TheModel420isaneasilyadaptableaccessoryforflameAAspectrophotometersthatallowsPPTdetectabilityforAs,Se,Sb,Sn,Te,Bi,andGeusingstandardhydridegenerationprocedures.UsinginertPolymercomponentsandareliablepumpingsystem,userscanquicklyswitchbetweenflameandhydride.Features:?AllowssuperiorDetectionlimitsforhydridemetalscomparedtographitefurnaceAAS,typicallyinthe100-500PPT.?Doesnotrequirehydrogengas.?EasyInstallationandremovalforchangingbacktoflameoperation.?FourorderofmagnitudedynamicrangeusingtheBuckmodel210/211systemforhighestaccuracyoverawiderangeofsampleconcentrationsminimizingdilutionsanderrors.?InertTubinggivesrapidequilibrationtimeallowingtypicalthroughputsof50samplesperhourwithreproducibilitiesofbetterthan2%atthe500PPTlevel ExamplefordetectionlimitsfortheBuckModel420HydrideSystemResultsBasedondatafromoptimizedmodel210VGP Wavelength 波長(zhǎng) Minimum. 最小量 TypicalRSDElement (ABS) D.L. at10PPBArsenic(As) 193.7nm 0.15PPB 1.5%Bismuth(Bi) 223.1nm 0.25PPB 2.1%Antimony(Sb) 206.8nm 0.20PPB 1.8%Selenium(Se) 196.0nm 0.35PPB 2.6%Tin(Sn) 286.3nm 1.0PPB 8.5%Tellurium(Te)214.3nm 0.30PPB 3.1%