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IEEE <br /> REPOR'i': r); tittititins attci '3'�:rtits ' <br /> lac ar,liitc nt .1 ntc,curie:t7 ticae^llinl: the .clnccnuattan int an:ursiytc. <br /> :cc! ,l:m fll%rc^raci�: ii)iiity�7r .1 pracc;ttire cicltlartstr:stca by the aUrccn:eilt rertieen <br /> maty ti4�.(7l fSol 11L'(1 i7n I:tIICr{;1IS7Ilcalc5 of the ti:l1r1L'tialllplC Or a P"111'of <br /> sillpl!Calt' "I'IKI.'S <br /> i?:IlC1S L'Call13 i)I satllpieS atlaly7.eti SCt1tiL'ntlaily litiln'2 IIiC Sa[i1L'C:]ilbratlUn L'llrti'C. <br /> reagents.:And instrument <br /> !_ibnra:.7ry Laboratory reat*ant water"piked,with known compounds:inti subiected to the <br /> [:ut:trni Standard carne procedures as the sampies. The LCS thus indicates the accuracy of the <br /> ;_CS) analvilcat lrletnt7d and.because a is prepared from a different source than the <br /> standard used to calibrate I,,,.instrument. it also scrycs to double-check the <br /> calibration <br /> tit:urtx GIC ()uality cr.nsrnl tests perinmsc0 all, ai client sasnpics. l-c:r most illart?anic <br /> :rnalvscs.the, iaboratory uses a p:ur a[tllipiicate sari satrinte. <br /> flies anti a sptked <br /> For most organic analyses.the laboratory uses a pair of spiked sampies <br /> (duplicalc spikes) <br /> LC Result Laboratory result of an LCS analysis <br /> LT Result Expected resuit,or true value.of the LCS analysis <br /> uots <br /> is <br /> R I. R2 Result: First analysis of thcse <br /> samplplicate and R21i s corresponding dupiic t used totng the <br /> determine precision <br /> S I. SZ Result spike of the sample f the andrS2P he seclicate ond spikiked e;usedwith <br /> to determine pyre cisone <br /> ion and <br /> accuracy <br /> R Sar Resuit The average of replicate analysis results <br /> S Bar Result: The average of spike analysis results <br /> True value The theoretical,or expected.result of a spike sample analysis <br /> Percent The percentage of analyte recovered. <br /> Recovery For LCS,the percent recovery calculation is: LC y LT x 100 <br /> For spike recoveries.the percent recovery calculatiian is: <br /> rc Bar- 5�mtrle('onctntradon x 100 <br /> Spike Amount <br /> Relative Percent Calculated using one of the following: S7 x i0. <br /> Difference(RPD) I - R2 x 1 (S1" ) o <br /> (RI + R2) 2 <br /> --- ch is reagent w <br /> Blank Resultvselusof <br /> nthche same re: s,instruments and procedures asethe samples ------- <br /> The -- <br /> in a batch:used to determine laboratory contamination <br /> Reporting Qctec. BCA-assigned limit based on--but not[he <br /> same as�method detection limits <br /> lion Limit(RDL) (MDLs)detetmined using E guidelines <br /> es <br />