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Kolthoff ACS Travel Award Recipients

calender iconJan 26, 2018
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KolthoffACSTravelAwardRecipients

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KatelynLambert(senior,chemistrymajor)andAyshaScarton(sophomore,forensicchemistrymajor,chemistrydoublemajor)wererecentlyofferedtheI.M.KolhoffawardforassistanceintraveltotheSpring2018NationalAmericanChemicalSocietyMeeting(NewOrleans,3/18-3/22).Inadditiontoafinancialaward,theiraccomplishmentswillberecognizedwithapresentationatthemeeting.

TheI.M.Kohthoffawardisgrantedto3undergraduatestudentspresentingaposterinanalyticalchemistry.Preferenceisgenerallygiventoundergraduatechemistrymajorswithstrongacademicrecords.KatelynandAyshawillbepresentingtheirposter(titleandabstractbelow)intheACSDivisionofAnalyticalChemistryPostersession,alongwithgraduatestudentsandpost-doctoralfellows.

Congratulationsonajobwelldone!

Determinationoflead(Pb),barium(Ba),andantimony(Sb)ingunshotresiduebythinfilmhydridegenerationmicrowaveplasmaatomicemissionspectroscopy(MP-AES)

Abstract:Themicrowaveplasmaatomicemissionspectroscopy(MP-AES)isarelativelynewanalyticaltechniquethathasonlyrecentlybecomecommerciallyavailablefromAgilentTechnologiesasthe4000seriesMP-AES.Forthiswork,anAgilent4200MP-AESwasusedtodeterminePb,Ba,andSbingunshotresidue.The4200MP-AESusesanitrogenplasmawithatemperatureof~5000Ktoproduceatomicemissionsfrom178-780nm.Gunshotresiduesampleswerecollectedusingcottonswabsmoistenedwith5%HNO3.Pb,Ba,andSbweresubsequentlyextractedwith1%HCl,priortoanalysis.ToimprovethesensitivityofSb,athinfilmhydridegeneratorwasutilizedinadditiontoaconventionalnebulizertosimultaneouslyintroducePbandBatotheplasmaasaerosols,andSbasSbH3 followingreductiontoSb3+ byL-CysteineandreactionwithNaBH4.Thinfilmhydridegenerationincreasedsensitivitybyafactorof>10xcomparedtoconventionalnebulization,allowingdetectionlimitsoflessthan1x10-6g,5×10-8g,and1x10-6gforPb,Ba,andSbrespectively,whichissufficienttoconfirmthepresenceofgunshotresideinsingleshottestsamples.

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KatelynLambert


AyshaScarton