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<br /> <br /> r <br />A C C i <br /> <br />Overall, h l1 readily apparent tnaf the den ohulned for cyanide on the thn• umprp hpm <br />lya(meter 43 do not remotely meet any t]A txherb end hence little endlblliry can be ptaeed <br />ehhar on the aPPare^t PnNnw oT cyanide N ma umpk a their euppoad deter:dan Mwla, <br />9.8 Abaenw o7 PGL tx MOL study <br />~.E.7 6tandeM protowla <br />k u normal whm dullnQ with Nmplu which haw maViau m undetaks • etutly wftlch <br />determine whet effect the ntatri:might hwa on the abillry of the method to detect end <br />quendfy the epeclea In gwttion. Such etudlu, procedure of vrhleh an mandaud end <br />ncopnlwd by roqulatory evthoritlu, an known a method dauctlan IlmlT (MDLI eva(uadona <br />or Drect(cnl quantltatlon Ilmlt IPDLt deUrminationa. <br />It I! normal Tor POL values m be 2 m more dme higher than nominal innrumenul dlnetlpn <br />11mh. For example, POL veluaa for many organic apache era eat by The U6EPA end 0,~1 <br />mp/L, which mlpM b. Z m 70 dmae Ne nontlnal deuctlon I(mlt by a pivm erolytlcel <br />protocol. The MDL likely }or tool cyanide In a oomPlax meirlx will be probably tour of more <br />tlmea the analytlcai dencdon Ilmlt <br />For trample, atudlaa by Smith and Mudder wbmlrcd to fret SUU of South Dafwu <br />su00aa[ad a PQL tar cyanloe to aqueous ample or at leaet p.02 mprL with no real cerulnty <br />of detection/quentlfication until twlu Shia valve. <br />It U apparent ghat PpL end MDL wluu era matrix eoeclt]c. Any time the umole matrlk <br />varies from an near Idel ep4lpw ealutlon, then It Is aenentlnl to determine epeClTlC Pt]Lt Or <br />MDLa to have any certainty as to the vallditY oT tM anely.ea for any cyanide aPCCiee in that <br />matrix. <br />?.8.2 Lveimetar U Semp4e <br />r:c oC: or 6t Cl r;; c'ca ~~. r;r c.n rc' u,t C` ~hr :.[ ^.r:[~ l3 u^'dc:. G:.a~, :'~. nr:.'. c' <br />;^.~Yd7~~~cat cl thcN [r. ^.[:r,. c[[:r Le: h [ec:+c-s ' 1,; [~: ? ? rp:.~c IP.[ .i <br />4, CC'rC_USIDttS <br />Eeeeo en tree C.Ui:e^. evnihaeie o! tP.• lycirt rear L: dCr ebava, v.c conclude That [he dr,r <br />el to e:e Invalid. W. }J'1nH COnd ~~. Snit h le nOt JCiEbir to ray wnether there It any <br />Cyanide In theca 6emplei !t d;. <br />