silica functionalized chitosan (F-CS) aerogel is constructed and fabricated by a simple and sustainable method in this study in order to achieve highly efficient gravity-driven oil/water separation performance. The fluorinated silica functionalization invests the pristine hydrophilic chitosan (CS) aerogel with promising superhydrophobicity with a water contact angle of 151.9°. This novel F-CS aerogel possesses three-dimensional structure with high porosity as well as good chemical stability and mechanical compression property. Moreover, it also shows striking self-cleaning performance and great oil adsorption capacity. Most importantly, the as-prepared aerogels exhibits fast and efficient separation of oil/water mixture by the gravity driven process with high separation efficiency. These great performances render the prepared F-CS aerogel a good candidate for oil/water separation in practical industrial application.

Published
2021
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2. A pharmacokinetics study of orally administered higenamine in rats using LC-MS/MS for doping control analysis

Author

Sirui He, Xiaoping Xiong, Xiaoping Xu, Rui Wang, and Ming Yang

Subjects
Male, External application, Pharmaceutical Science, Administration, Oral, Urine, 01 natural sciences, Analytical Chemistry, Rats, Sprague-Dawley, 03 medical and health sciences, chemistry.chemical_compound, 0302 clinical medicine, Alkaloids, Pharmacokinetics, Oral administration, Limit of Detection, Tandem Mass Spectrometry, Tetrahydroisoquinolines, Lc ms ms, Environmental Chemistry, Animals, 030216 legal & forensic medicine, Spectroscopy, Chromatography, High Pressure Liquid, Higenamine, Doping in Sports, Chromatography, 010401 analytical chemistry, Extraction (chemistry), 0104 chemical sciences, Rats, Substance Abuse Detection, chemistry, Medicinal herbs, Female
Abstract

According to WADA guidelines, the presence of Higenamine (HG) in urine should not be ≥10 ng/mL. HG is widely found in materials used in Chinese herbal medicines as well as food and additives. This paper is the first method wherein a rat model has been used to evaluate the pharmacokinetics of orally administered HG by LC-MS/MS and would be helpful in doping control analysis. The method was found to be linear over a concentration range of 0.5(lower limit of quantification, LLOQ)-500 ng/mL for plasma and 0.5(LLOQ)-1000 ng/mL for urine. The values for intra- and inter-day accuracy and precision did not deviate by >12.25% for HG in plasma and 5.87% in urine. Extraction recoveries of HG were 70.30-86.71% from plasma and 74.93%-79.29% from urine. HG was stable in plasma and urine after the extraction process and when exposed to different storage conditions. The findings of this study could provide some reference value for the assessment of HG misuse and for the control of intake and external application of HG-related materials (foods and medicinal herbs). Our key findings are that high levels of external application or oral administration of HG-rich materials may lead to a positive urine test for HG in athletes.

Published
2019

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