Method for separation and enrichment of trace phthalates in pyridine ionic liquid two-phase system
A technology of dibutyl phthalate and aqueous two-phase system, which is applied in the preparation of test samples and other directions, can solve the problems of poor stability, difficulty in popularization, low sensitivity, etc., and achieves small relative standard deviation and high determination recovery rate. , the effect of a wide linear range
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0039] Take 39 g of [EPy]Br ionic liquid, place it in a 60 ml Erlenmeyer flask, add 10.89 g of C 4 o 6 h 4 KNa, add 2 ml dibutyl phthalate standard solution and 10 ml distilled water, mix well. At 25 °C and pH 5.0, vibrate and extract in a constant temperature oscillator for 2.5 h and then let it stand still. After the phase separation is clear, measure the concentration of residual dibutyl phthalate in the water phase, from the dibutyl phthalate in the water phase before and after extraction. The content of dibutyl formate calculates the extraction rate of dibutyl phthalate to be 94.67%.
Embodiment 2
[0041] Take 49 g of [EPy]Br ionic liquid, place it in a 60 ml Erlenmeyer flask, add 10.15 g of C 4 o 6 h 4 KNa, add 2 ml dibutyl phthalate standard solution and 10 ml distilled water, mix well. At 15 °C and pH 5.4, vibrate and extract in a constant temperature oscillator for 3 h and then let it stand still. After the phase separation is clear, measure the concentration of residual dibutyl phthalate in the water phase, from the dibutyl phthalate in the water phase before and after extraction. The content of dibutyl formate calculates the extraction rate of dibutyl phthalate to be 95.53%.
Embodiment 3
[0043] Take 39 g of [EPy]Br ionic liquid, place it in a 60 ml Erlenmeyer flask, add 7.96 g of C 4 o 6 h 4KNa, add 2 ml dibutyl phthalate standard solution and 10 ml distilled water, mix thoroughly. Under the conditions of 15 ℃ and pH 5.9, shake and extract in a constant temperature oscillator for 2.5 h and then let it stand still. After the phase separation is clear, the ionic liquid and the water phase are separated, and 39 g of [EPy]Br ionic liquid is added to the water phase , after repeating this three times, measure the concentration of residual dibutyl phthalate in the water phase, calculate the extraction rate of dibutyl phthalate from the content of dibutyl phthalate in the water phase before and after extraction to be 95.98 %.
PUM
Property | Measurement | Unit |
---|---|---|
extraction efficiency | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com