Title:
METHOD FOR DETERMINING MERCURY AND ARSENIC IN BRIQUETTES BASED ON ATOMIC FLUORESCENCE SPECTROMETRY AND DIGESTION OF BRIQUETTES USING HYDROTHERMAL SYNTHESIS REACTOR
Document Type and Number:
WIPO Patent Application WO/2023/197712
Kind Code:
A1
Abstract:
A method for determining mercury and arsenic in briquettes based on atomic fluorescence spectrometry and digestion of briquettes using a hydrothermal synthesis reactor, comprising: adding a certain amount of briquettes and a proper amount of mixed acid into a polytetrafluoroethylene sealed tank, which has been subjected to soaking, cleaning and preheating, for pre-digestion until a gas is released, after the reaction eases, capping, placing the polytetrafluoroethylene sealed tank into a stainless steel sleeve for sealing, placing the stainless steel sleeve into an electrothermal blast drying oven for closed heating digestion, and then performing acid removal and volume fixing operations to obtain a digestion solution to be tested; and preparing a standard series of solutions of mercury and arsenic elements, drawing a standard curve, then using an atomic fluorescence spectrometer to test the obtained digestion solution to be tested to obtain a fluorescence intensity, and performing conversion by means of the standard curve to obtain the content of corresponding elements in the briquettes.
Inventors:
CHEN JUAN (CN)
WU JIANJUN (CN)
LIU ZHE (CN)
YAN LONG (CN)
YAN TAO (CN)
ZHANG YIXIN (CN)
GUO ZHENKUN (CN)
GUO YANG (CN)
LI JIAN (CN)
WANG YUFEI (CN)
WU JIANJUN (CN)
LIU ZHE (CN)
YAN LONG (CN)
YAN TAO (CN)
ZHANG YIXIN (CN)
GUO ZHENKUN (CN)
GUO YANG (CN)
LI JIAN (CN)
WANG YUFEI (CN)
Application Number:
PCT/CN2023/071498
Publication Date:
October 19, 2023
Filing Date:
January 10, 2023
Export Citation:
Assignee:
UNIV CHINA MINING (CN)
UNIV YULIN (CN)
NAT COAL AND SALT CHEMICAL PRODUCT QUALITY SUPERVISION AND INSPECTION CENTER YULIN YULIN PRODUCT QUA (CN)
UNIV YULIN (CN)
NAT COAL AND SALT CHEMICAL PRODUCT QUALITY SUPERVISION AND INSPECTION CENTER YULIN YULIN PRODUCT QUA (CN)
International Classes:
G01N21/64; G01N1/44
Foreign References:
| CN114720445A | 2022-07-08 | |||
| CN110487758A | 2019-11-22 | |||
| CN103543055A | 2014-01-29 |
Other References:
XIANGPING LI, QI JIAN-YING, WANG CHUN-LIN, LIU JUAN1, WANG JIN, YANG CHUN-XIA, CHEN YONG-HENG: "Environmental Quality of Soil Polluted by Thallium and Lead in Pyrite Deposit Area of Western Guangdong Province", JOURNAL OF AGRO-ENVIRONMENT SCIENCE, vol. 28, no. 3, 30 March 2009 (2009-03-30), pages 496 - 501, XP093099056
Attorney, Agent or Firm:
BEIJING HENGLV INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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