Document ymnxmrz37JJJ52GJ7a3Q03DJd

f ' I | ] j ' uil ^ fSTO ^ r1 ;n fUtiiN;,As MAY 3 197^ ANALYTICAL RESEARCH DEPARTMENT REPORT AW S139 SobJect Elemental Analysis of Various Paints for Pb, Sb, la, Hit, Cd, As end Se Contents OM-101 ___ Manufacturer S-tf Co, Customer Department Analytical Research Requested by R. W. Scott Date Completed 4-2S-72 ABSTRACT Hinety-^qht Shervin-Williame paints hare been analysed by the Analytical Research Department and sereral outside testin* laboratories for ?b Sb, Ba, Hip, Cd, As and S contents* The work vu performed la order to comply irith an PDA request to provide this information la conjunction with pending lerlalaticn to limit the ouantltlas of these elenents allowable lit pelnts. i I ji Analyst Jtichard W. Scott, Director i Vicki A* McMahon/ac Analytical Research Department Shsrtrln-Wllllaas Research Canter cc - RES JCW REB G8 FCC CCS BW JJL JDK JAP IMF JAL )* N 3941 s-w 00T59I i,1.  4 COHPaKT COSfXDSNTJAL PURPOCT Ninety-eight Shervln-Wiliiiaw paints were selected for analysis to determine the quantities of ?b, SS, Ba (total and vatar soluble), Hg, Cd, A* and Se present in typical dried paint film*. The first group of tma paint* vac to be analyzed by the Analytical Aeseareh Department and two outside laboratories for all seven elements* the Chicago Board of Health vas to analyse five of the paints for Th only* The second group of ninety-one paints vas to be anaIvxed for Pb, Sb and Ba in this department and for Hg, Cd, As and Se bv an outside laboratory. The data vere required in order to meet an PDA demand for this Information in conjunction vith sending legislation to regulate the quantities of toxic or heavy elements allowable in paints used in, on and near residential structures. The deadline for reporting this information was Anril 8, 1977. RgSOLTS Seven paint samples were analysed bv this laboratory, the Chicago Board of Health, Arro Laboratory fJoliet, Illinois) and Analytical Consulting Services, Ine. Ofr. Bogomil Koeciessal. Tha results, which are averages of duplicate determinations, follow^ 'N.D.* mean* not detected. Sample Percent Lead in Paint Solids Analytical Board of Anaiy. Coos. Research Health Ser. Inc. Arro Lab. #325 - X7 G 33 #326 - K3 G 33 #327 - A3 V 16 #328 - Lswe Brothers Spray, Holland Tallow 974 #329 - A6 T 61 #330 - A-100 White #331 - A2 W 4 0.003 0.010 0.20 0.43 0.003 0.003 0.17 0.003 0.01 Not Sent 0.35 0.006 0.002 Wot Sent 0.028 0.017 0.238 0.474 H.D. H.It. Wet Sent 0.004 o.on 0.26 Wot Sent 0.003 0.004 0.16 Sample #323 #326 #327 #328 #329 #330 #331 Percent Antimony in Paint Solids Analytical Research Anaiy. Cons. Ser. Inc. 0.003 W.D. W.D. N.D. 0.001 0.001 0.001 0.0066 0.0046 0.0030 0.0047 0.0107 0.0026 Wot Sent Arro Lab. 0.003 0.004 0.003 Wot Sent 0.741 0.012 H.T). 1 MTT. S-W 003592 company confidential ALP-8139 2- - Sarple Percent Barites In Paint Solids Analytical Research Arm Lab. #325 j #326 #32? #328 #329 #330 #331 0.003 0.0003 0.0003 0.0003 0.0003 0.002 0.011 H.D. 0.053 0.026 Not Sent H.L. N.n. 0.065 Baritsi determination was net reqoestad free Analytical Consulting Service Inc. Sifile Percent Memory In Paint Solids Analytical Research AnaIt. Cons. Ser. Inc. Arro Lab. 1 #325 #326 0.007 0.004 !<i!Jl #327 #328 #329 0.004 0*004 0.004 #330 0.003 #331 0.005 N.L. 0.071 N.L. N.T>. N.L. K.D. Not Sent 0.000002 N.L. N.T>. Not Rent 0.000002 N.I>. N.L. Sarnie Percent Cadmitm In Paint Solids Analytical Sesearcb Analy. Cons. Ser. Inc. Arro Lab. #325 #326 #327 #328 #329 #330 #331 --P1* V.fi. 0.000 0.00003 0.0009 0.00006 0.0010 0.0002 0.0033 0.003 0.0048 0.003 0.0067 0.0004 Not Sent Pareast Arsenic in Paint Solida Analytical Research Analy. Cons. Ser. Inc. 0.0001 0.0005 0.0004 Not Sent 0.003 0.003 0.0006 Arro Labo 1 #325 0.001 #326 0.007 #327 0.012 #328 H.D. #329 N.N. #330 N.D. #331 W.D. N.N. N.D. N.N. W.D. 0.0011 N.D. Wot Seat 0.092 0.028 0.034 Not Sent W.D. W.D. 0.023 Tzrrwsm S-W 003593 COMPANT CXWFirtENTlAL AMP-8139 -3- Sample Perceot Selenium in Paint Solids Analytical Peaeareh Analv. Cras. Ser. Inc. Arro Lab #323 #326 #327 #328 #329 #330 #331 H.D. 0.002 0.003 H.D. 0.002 0.001 0.003 H.D. H.D. H.D. N.D. H.n. H.D. Hot Sent 0.033 0.032 0.044 Hot Sent 0.044 0.036 0.020 #331 was not sent to Analytical Consulting Service, Inc, or the Board of Health because the dry paint flln could not be adequately removed free the glass plate substrate on which It was dried for proper sampling. #328 was not sent to Arro Lab. because the spray paint could not be accurately sampled as a liquid In the procedure that Arro was using. #327 was also omitted from the Board of Health ampleg. Comparison of the results between labs generally indicates good agreement. Analytical Research, the Board of Health end Analytical Consulting Services. Inc. ell used essentially the sane procedure for the lead determination. Arro Lab. used a different procedure for Pb end the other elements which night give somewhat high results. See Methods section for details on procedures used. Hinety-one paints were analyzed for Pb. Sb and Ba In this labor atory and for Hg. Cd, As and Se by the Posner-Hixson Laboratory in Chicago. In the following results, 'N.P.* means not detected. The procedures used and the expected detection limits are described in the Methods section. Three formulas were known to contain Sb. and two results are reported for these; the first represents the total Sb. the second the acid-soluble Sb. Attempts to determine total Be In two samples ware msuecessful; the Be results reported represent add-soluble Be. Ko. Vonnli fercant of Paint Solids (Average of Duplicate Deterelnatlopa) Pb 8b Ba ^Cd As ^Se p.oos r-v. ''t. If * 0.003 0.003 ,v,,.0.004 /;*-*? t. 2#(J0. .-O' 0.001 o.on If .0. ,W.D. ^.OOOfe^H.TV; --' "-f\ho-o1 o>-s.s4V, H.D. H.D. H.D. H.D. H.D. H.D. 4>- _ H.I). 0.0004 H.I). 0.0013 H.I). H.D. 0.0033 0.0014 H.7>. H.I). H.I). 0.0031 H.D. H.D. S-W 003594 conncompaky bential ADP-8139 Ho. Fomla Percent of Paint Solids (Awsac of Doplleata Pstarainstlons) Pb sb Bt & c3" As S 8 A2 G 103 0.31 0.002 0.002 H.T). H.T). 9 A2 H 70 1.85 W.D. 0.003 W.D. H.T). 10 A2 W 5 0.35 0.008 0.002 !f.D. H.T). 11 A2 V 8 0.14 0.003 0.002 H.T). H.T). 12 A2 T 52 0.88 0.001 0.0004 0.00008 H.T). 13 A2 Y 60 0.008 1.12 0.006 0.00008 H.T). H.D. 14 A3 V 16 0.25 0.005 0.0003 H.T). H.T). 15 A5 Y 2 0.010 0.007 X.D. H.T). H.T). 16 A5 Y 23 H.T). H.J>. H.O. X.D. H.T). 17 A6 y 96 0.003 H.O. H.T). H.T). 0.0037 18 A6 Y 61 0.005 1.23 0.0003 H.T). 0.004 0.0038 19 All X 15 0.73 0.007 0.007 H.D. H.D. 20 All X 47 0.64 0.006 5.002 H.D. H.D. 21 A14 X 59 0.87 :.V H.D. 0,004 H.D. si:"' 22 A14 W 24 2.M -yv 0.001 H.I>. 23 A14 H 34 4^_^"' 0. h.d. ; 6.001 H.D. H.D. H.D. H.D. 24 A14 Y 25 0.004 0.047 H.D. H.D. 25 A14 Y 35 ^ 0.32 0.002 "" h,iC;' v H.D. H.D. `VX 26 rAi7 ^ ;;o;cm-Miij^^i0.oo*:^iir.o.>^ W.D. 27 A22 T.7O^^p^.(m^;0.OO3^^*0<;^f^f :'1i.d. 28 AM H 2 ^^00^^0.002:^0.00^-:^^ <U00014 xj). 29 A24 0,2 :0.005 ^ 0.008 H.O. &&i *>*# x.o. 30 A24 H 0.002 ; H.B. H.D. h.d. x.o. 31 A25 0. 2 ^^0.002^0^)03 0.006 H.D. J).' 32 A23 - ..!*. <is,*;*> 35Sf?;o.on : 0.00013 ' s:' < - . ' H.T). 33 1*1 A tin iV 009 X.D. - H.D. - W-:;. >- X.D. 34 8 . tv ./-`TV y -- o .r-y.-x rs- H.I>. 35 H.D. 36 A33 A 35 V-* 0.20 Z&i Z, .'Hi ' *13$ HJ). - Vw '^SST; 0.0005 H.D. H.T). 0.0002 0.0005 0.0013 0.0016 H.D. H.D. H.D. H.D. H.D. H.D. 0.0005 H.T). H.T). H.T). H.D. 0.0023 H.D. H.D. H.D. 0.0007 0.0004 H.T). H.D. H.D. 0.0033 H.D. tf.D. H.D. H.D. 0.0006 0.0003 0.0004 0.0004 H.D. H.D. H.D. H.D. H.D. 0.0054 H.D. H.D. 0.0046 0.0071 H.D. H.D. H.D. 0.0028 H.D. H.D. H.D. H.D. H.D. H.D. H.qDp. r^lo.0H0.D0.3.,.;^ x.o S-W 003595 COMPAWT CONPIDEWT ADP-8139 -3- Wo. Formula Percent of Paint Solids (Arerare of Donllcate Determination*) Fb Sb Ba SL Cd As 8* 37 A35 P 3 0.023 W.D. W.D. W.D. W.D. o.oou W.D. 38 ASS W 55 0.004 W.D. W.D. W.D. W.D. W.D. W.D. 39 A35 H 56 0.001 W.D. W.D. W.D. W.D. W.D. W.D. 40 A35 8 11 0.003 W.D. 0.0006 0.0007 W.D. W.D. 0.0221 41 A35 V 34 0.001 W.D. W.D. 0.0006 W.D. W.D. W.D. 42 A35 W 66 0.061 0.007 0.001 W.D. W.D. 0.0004 W.D. 43 A36 V 80 0.013 0.002 W.D. W.D. W.D. W.D. W.D. 44 A37 V 64 0.013 0.003 W.D. W.D. W.D. W.D. W.D. 45 A37 T 28 0.012 W.D. 0.005 W.D. W.D. 0.0003 W.D. 46 A38 H 25 0.14 0.002 0,002 W.D. W.D. W.D. 0.0014 47 A44 W 22 0.001 0.003 0.004 W.D. W.D. W.D. 0.0029 48 A45 W 81 0.017 ' 0.005 0.003 W.D. W.D. 0.0002 0.0031 49 A46 G 113 0.63 W.D. 0.005 W.D. W.D. W.D. 0.0060 50 AS3 W 14 0.010 0.006 0.003 W.D. WJ). W.D. 0.0322 51 A33 W 21 0.012 0.006 0.003 W.D. W.D. 0.0004 W.D. 52 A53 W 53 0.004 0.006 0.003 W.D. W.D. W.D. 0.0021 53 A54 W 7 0.001 W.D. W.D. 0.0002 W.D. 0.0003 0.0030 54 A54 T 9 0.002 W.D. 0.001 0.00014 WJ). W.D. 0.0026 55 A55 T 4 0.45 0.003 0.0002 W.D. W.D. W.D. W.D. 56 A57 A 15 0.30 0.004 0.013 W.D. 0.0O16 W.D. W.D. 57 A61 P 19 0.002 W.D. 0.001 W.D. W.D. W.D. W.D. 58 A64 S 8 0.005 0.003 0.0003 W.D. W.D. W.D. W.D. 59 A66 5 0.43 W.D. 0.502 W.D. W.D. W.D. W.D. 60 A86 W 31 0.002 0.007 0.008 W.D. W.D. 0.0017 W.D. 61 B42 W 100 0.002 0.004 0.43 0.0001 W.D. W.D. W.D. 62 C20 W 1 0.005 W.D. 0.0003 W.D. W.D. W.D. W.D. 63 X60 W 2 0.059 0.004 C.002 W.D. W.D. W.D. W.D. 64 P65 W 1 0.48 W.D. 0.0002 W.D. W.D. W.D. 0.0036 65 K3 ff 91 0.012 W.D. 0.0007 0.0001 W.D. 0.0007 W.D. 66 *3 W 97 0.015 0.003 0.001 W.D. W.D. W.D. W.D. S-W 003596 COMPART COWrmaffTAL ADP-8139 ka Wo. Varanla Percent at Paint Solids (Average at Duplicate Determinations) Pb Sb Be 2& Cd As Se 67 *3 T 66 0.011 0.001 0.0004 W.D. W.D. 0.0002 W.D. 68 W3 T 68 0.017 0.003 0.001 W.D. W.D. 0.0003 0.0017 69 X4 V 95 0.014 0.002 0.003 W.D. W.D. W.D. W.D, 70 XA T 66 0.017 0.001 W.D. W.D. W.D. 0.0009 0.0017 71 13 W 91 0.001 W.D. W.D. W.D. W.D. 0.0002 W.D. 72 W3 W 97 0.001 0.006 W.D. W.D. W.D. 0.0005 W.D. 73 *3 T 66 0,001 WJ>. W.D. W.D. W.D. 0.0006 W.D. 74 *7 R 44 0.003 0.006 0.004 W.D. W.D. W.D. W.D. 73 K7 W 93 0.003 0.003 0.001 W.D. W.D. 0.0003 W.D. 76 K10 T 63 0.003 0.003 0.086 W.D. W.D. W.D. W.D. 77 HV2 0.001 W.D. 0.001 0.0017 W.D. 0.0002 0.0023 78 *67 R 21 0.43 w.d. 0.002 W.D. W.D. 0.0021 0.0186 79 167 W 12 0.041 W.I). 0.008 W.D. W.D. 0.0029 W.D. 80 E67 W 14 0.33 w.d. W.D. 0.0004 W.D. W.D. W.D. 81 167 W 32 0.14 W.D. 0.0001 W.D. W.D. 0.0019 W.D. 82 W67 T 4 0.37 W.D. 0.009 0.0007 W.D. 0.0016 0.0166 83 167 T 17 0.003 W.D. 0.0004 0.0002 W.D, 0.0009 W.D. 84 167 T 33 0.32 W.D. 0.007 0.0002 W.D. 0.0036 W.D. 83 W83 G 7 0.24 0.003 0.006 W.D. W.D. W.D. 0.0019 86 H90 8 5 0.005 0.006 0.0003 W.D. W.D. ,W.D. 0.0045 87 W90 8 7 0.002 0.007 0.001 0.00013 W.D. W.D. 0.0019 88 *91 B 2 0.63 W.D. 0.0003 W.D. W.D. 0.0002 0.0012 89 W93 C 2 W.D. 0.006 0.001 W.D. W.D. 0.0007 W.D. 90 T60 P 10 0.011 0.002 W.D. W.D. W.D. 0.0013 W.D. 91 T70 R 12 W.I). 0.002 0.002 W.D. W.D. W.D. W.D. All the above data vaa reported to the PDA on 4-7-72 irith the exception of #22 (A14 W 24) and #24 (A14 T 23); theae formulas ara currently being revised to eliminate the lead drier. S-W 003597 ccwPAirr oomnogHTiAL AUP-8139 -7- MHIWOUS The procedures QNd by each laboratory ar briefly described along with eba dateetion Halts or lowest quantities detected. Analytical Research Department 1. Slansnts sought! All ssven elements on original group of 7 samples; fb, 8b snd la on ninety-one samples. 2. Saaple preparation for Rb, Sb and Ba (add soluble) l Aboot 2 g. of the total paint la accurately weighed Into a porcelain crucible, dried and charred on a hotplate and ultimately ashed in a auffla furnace at 500-350*C. for one-half hour* A standard ITVK datermination on the paint la also perfumed at the same tine. For aerosol samples, which cannot be accurately weired in liquid fom, the paint is sprayed onto glass plates or Teflon* sheets, dr dried and scraped offt about 1 g. of dried film Is accurately weighed into the crucible. The cooled ash la extracted with 5-7 ml* ef 501 nitric acid and heated on a hot plate until 2-3 ml. of eolation remains. This is transferred to a 100-el. beaker, the crucible is washed 2-3 times with 5 ml. of hot 501 ammonium acetate eolation, and theea washings are added to the beaker. If the solution contains any insoluble material, it is quantitatively filtered through medltmt porosity filter paper into a 50-ml. wolumatric fleet slag distilled water for transferring and washing. The wolume is adjusted to the mark. 3. 8ample preparation for total Sb (used for samples #13, 18 and 32) t About 1 g. of dried paint film broken into small pieces is accurately weighed into a platinum crueibla with coyer. 10 g. of 2*1 HaaC0Wa,B*0y fusion mixture is added and mixed with the sample. The sample is then ashed end heated over Fischer burner for 2-3 hours until fusion is complets. Tha hot fused sample is then poured onto s metal slab and cooled. The fused 'disc', crucible and coyer are placed in a 250-stl. beaker and 100 ml. of 502 HCL is added. The beaker is allowed to alt overnight. The crucible and cower are removed, washed with distilled water and tha washings added to tha sample solution which la then quantitatively transferred to a 200-ml. wolvxaetrle flask and diluted to the mark. Tha same procedure was attempted for total Ba without success; tha fused sample was not cooplately solid* 1a In HC1. 4. Saaple preparation for Hg, Cd, As and Se? Approximately 4 g. of wet paint (or 1.5 g. of dried film for the aerosol samples) is weighed into a 250-sal, grlenmeyer flask and dried. 23 ml. of 18U sulfuric add and 20 ml. of 7N nitric add are added. A SOO-wb. Allihn condenser, packed to a height of 50 mm. with Kesehlg rings and glass beads, and with cooling water is attached. Using a heating mantle. s-w 003598 cokpaht cxjimnmrixL ABP-BIW -8- the flask is gently heated for 1 hour at 130*C. The flask Is cooled and 20 ml. of 1:1 nitrfe-prchlrlc adds added through the condenser. The water Is drained fruit the condenser and the flask then heated taitil dense fanes of perchlorate appear or until the ample appears to be in eolation. The flvsk Is cooled and the condenser rinsed down with two 5-ml. portions of water. The flask is reheated to dense fuses of perchlorate. The flask is eooled and tha solution quantitatively transferred to a 50-ml. volumetric flask. If any Insoluble material la present, tha aolution mat be filtered into another flask before diluting to the mrk. Extrema caution oust bo practiced throughout this procedure due to the high reactivity and hasardoue nature of tha reagents. 5. Instrumental methodst Standard flaw atonle absorption procedures were used for all the elements. Calibration curves were prepared tot the 5-50 or 25-100 ppa ranges using tha following standard elutions for atomic absorption: Fb - Fbr?ro*), in it rare, Sb - SbCl# in dilute HC1 la - BaCl* in water Fg - HgCl in 0.25N HSOfc Cd - CdCla in approx. 4.5N HC1 Aa - AsOa dissolved in 20X NaOR neutralired with dilute HS0* Se - SeOa in water : -SV"-- - . v' A standard addition technique was used for the total Sb determination. After Fb end Sb were run HaCI was added to the dry ash ample solutions prior to the Be analysis to prevent ionisation of tha Ba and conse quently low results. A blank reference solution was prepared for the Hg, Cd, As end Se analvses using the reagents called for in tits digestion procedure. 6. Detection Limits: The lowest quantities of Fb, Sb and Ba datected in this work an! 0.0005X Fb 0.00IT Sb 0.000IT Ba For Hg, Cd, As and Sa the AA response for the blank reference solutions was subtracted from the responses for the eanplea. The lowest quantities of these elements detected over and above the blank are: Hg 0.003T Cd 0.000031 As 0.00IT 8e 0.00IT S-W 003599 COMPAFT CONTIT7ENTIAL ADP-8139 -9- Chlcsgo Board of Health Their procedure for load is the same as that used in tha Analytical leeasrch Department. Analytical Consulting Services. Inc. 1. Timmsnta analysed fort Fb, Sb, Hg, Cd, Aa and Sa In six of tha original groop of seven paints. Ba analyst* was not requested. 2. Sample preparation for Hg: A weighed sanole of dried paint fills was digested with HsSO and oxidised with potassiua permanganate solution. Excess permanganate was reaoved by tha addition of hydroxylardna hydrochloride. Insoluble material was filtered out and tha solution diluted wolumetrlcally. SnCl, solution was added to reduce the Hg iasnadlately prior to tha flamelaas AA procedure. 3. Sample preparation for ether elements: A weighed sample of dried paint film was charred under tn infrared lamp and ashed at 500*C. la a muffle fumseet MgCHO*)a was used as an ashing aid. the ash vs* digested with HNOa, filtered and diluted wolumetrlcally. 4. Instrumental method? Standard flame and flamelasa fHg) AA proce dures were seed. 5. Detection Halts: Tha lowsst quantities of Sb and Cd detected were: 0.0026X Sb o.ooosx cd The detection Unite for the other elements listed in tha Analytical Consulting Service*, lac. report are? Pb 0.001X Hg 0.001X As 0.00IX Se 0.002X 6. Cooments: An N3S paint with known amounts of added elements was analyzed by Analytical Consulting Services, Inc. at the sane time. The results are: Known Found X Pb X Cd X As X Se X H* X Sb 1.125 0.034 0.036 0.010 0.13B 0.034 1.131 0.0333 0.035 0.011 0.160 0.0350 COMPANY COMF1!) ADP-8139 -10- Agrmsmeae between known and determined quantities Is excellent. Arro Laboratory 1. Elements analysed for: All seven elements In ilx of the original troop of seven paints. 2. Ssaple preparation - water based paints: For all elements except Kg, 0.5 g. of total paint weighed accurately was diluted voltnetrlcally to 50 ml. with distilled water. For Kg, 1 g. of total paint was accurately weighed then diluted to 50 ml. with HfO, The samples were than digested with 1 ail. of 252 HaSOfc and 1 ml. of 42 KMnO*. Hydroxylamlne hydrochloride and 8nCl eolations were added and the samples In their entirety run by flameless AA. 3. Ssaple preparation - solvent based paints: Tor Fb, Pa and Cd, 0.5 g. of total paint was dllutod voltsnetrleally to 50 ml. with HXBK. For Sa and Sh, acetone was used. For Kg, procedure was the setae as, for tha water based samples. For As, 1 g. of total paint end 5 g. of KC0 vara heated In s nickel eroelble In a muffle furnace to the malting point of the flex, cooled and taken up In dilute RN0. 4. Instrumental procedures: The standard flameless AA procedure was used for Rg. Flams AA procedures were followed for the other laments, including As, with Arro Laboratories aqueous and oil based standards used for the calibration curves. Baseline correction r~' " for the KD5K end acetone was taken into account. All samples were shaken lrsaediately prior to aspiration, and the suspensions ware ^ hewn to be stable by steady readings over a minute Interval. Effects on the results due to any Insoluble material In the solution,v- or to the organic binder were sot known. 3. Detection limits: Ths lowest quantities of Fb, So and Cd detected for ths paint solids were: 0.0042 Fb 0.0202 Se 0.00012 Cd - The detection limits for the other elements were: 0.0012 0.0022 ' ~..V;. 0.0000022 ,0.0442 for water based samp^i..pt..i..ls.e'e.s.C,'x--;f'c-d\v*r'vv. V' * -.Jf- ' ~>x -W*i> CV. ~ ***': J.: ' \ S-W 003601 .1 CCK?ANT CWTTSZNTtAL AUP-N139 -11- Lowest quantity of Aa detected In the go 1vent based sample* vm 0.0253. 6. Com--nta: Although the Am results appear to agr-- fairly well with the others for neat elements, It Is not generalIt considered good AA practice to ran solutions containing particulate or organic Matter. Also, the Arro results for As and Sa aopear to be quite high. Koeaer-Hlatson Laboratory 1. Klements analysed fort Hg, Cd, As and Se in ninety-one paints. 2. Semple prsparstlon and method: For Hg, total paint was dried, wet ashed with HS0*-Hs0a, reduced with SnCl* and Rg measured by fla--iless AA* For Cd, dried paint was wet ashed with HaS0*-fl*0t and Cd Measured by AA. For As, dried paint was wet ashed with sulfurle-nltric-nerchlorlc adds, arsine was generated *vnd measured by the Outseit reaction. hr Se, the paint was dry ashed with alkaline fixative, reacted with codeine, and the Se Measured by colorimetry. 3. Detection limits: The following detection limits were listed In the Roener-Hlxsoo written report. The first figure Is for all sample* except Hoe. 36-A2 and 7B-A4 for which the figures In parentheses apply. Mach smaller sample sires were necessary for x the aeroool paints bacause the sprayed, dried, sersoed film* had to be used for samples. jTj ;.V- H* 0.000013 fO.000053) Cd 0.00063 (0,00163) As 0.00013 (0.00023) Sa 0.0013 (0.0023) * J 'As^Rt.^v *o'. - ' - . DISCTOSIOff ^?-'tt ehould be noted that all the detection Units reported Must be .considered for the element once it la In solution and not for the element in the paint. Little`data, except perhaps for Pb, are available to Indicate how accurately the elements are extracted from the paint and retained during the various ashing and treatment procedures. Analytical Consulting Services, Inc.'s work with the NBS paint does, however, - ; Indicate good recovery, and data obtained In our laboratory for ?b '?i&Indicate good recovery at tha 0.5-12 Pb level. ........ " M c~. ` 1^' '*.* S-W 003602 COMPANY CONFIDENTIAL ADP-8139 -12- ASTM Cooelttee D-01.21.03 fMatala In Lew Concentrations) is now studying the analysis of painta for toxic and heavy satala. Paints containing known aaouats of added elaoants at 100 ppo or lass and their corresponding blank paints are now bwing analysed by several laboratories \ by the beat sethods available to these lshs. These rssnlts will be coopered end the best aethods selected and defined. The painta will than be re-analysed by several labs to dateralns the accuracy and reproducib1lity of the oathods agreed upon. A Perkin-Klaar 403 atcade absorption instruoent has been approved and ordered for the Analytical Feesarch Denartnant. A graphite furnace sampling systan will be includedj this technique should enable ue to directly analyse wet paints, with.very low detection liwtts for nose ef the elements of interest. S-W 003603