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Mass balance법에 의한 농약 표준물질의 순도 분석
김승환 ( Seung-hwan Kim ),김병주 ( Byungjoo Kim ),주광국 ( Kwangguk Joo ),지수언 ( Su-eon Ji ),정대원 ( Dae-won Chung ),이석기 ( Seok-ki Lee ) 한국환경분석학회 2021 환경분석과 독성보건 Vol.24 No.3
Imazamox,awidelyusedherbicide,iscurrentlymanagedbythePesticideMRLsandPositiveListSystemoftheMinistryofFoodandDrugSafety,andthedevelopmentofreliablestandardmaterialsforanalysisisurgentlyrequired.Toconfirmthereliabilityofthemassbalancemethod,wemeasuredthepurityoftheimazamoxreferencematerial(RM)certifiedbyanRMproduceraccreditedwithISOGuide34andestimatedmeasurementuncertainty.Accordingtothismethod,thecontentofstructurallysimilarorganicimpuritieswasmeasuredusinghigh-performanceliquidchromatographiccoupledwithultraviolet(HPLC-UV),andthemoisture,volatileimpurities,andnon-volatileimpuritieswerequantitativelyanalyzedusingathermogravimetricanalyzer(TGA).PurityandmeasurementuncertaintywerecalculatedbasedonanalysisoftheHPLC-UVandTGAresultsobtained,andthevalidityofthesevalueswasconfirmedbycomparingwiththevaluesprovidedintheRMcertificate.