Synonym: purgation, refinement, refining. Similar words: clarification, esterification, ratification, gratification, specification, justification, certification, qualification. Meaning: [‚pjʊrɪfɪ'keɪʃn /‚pjʊə-] 
n. 1. the act of cleaning by getting rid of impurities 2. the process of removing impurities (as from oil or metals or sugar etc.) 3. a ceremonial cleansing from defilement or uncleanness by the performance of appropriate rites 4. the act of purging of sin or guilt; moral or spiritual cleansing.
n. 1. the act of cleaning by getting rid of impurities 2. the process of removing impurities (as from oil or metals or sugar etc.) 3. a ceremonial cleansing from defilement or uncleanness by the performance of appropriate rites 4. the act of purging of sin or guilt; moral or spiritual cleansing. 
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31. A relatively considerable amount of dissociation and purification of the mucor racemosus crude extract are conducted using silica-gel column.
32. The second method achieves only 60% purification from raw sample, but when combined with the first, the result is 100% purity because no shared contaminants co-elute with the product.
33. The source and damage of manganiferous wastewater were introduced. The control technology, sewage purification means and water resources protection were discussed.
34. Objective:To study the separation and purification technology of secoiridoid glycosides and xanthones from Swertia mussotii Franch.
35. A tremendous amount of work has been done on the purification of the starting material.
36. And more attention should be paid to the integration of the aqueous alkanolamine solution process and the membrane separation process for natural gas purification.
37. Brine purification is an important stage in the co-production of salt and Galubers ? ? salt.
38. The method was established for purification of diflubenzuron by crystal technique with mixed solvents.
39. The air purifier has following merits: small volume, low cost, high purification efficiency and removing multi - contaminations.
40. Low and middle grade diatomite purification is of great importance in its industrial use development.
41. Preparative high - speed counter-current chromatography ( HSCCC ) was used the isolation and purification of solanesol from potato leaves.
42. Conclusion: The improved methods of manual purification, cool digestion and dermal scratching may increase the human keratinocyte livability and growth speed.
43. In this article the methods for purification and assay for pectic enzymes were reviewed with 28 references.
44. The extraction, isolation and purification of alkali-soluble polysaccharide from leaf mustard were studied.
45. METHODS The content of phillyrin in forsythia was determinated by using Soxhlet extractor with methanol, separation and purification with the neutral aluminum oxide column and HPLC method.
46. The invention is suitable for large-scale production and can be widely used for separation and purification of polysaccharide and glycoprotein of all kinds of pteridophyte.
47. The structure of pastilles was more compact and the pastille purification rate was slower at lower solidification temperature, however the yield of pastilles was higher.
48. The process of chlorine leaching - purification - electrowinning for nickel extractioncopper residue is investigated.
49. A single step chromatographic method for purification of - phycocyanin - PC was set up in this paper.
50. The framework of tree arrows takes inspiration from the Chinese folding fan. These trees are neatly arranged in the north-south direction, which is conducive to air convection and purification.
51. Objective: To accelerate the process of mice and rats of caesarean birth purification.
52. Aquatic plant is an important element of the waterscape, and it plays important roles in the landscaping and water purification.
53. OBJECTIVE:To optimize the conditions for the extraction and purification of the active components of Epimedium Herb and Drynaria in Gugu sustained-release capsules.
54. The purification ability of Elodea Canadensis Michx is higher than those of Potamogeton Crispus Linn and Ceratophyllum Demersum Linn.
55. It describes the test and operation of sulfate solution purification by antimony trioxide instead of arsenate.
56. The results showed that good purification effects can be obtained,(http://sentencedict.com/purification.html) in which not only major coarse impurity particles was removed but also shrinkage porosity was effectively abated.
57. Constructed wetland system is an efficient biotechnique for wastewater purification with low investment, imbecility , low circulation fee and high eco-value.
58. Purification process of propane distillate oil, the bottom product of propylene rectifying column in the Ethylene Works of PetroChina Liaoyang Petrochemical Company, is introduced.
59. In addition to water, have purification tablets such as Halazone and Globaline, but be sure to read the label on the bottle before using the tablets.
60. Objective : To study the extraction and purification process of total anthraquinone in Rheum.
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