Title:
METHOD FOR DETECTING SODIUM POLYSULFIDE
Document Type and Number:
WIPO Patent Application WO/2019/134355
Kind Code:
A1
Abstract:
Provided is a method for detecting sodium polysulfide, comprising the following steps: a) adding an ammonium salt agent to an analyte, such that sodium polysulfide in the analyte reacts with the ammonium salt, and determining, by means of a potentiometric titration method, the titration end point to obtain a sulfur deposit; and b) performing, according to a molar quantity of ammonium ions in the ammonium salt agent consumed in step a) and a mass of the sulfur deposit, calculation to obtain a sodium polysulfide content in the analyte.
Inventors:
CAO JIAYUE (CN)
LI WOYUAN (CN)
DENG HANGJUN (CN)
LIAN MING (CN)
ZHOU GUIYANG (CN)
ZHOU JUNYAO (CN)
LI WOYUAN (CN)
DENG HANGJUN (CN)
LIAN MING (CN)
ZHOU GUIYANG (CN)
ZHOU JUNYAO (CN)
Application Number:
PCT/CN2018/093972
Publication Date:
July 11, 2019
Filing Date:
July 02, 2018
Export Citation:
Assignee:
ZHEJIANG NHU SPECIAL MAT CO LTD (CN)
ZHEJIANG NHU CO LTD (CN)
ZHEJIANG NHU CO LTD (CN)
International Classes:
G01N31/16
Domestic Patent References:
WO2007006150A1 | 2007-01-18 |
Foreign References:
CN108226377A | 2018-06-29 | |||
CN103983737A | 2014-08-13 | |||
CN107188876A | 2017-09-22 | |||
CN107179341A | 2017-09-19 | |||
US3874991A | 1975-04-01 |
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