Measuring method of C1 content in phenol-containing sample
A measurement method and sample technology, applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems of prolonging the analysis time, washing off difficult residues, affecting the service life of chromatographic columns, etc., achieving high accuracy and results Precise, reliable, and easy-to-operate results
Active Publication Date: 2012-05-02
BAOWU CHARCOAL MATERIAL TECH CO LTD
View PDF0 Cites 2 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0024] It is found through experiments that after burning, the excess phosphoric acid is in a molten state, and it is difficult to wash off the residue
[0025] Sulfate and phosphate ions all go out on the ion chromatogram, and because the alkalinity of sodium phenolate is strong (there is NaOH), so the amount of acid that needs to be added is also large, forming larger sulfate radicals on the spectrogram or phosphate ion chromatographic peaks, high levels of anions will prolong the analysis time and affect the baseline of the chromatogram and the service life of the chromatographic column
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0034] The technical solution of the present invention is further described below.
[0035] Cl in a phenolic sample - As for the determination method of content, if the phenol-containing sample is one of phenol, o-cresol and m-cresol, the method specifically includes the following steps.
[0036] a) Pretreatment of phenolic samples
[0037] Pretreatment of phenolic samples involves the following steps:
[0038] a 1 ) take 50mL phenol-containing sample, and evaporate the phenol-containing sample to dryness on an electric furnace;
[0039] a 2 ) will step a 1 ) and evaporated to dryness in a muffle furnace, the ashing temperature is 600°C ± 20°C, and the ashing time is 1 to 1.5 hours;
[0040] a 3 ) will step a 2 ) after washing and filtering the ashed phenol-containing sample in a 100mL volumetric flask.
[0041] b) Determination of Cl in the phenol-containing sample after step a) pretreatment by ion chromatography - Content
[0042] The instrument used in this speci...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to a measuring method of C1 content, particularly relates to a measuring method of C1 content in a phenol-containing sample, and more particularly relates to a measuring method of the C1 content in the phenol-containing sample by adopting ion chromatography. The measuring method of the C1 content in the phenol-containing sample is characterized by comprising the following steps of: (a) pretreating the phenol-containing sample by adopting an ash method or acid dissolving method; and (b) measuring the C1 content in the phenol-containing sample pretreated in the step (a) byadopting the ion chromatography. The measuring method of the C1 content in the phenol-containing sample, provided by the invention, is simple to operate and has accurate and reliable result.
Description
[0001] This application is a divisional application of patent application number 200910051247.5, filing date: May 14, 2009, invention name: Cl in phenolic samples - method for the determination of content. technical field [0002] The present invention relates to a Cl - Determination method of content, especially related to Cl in phenolic samples - The determination method of content, specifically relates to adopting ion chromatography to analyze Cl in phenolic sample - method for the determination of content. Background technique [0003] At present, it is only necessary to measure the free acid in the phenol-containing sample (the phenol-containing sample in the present invention refers to phenol, o-cresol, m-cresol, p-cresol, and phenolic sodium salt to be tested). The method for the chloride ion in the sample, there is also no determination of Cl in the assay procedure of intermediate phenol sodium salt (RPL). - requirements and methods. [0004] Cl in phenolic samp...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02G01N30/12
Inventor 陆东跃黄振宇黄漪虞建增韩仕兵
Owner BAOWU CHARCOAL MATERIAL TECH CO LTD