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单词 qualitative analysis
释义

Definition of qualitative analysis in English:

qualitative analysis

noun
mass nounChemistry
  • Identification of the constituents, e.g. elements or functional groups, present in a substance.

    Example sentencesExamples
    • If a chemist wishes to analyze a sample to find what elements or compounds are present, that is, to identify the elements and compounds present, she or he will choose a qualitative analysis method.
    • At its heart, good qualitative analysis relies on the skill, vision and integrity of the researcher doing that analysis, and as Dingwall et al have pointed out, this requires trained, and, crucially, experienced researchers.
    • A qualitative analysis identifies the components of a substance or mixture; quantitative analysis measures the amounts or proportions of the components in a reaction or substance.
    • Selective precipitation was the basis behind the qualitative analysis scheme that was used years ago to identify which ions were present in unknown aqueous solutions.
    • In addition, qualitative analysis of callus indicated that both strains stimulated cell proliferation in the cobiotic cultures.
    • These results indicate that the improved extraction method of RNA with benzyl chloride is useful for quantitative and qualitative analysis of RNA in plant tissues such as stiff leaves of rice.
    • These tests are basically a form of qualitative analysis, determining the individual molecules that are present.
    • Microchemical tests are a form of qualitative analysis used to identify the nature of a variety of materials including metals, pigments, proteins, plastics, and salts.
    • Thus, a single-pass DNA sequence derived from RNA is a reliable source for quantitative and qualitative analysis.
    • Moreover, even though quantitative analysis is less subjective than qualitative analysis, interpretation and bias are by no means eliminated.
    • One of the primary methods of qualitative analysis involves precipitation reactions.
    • We developed genome images to visualize microarray data in a way that would facilitate comprehensive qualitative analysis of one or a few experiments.
    • Despite being unable to perform a meta-analysis, qualitative analysis had to be performed rigorously to ensure a clear, comprehensive, and objective account of the primary studies was given.
    • In other trials, qualitative analysis of the ECG data alone or in combination with troponin T levels predicted treatment outcomes.
    • A quick, qualitative analysis of valves during SEM work confirmed the presence of pyrite and the calcium phosphate composition of the carapace.
    • Rod outer segment length and outer nuclear layer thickness measurements were used to assess light damage, along with qualitative analysis of swelling and disruption of the outer retinal layers.
    • On returning, though still an undergraduate, he tutored in qualitative analysis, at which he excelled; and also taught a course for students of home economics.
    • A mixed method approach was utilized in the study to provide triangulation and clarification of results: qualitative analysis and quantitative analysis.
    • In the chemical industry, coordination compounds are used in qualitative analysis to separate metal ions, and to identify unknown ions in solution.
    • This method is usable for qualitative analysis of reaction mechanisms mediated by the protein environment.
 
 

Definition of qualitative analysis in US English:

qualitative analysis

noun
Chemistry
  • Identification of the constituents, e.g. elements or functional groups, present in a substance.

    Example sentencesExamples
    • In addition, qualitative analysis of callus indicated that both strains stimulated cell proliferation in the cobiotic cultures.
    • Rod outer segment length and outer nuclear layer thickness measurements were used to assess light damage, along with qualitative analysis of swelling and disruption of the outer retinal layers.
    • Selective precipitation was the basis behind the qualitative analysis scheme that was used years ago to identify which ions were present in unknown aqueous solutions.
    • In the chemical industry, coordination compounds are used in qualitative analysis to separate metal ions, and to identify unknown ions in solution.
    • These results indicate that the improved extraction method of RNA with benzyl chloride is useful for quantitative and qualitative analysis of RNA in plant tissues such as stiff leaves of rice.
    • If a chemist wishes to analyze a sample to find what elements or compounds are present, that is, to identify the elements and compounds present, she or he will choose a qualitative analysis method.
    • Despite being unable to perform a meta-analysis, qualitative analysis had to be performed rigorously to ensure a clear, comprehensive, and objective account of the primary studies was given.
    • In other trials, qualitative analysis of the ECG data alone or in combination with troponin T levels predicted treatment outcomes.
    • A mixed method approach was utilized in the study to provide triangulation and clarification of results: qualitative analysis and quantitative analysis.
    • Thus, a single-pass DNA sequence derived from RNA is a reliable source for quantitative and qualitative analysis.
    • Microchemical tests are a form of qualitative analysis used to identify the nature of a variety of materials including metals, pigments, proteins, plastics, and salts.
    • This method is usable for qualitative analysis of reaction mechanisms mediated by the protein environment.
    • We developed genome images to visualize microarray data in a way that would facilitate comprehensive qualitative analysis of one or a few experiments.
    • One of the primary methods of qualitative analysis involves precipitation reactions.
    • These tests are basically a form of qualitative analysis, determining the individual molecules that are present.
    • A quick, qualitative analysis of valves during SEM work confirmed the presence of pyrite and the calcium phosphate composition of the carapace.
    • At its heart, good qualitative analysis relies on the skill, vision and integrity of the researcher doing that analysis, and as Dingwall et al have pointed out, this requires trained, and, crucially, experienced researchers.
    • Moreover, even though quantitative analysis is less subjective than qualitative analysis, interpretation and bias are by no means eliminated.
    • A qualitative analysis identifies the components of a substance or mixture; quantitative analysis measures the amounts or proportions of the components in a reaction or substance.
    • On returning, though still an undergraduate, he tutored in qualitative analysis, at which he excelled; and also taught a course for students of home economics.
 
 
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更新时间:2024/9/20 6:23:59