The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 23, 2024
Filed:
Feb. 28, 2020
Jiangsu University of Science and Technology, Jiangsu, CN;
Sheng Tang, Jiangsu, CN;
Wei Shen, Jiangsu, CN;
Tong Qi, Jiangsu, CN;
Mengchan Xu, Jiangsu, CN;
Mengyuan Xu, Jiangsu, CN;
Anni Zhu, Jiangsu, CN;
JIANGSU UNIVERSITY OF SCIENCE AND TECHNOLOGY, Jiangsu, CN;
Abstract
The present invention provides a method for determining hydrogen sulfide (HS) by headspace single-drop liquid phase microextraction and intelligent device colorimetry, which comprises: taking a silver-gold core-shell triangular nanosheet (Ag@Au TNS) as a nanodetection probe, in combination with an analysis method of headspace single-drop microextraction (HS-SDME), specifically extracting HS volatilized from a sample to be detected by the nanodetection probe, and detecting HS in the extracted sample with the help of the photographing function of an intelligent device and a color picking software. Compared with the prior art, the present invention adopts intelligent device colorimetry, with the limit of detection of about 65 nM and the linear range of 0.1-100 μM, and the established method can be applied to the determination of HS in actual samples such as egg white, milk and other opaque samples, and has the advantages of few procedures, simple operation, high detection efficiency and the like.