Title:
METHOD FOR INCREASING DETECTION SPEED OF POLYCYCLIC AROMATIC HYDROCARBONS IN HIGH-WATER CONTENT SOIL SAMPLE
Document Type and Number:
WIPO Patent Application WO/2023/035291
Kind Code:
A1
Abstract:
Disclosed is a method for increasing the detection speed of polycyclic aromatic hydrocarbons in a high-water content soil sample, comprising: pre-processing a soil sample; uniformly mixing the soil sample with diatomite, adding a substituent and an extractant for extraction treatment, to obtain a sample extract solution; performing dehydration processing on the sample extract solution; performing a secondary dehydration process and a purification process on the dehydrated sample extract; concentrating the sample extracting solution to obtain a sample solution to be tested which contains polycyclic aromatic hydrocarbons; and adding an internal marker to the sample solution to be tested, and detecting polycyclic aromatic hydrocarbon content. The method can measure a soil sample having a water content of greater than 15% without freeze-drying for 24 hours, which saves energy and improves detection speed. By means of using physical and chemical water removal methods, the use of anhydrous sodium sulfate is reduced, anhydrous sodium sulfate is prevented from being penetrated and hardened by a water phase, the elution pressure of a polycyclic aromatic hydrocarbon is reduced, and the pass rate and detection speed of polycyclic aromatic hydrocarbons in soil samples are increased.
Inventors:
CHENG TINGTING (CN)
LIU PENG (CN)
SUN HUILING (CN)
LIU QING (CN)
SU RIYAN (CN)
CHEN ZHAOJING (CN)
XUE JIE (CN)
GAO GUANJUN (CN)
MA FANG (CN)
XU ZHIYAN (CN)
ZHANG LIWEI (CN)
GAO XIN (CN)
LIU PENG (CN)
SUN HUILING (CN)
LIU QING (CN)
SU RIYAN (CN)
CHEN ZHAOJING (CN)
XUE JIE (CN)
GAO GUANJUN (CN)
MA FANG (CN)
XU ZHIYAN (CN)
ZHANG LIWEI (CN)
GAO XIN (CN)
Application Number:
PCT/CN2021/118388
Publication Date:
March 16, 2023
Filing Date:
September 15, 2021
Export Citation:
Assignee:
SHANDONG ACADEMY OF ENV SCIENCES CO LTD (CN)
SHANDONG ACADEMY OF ENV SCIENCES ENV TESTING CO LTD (CN)
SHANDONG ACADEMY OF ENV SCIENCES ENV TESTING CO LTD (CN)
International Classes:
G01N1/28
Domestic Patent References:
| WO2004102181A2 | 2004-11-25 |
Foreign References:
| CN108982707A | 2018-12-11 | |||
| CN105974034A | 2016-09-28 | |||
| CN112444513A | 2021-03-05 | |||
| CN102062762A | 2011-05-18 | |||
| CN101458236A | 2009-06-17 |
Attorney, Agent or Firm:
BEIJING IPLING INTELLECTUAL PROPERTY LAW FIRM (CN)
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