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x 3^ <br /> be <br /> s° <br /> J3,1 (}i?3K1 Me=r'!'--'sooncyI Ketone, (4-lie thyl-^2-pentanone) (Reagent grade) . <br /> MX 1300-1, E:4 Science, CbQe 7 ltill, New Jecsey. <br /> Y 3,: Iodine solut_on - weigh 3.0 grans of 12 . 2208, Bakers Chen Co. , <br /> phillipsburgh, New Jersey. <br /> Dissolve and dilute to 100 ml w+.th benzene. Stara in brown bottle. <br /> - 3.3 Aliquot 336 (Tri.-Capryl Methyl Ammonium Chloride) , available from <br /> McKesson Co., Minneapolis, Minnesota. j <br /> 10% V/V Aliquot 336/MIRK <br /> It V/V Aliquot 336/14IBK <br /> " I <br /> ,f 3.4 Xylene (Reagent grade) =045-3, )±' Science, Cherry Hili, New Jersey. <br /> 3.5 PbC12 - Lead Chloride, 2308 Bakers Chem Co., Phillipsburgh, IBJ. <br /> 1, Stock PbC12 solution i <br /> `N Dissolve 0.3356 grams .bC1 (previously dried at 10300 for 1 <br /> dilute 9 in HIDK <br /> os) iStore ini <br /> qu <br /> 2SOmibrown3bottle. Thislutsolution containsto <br /> 1000 ug/ml of Pb. <br /> I <br /> Z. Preparation o: Intermediate Pb Standard .I . <br /> Pipet 10 ml of the stack solution (1000ug/ml Pb) and dilute <br /> to 100 ml with xylene/MIBK solution (404 xylene) <br /> 3.6 Sodium sulfate (NA SO anhydrous, crystals:' <br /> I <br /> (4) Anr 3t�A <br /> r' <br /> g _ <br /> 9.1 Erlenmeyer flask with round glass stopQer, 250 nl <br /> 4.2 MaC hanical shaker. l <br /> 4.3 Filter funnel and paper (Whatman J40 ar equivalent) <br /> recorder or ir�tegrata:. <br /> 4,4 Flame Atonic Atsorption Spectrophotometer and <br /> 4,5 Land hallow cathode or electrodeless discharge lamp. <br /> i <br /> SWIM no <br /> I <br /> II <br /> k <br /> i <br />