Definition
QuantitativeAnattributereferstoanattributethatexistsintheformofaquantityandcanthereforebemeasured.Theresultofthemeasurementisexpressedbytheproductofaspecificquantity(calledaunit)andanumber.Takingphysicalquantitiesasanexample,distance,quality,andtimeareallquantitativeattributes.Manyattributesexaminedinsocialsciences,suchasability,personalitycharacteristics,etc.,arealsoregardedasquantitativeattributesforresearch.
Quantitativeanalysis
Theanalyticalmethodthatneedstodeterminetherelativecontentofeachcomponentinasubstance(compound)isquantitativeanalysis.
Generally,itisnecessarytoperformqualitativeanalysisfirsttodeterminethematerialcomposition,andthenselecttheappropriateanalysismethodforquantitativeanalysis,becausetherearedifferenteffectiveanalysismethodsfordifferentcomponentelementsorions.Whetheritcontainsinterferingionsorelementsisalsoafactortobeconsideredwhenchoosingananalysismethod.Sincequantitativeanalysiscandeterminethecontentofcomponents,ithasverygreatpracticalapplicationsignificance.
Qualitativeanalysis
Themaintaskofqualitativeanalysisistodeterminethecompositionofthesubstance(compound).Onlyafterthecompositionofthesubstanceisdetermined,cantheappropriateanalysisbeselectedThemethodperformsquantitativeanalysis.Ifitisonlytodetecttheexistenceofacertainionorelement,itisaseparateanalysis;ifaseriesofreactionsarerequiredtoremoveotherinterferingionsorelementsoritisrequiredtoknowwhichotherionsorelementsexist,itisasystematicanalysis.
Qualitativeanalysisincludeschromatography.
Accordingtothetypeofsubstance,qualitativeanalysisisdividedintoqualitativeinorganicanalysisandqualitativeorganicanalysis.
See
Quantitativeanalysis
Qualitativeandqualitativeanalysis