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Patent Searching and Data


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)
Application Number:
PCT/CN2018/093972
Publication Date:
July 11, 2019
Filing Date:
July 02, 2018
Export Citation:
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Assignee:
ZHEJIANG NHU SPECIAL MAT CO LTD (CN)
ZHEJIANG NHU CO LTD (CN)
International Classes:
G01N31/16
Domestic Patent References:
WO2007006150A12007-01-18
Foreign References:
CN108226377A2018-06-29
CN103983737A2014-08-13
CN107188876A2017-09-22
CN107179341A2017-09-19
US3874991A1975-04-01
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