Enrichment of phenol from water using [c4mim]pf6‑tbp binary extractant

A PF6-TBP and extraction agent technology, applied in the field of enrichment of phenol, can solve the problems of complex sampling, high density, uneven dispersion, etc., and achieve the effect of simple sampling operation, maximized contact area, and improved enrichment effect
CN104897456BInactive Publication Date: 2017-07-04HEBEI UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HEBEI UNIV OF TECH
Publication Date
2017-07-04
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a method for enriching phenol in water by utilizing a [C4mim]PF6-TBP binary extractant, which comprises the steps of (1) placing a phenol solution into a centrifugal tube, adding a dispersion liquid and a binary extractant successively, uniformly mixing the above components, ultrasonically dispersing the obtained mixture at 0-50 DEG C for 3-25 minutes to form a highly dispersed and uniform micro-emulsion, wherein the binary extractant is composed of [C4mim]PF6 and TBP in the volume ratio of 1: 0.4 to 3.7 correspondingly; (2) after the ultrasonic treatment, centrifuging the micro-emulsion at a centrifugal speed of 7000- 10000 rpm for 1-16 minutes to obtain an aqueous precipitation ionic liquid, wherein phenol is enriched at the bottom of the centrifugal tube. The ionic liquid ionic liquid system is free from being limited by density and hydrophily / hydrophobicity, flexible, adjustable, and wide in range of application.
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Description

technical field

[0001] The present invention relates to a kind of utilizing ionic liquid [C 4 mim]PF 6 A method for enriching phenol from water with TBP binary extractant. Background technique

[0002] With the progress of society and the continuous improvement of the quality of life, environmental hygiene, food safety and other issues closely related to human health have been paid more and more attention. Therefore, the detection of environmental sanitation and food safety is very important. At present, in sample detection, common modern analysis methods, such as atomic absorption spectrometry, atomic fluorescence analysis, plasma emission spectrometry, etc., can quickly and accurately analyze and detect samples, and the accuracy of the above methods must be based on Sample pretreatment is the first and critical step.

[0003] At present, for micro or trace samples, common pretreatment methods include solid phase microextraction (SPME) and liquid phase microextraction (...

Claims

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