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윤선진 ( Seonjin Yoon ),정명상 ( Myeongsang Jeong ),송해종 ( Haejong Song ),나은경 ( Eunkyung Na ),김나영 ( Nayoung Kim ),김경아 ( Kyongah Kim ),권순복 ( Soonbok Kwon ),이인숙 ( Insook Lee ),김재식 ( Jaesik Kim ) 한국환경분석학회 2020 환경분석과 독성보건 Vol.23 No.4
ThepurposeofthisstudywastodocumentgroundwaterqualityinChungcheongnam-do.SamplesweretakenfromTaean,Dangjin,Seocheon,Boryeong,Seosan,andNonsanareas,and48waterqualityvariableswereanalyzedinrelationtoapplicablestandards,includingtheamountsofnaturallyoccurringradioactivematerials(UandRn).Theresultsfromtesting179locationsindicatedthat128weresuitableand51wereofunacceptablequality,intermsofdrinkingwaterqualitystandards.Thenonconformityratefornitratenitrogenwas47.0%,whilethatfortotalcoliformswas24.2%.Heavymetals-suchasPb,Hg,Cd,andCr-weredetectedinlowconcentrationsatallpoints.AnalysisofnaturallyoccurringradioactivematerialsshowedthatUconcentrationswerewithinthewaterqualitystandard(0.03mg/L)atallpoints.RnconcentrationswerelowinNW?ㅤregionssuchasTaean,Dangjin,Seocheon,andBoryeong,whereProterozoicsedimentaryrocksweredistributed,butitsconcentrationsintheSeosanandNonsanareas,wheregraniterockswerewidelydistributed,requiredcloserinvestigation,anditwasfoundthatthealternativemaximumcontaminantlevel(148Bq/L)wasexceededingranitesoilswhichoriginatedfromtheMesozoicEra.