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Gdańsk University of Technology

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Multivariate statistical comparison of analytical procedures for benzene and phenol determination with respect to their environmental impact

The studydescribesthepossibilityofapplicationofself-organizingmapstechniquetoassessthe greenness ofanalyticalmethodologies.Themetrologicaland “environmentalimpact” parametersof proceduresforbenzeneandphenoldeterminationinwatersamplesweresetsofinputdatafor chemometric analysis.Totally47objectsand8variablesformedthedatausedforanalysis.Themajor factors responsiblefornon-greencharacterofthemethodologyaretheamountoforganicsolventand amount ofsolidwastesformed.TheresultsoftheassessmentmethodswithNEMIsymbolsandEco-scale are ingoodagreement.Greenerproceduresforbenzeneandphenoldeterminationarethosebasedon SPME. IncaseofphenolthemethodologiesbasedonGCseparationaremuchgreenerthanthosebased on LC.Theresultsalsoshowthatitiseasiertoapplygreenmethodologiesforbenzene,asacompound with lowerpolarityandhencewithlessaffinity to,thanforphenol.TheSOMassessmentmethodology can beusefulinchoosingtheproperanalyticalprocedures.

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