CN101140217A - Powdery organic matter refractive index measuring method - Google Patents
Powdery organic matter refractive index measuring method Download PDFInfo
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- CN101140217A CN101140217A CNA200610015602XA CN200610015602A CN101140217A CN 101140217 A CN101140217 A CN 101140217A CN A200610015602X A CNA200610015602X A CN A200610015602XA CN 200610015602 A CN200610015602 A CN 200610015602A CN 101140217 A CN101140217 A CN 101140217A
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Abstract
The invention relates to a determining method for the refractive index of a powder organic substance, which has the following steps: 1) the powder organic substance to be measured is completely dissolved in solvent, the solution is divided into 3 to 10 groups according to the different weight percentage concentration, and the concentration range is 0.1 to less than 1 percent; 2) the refractive index of each group of solution is measured by an Abbe refractometer; 3) the weight percentage concentration of the solution is taken as the X axis, the refractive index of the solution is taken as the Y axis, the point is determined according to the numerical value of the refractive index measured under the solution of different concentration, and the linear regression graph is drawn according to all points; 4) the linear equation is determined with the linear regression graph; 5) the refractive index of the solution of 100 percent concentration is calculated by an extrapolation method, which is namely the refractive index of the powder organic substance. The invention has the advantages of gaining the refractive index of the powder organic substance through simple tests in a relatively short time, and further improving the accuracy of grading analysis result and the work efficiency through Mie theory.
Description
(1) technical field
The present invention relates to the assay method of a kind of assay method of material refractive index, particularly a kind of powdery organic matter refractive index.
(2) background technology
At present, the sreen analysis method of powdered substance mainly comprises: laser diffractometry, dynamic light scattering method, photon correlation spectroscopy method, sieve method, sedimentation and image analytical method etc.The principle and the purposes of these methods are had nothing in common with each other, but in actual research work, laser diffractometry is to use one of the most general method.Adopting the size-grade distribution of laser diffractometry analysed for powder shape material, is model with the Michaelis theory usually, and its advantage is to access results of grain size analysis more accurately.But the precondition of utilizing the Michaelis theory is to know the refractive index of sample.The refractive index of our the daily most of Powdered dead matter that touch can be found from some documents and materials, but for the detecting refractive index of powdery organic matter more complicated then, needs senior specialized equipment usually, and complicated operation, expense costliness.Under the ordinary laboratory condition, a kind of simple and feasible and the rapid method that accurately records powdery organic matter refractive index are not also arranged at present.
(3) summary of the invention
The objective of the invention is at above-mentioned the problems of the prior art, a kind of simple and feasible and the rapid assay method of powdery organic matter refractive index accurately are provided
Technical scheme of the present invention:
A kind of assay method of powdery organic matter refractive index, it is characterized in that operation steps is as follows: 1) be dissolved in powdery organic matter to be measured in the solvent fully, solution is divided into 3～10 groups by different weight percent concentration, and its weight percent concentration scope is 0.1～＜1%; 2) measure the refractive index of every group of solution respectively with the Abbe refractometer; 3) be X-axis, be Y-axis with the weight percent concentration of solution, determine a little according to the numerical value of the refractive index that records under each concentration solution, according to all point-rendering linear regression graphs with the refractive index of solution; 4) utilize linear regression graph to determine its linear equation; 5) calculating concentration by extrapolation method is 100% solution refractive index, is the refractive index of this powdery organic matter.
A kind of said determination method is characterized in that: the solvent of dissolved powders shape organic substance is deionized water, inorganic solvent or organic solvent.
A kind of said determination method is characterized in that: the inorganic solvent of dissolved powders shape organic substance is hydrochloric acid, oxalic acid, boric acid or carbonic acid.
A kind of said determination method is characterized in that: the organic solvent of dissolved powders shape organic substance is ethanol, acetone, methyl alcohol, acetonitrile, acetate, ethyl formate, ethyl acetate, chloroform or chlorobenzene.
A kind of said determination method is characterized in that: the weight percent concentration of solution is respectively 0.1%, 0.3%, 0.5%, 0.7% and 0.9%, is divided into 5 groups.
A kind of said determination method is characterized in that: the weight percent concentration of solution is respectively 0.1%, 0.2%, 0.3%, 0.4%, 0.5%, 0.6%, 0.7%, 0.8% and 0.9%, is divided into 9 groups.
Advantage of the present invention is: but by simple experiment, obtain the refractive index of powdery organic matter within a short period of time, and then utilize the Michaelis theory, improve the accuracy and the reliability of results of grain size analysis, and can increase work efficiency greatly.
(4) description of drawings
Fig. 1 is the linear regression graph that solvent is measured the refractive index of poloxamer 188 excipient substances with the deionized water.
Fig. 2 is the linear regression graph that solvent is measured polyvidone (Kollidon 90F) excipient substance refractive index with ethanol.
(5) embodiment
Embodiment 1: a kind of assay method of powdery organic matter refractive index of excipient substance of poloxamer 188 by name, and its operation steps is as follows: 1) this powdery organic matter is dissolved in respectively by 0.1%, 0.3%, 0.5%, 0.7% and 0.9% weight percent concentration and makes solution in the deionized water; 2) refractive index of measuring every group of solution respectively with the Abbe refractometer is followed successively by: 1.3300,1.3306,1.3310,1.3312 and 1.3316; 3) be X-axis, be Y-axis with the weight percent concentration of solution, as shown in Figure 1 according to above-mentioned institute value Plotted line regression figure with the refractive index of solution; 4) utilize linear regression graph to determine that its linear equation is: Y=1.33X+0.19; 5) by extrapolation method with X=1 substitution equation, calculating concentration and be 100% solution refractive index is 1.52, promptly the refractive index of this material is 1.52.This assay method simple and feasible, convenient and swift, measurement result are accurately and reliably.
Embodiment 2: measure the assay method of powdery organic matter refractive index of excipient substance of a kind of polyvidone by name of refractive index (Kollidon 90F) of the excipient substance of a kind of polyvidone by name (Kollidon 90F), its operation steps is as follows: 1) this powdery organic matter is dissolved in respectively by 0.1%, 0.2%, 0.3%, 0.4%, 0.5%, 0.6%, 0.7%, 0.8% and 0.9% weight percent concentration and makes solution in the ethanol; 2) refractive index of measuring every group of solution respectively with the Abbe refractometer is followed successively by: 1.3740,1.3760,1.3770,1.3780,1.3790,1.3810,1.3820,1.3840 and 1.3850; 3) be X-axis, be Y-axis with the weight percent concentration of solution, as shown in Figure 2 according to above-mentioned institute value Plotted line regression figure with the refractive index of solution; 4) utilize linear regression graph to determine that its linear equation is: Y=1.37X+1.35; 5) by extrapolation method with X=1 substitution equation, calculating concentration and be 100% solution refractive index is 2.72, promptly the refractive index of this material is 2.72.This assay method simple and feasible, convenient and swift, measurement result are accurately and reliably.
Claims (6)
1. the assay method of a powdery organic matter refractive index, it is characterized in that operation steps is as follows: 1) be dissolved in powdery organic matter to be measured in the solvent fully, solution is divided into 3～10 groups by different weight percent concentration, and its weight percent concentration scope is 0.1～＜1%; 2) measure the refractive index of every group of solution respectively with the Abbe refractometer; 3) be X-axis, be Y-axis with the weight percent concentration of solution, determine a little according to the numerical value of the refractive index that records under each concentration solution, according to all point-rendering linear regression graphs with the refractive index of solution; 4) utilize linear regression graph to determine its linear equation; 5) calculating concentration by extrapolation method is 100% solution refractive index, is the refractive index of this powdery organic matter.
2. the assay method of powdery organic matter refractive index according to claim 1, it is characterized in that: the solvent of dissolved powders shape organic substance is deionized water, inorganic solvent or organic solvent.
3. the assay method of powdery organic matter refractive index according to claim 2, it is characterized in that: the inorganic solvent of dissolved powders shape organic substance is hydrochloric acid, oxalic acid, boric acid or carbonic acid.
4. the assay method of powdery organic matter refractive index according to claim 2, it is characterized in that: the organic solvent of dissolved powders shape organic substance is ethanol, acetone, methyl alcohol, acetonitrile, acetate, ethyl formate, ethyl acetate, chloroform or chlorobenzene.
5. according to the assay method of claim 1 or the described powdery organic matter refractive index of claim 2, it is characterized in that: the weight percent concentration of solution is respectively 0.1%, 0.3%, 0.5%, 0.7% and 0.9%, is divided into 5 groups.
6. according to the assay method of claim 1 or the described powdery organic matter refractive index of claim 2, it is characterized in that: the weight percent concentration of solution is respectively 0.1%, 0.2%, 0.3%, 0.4%, 0.5%, 0.6%, 0.7%, 0.8% and 0.9%, is divided into 9 groups.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200610015602XA CN101140217A (en) | 2006-09-06 | 2006-09-06 | Powdery organic matter refractive index measuring method |
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| CNA200610015602XA CN101140217A (en) | 2006-09-06 | 2006-09-06 | Powdery organic matter refractive index measuring method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103063606A (en) * | 2012-12-31 | 2013-04-24 | 广西壮族自治区计量检测研究院 | Refractive index solution standard substance and preparation method thereof |
| CN109126528A (en) * | 2018-08-07 | 2019-01-04 | 浙江海洋大学 | Transparent native mixed liquor configuration device and method based on database technology |
| CN112179872A (en) * | 2020-10-22 | 2021-01-05 | 陕西延长中煤榆林能源化工有限公司 | Method for rapidly determining moisture content in MTO-grade methanol by using refraction method |
| CN116719295A (en) * | 2023-08-11 | 2023-09-08 | 江南载福粉末涂料（张家港）有限公司 | Production control method and system for powder coating |
-
2006
- 2006-09-06 CN CNA200610015602XA patent/CN101140217A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103063606A (en) * | 2012-12-31 | 2013-04-24 | 广西壮族自治区计量检测研究院 | Refractive index solution standard substance and preparation method thereof |
| CN103063606B (en) * | 2012-12-31 | 2015-07-08 | 广西壮族自治区计量检测研究院 | Refractive index solution standard substance and preparation method thereof |
| CN109126528A (en) * | 2018-08-07 | 2019-01-04 | 浙江海洋大学 | Transparent native mixed liquor configuration device and method based on database technology |
| CN109126528B (en) * | 2018-08-07 | 2021-04-06 | 浙江海洋大学 | Transparent soil mixed liquid configuration device and method based on database technology |
| CN112179872A (en) * | 2020-10-22 | 2021-01-05 | 陕西延长中煤榆林能源化工有限公司 | Method for rapidly determining moisture content in MTO-grade methanol by using refraction method |
| CN116719295A (en) * | 2023-08-11 | 2023-09-08 | 江南载福粉末涂料（张家港）有限公司 | Production control method and system for powder coating |
| CN116719295B (en) * | 2023-08-11 | 2023-10-27 | 江南载福粉末涂料（张家港）有限公司 | Production control method and system for powder coating |
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Open date: 20080312 |