Document 1wryKRV7BX4qoEx83RjRw4mK

iI FE D ER A L SE C U R IT Y A G EN CY FO O D AN D D RU G A D M I N IST RA TIO N W A SH IN G T O N . D. C. T)v. S o b e r 1; A, Kehoa h o tte r ; ny L ab o rato ry fo r A pplied P bysioloyv U niversity of C incinnati " C in e in n a 1 1 , Oh io FEB211945 Bon"? D r. Kehoe Dr. Duiior V h a s r e puer*r cci :vVi Of V;0'.IV 1 o t t e r c f l e b r u a r y f-; t o & 4 jr.uri in d e f 7 V/\;j - h o v in y mcch to y: ;.. v\\:'it r> v O',77 ?1:r::nr; 7; `hb 7*'f>f`rrsn Cr.` t' siv' C rObiri.\; rj end t o l r a nee ;o to A k t C h ase. V-!p a p p r e c i a t e v e r y 'nase a c le a r end concise s to te c o rfa ir m attftro w ith le a d srsen - i r.of I <*i !\Y` th e se c o n d paye i :' -- yn,V/' o p i ni. on 5 th e con; r ; '7*': 7 - ; "Of' i.'' ^ chan ye i n th e ls?e :r'" H'' -b be l o t e r c a t'~b i: n have la;;en in to c o n s id e ra tio n , s itio n of sp ray re sid u a and recoye rs c n c to dv-' to \vosfcheriag p ro c e s s e s , e p ap er r v b lis h e d by U r. Jac> ,, b>' ^ ' fi-: P -- r-7-*f yen f o f Arr;.icuy t i ile .; t o A r s e n ic s O vide i n Lend Arsi 2 e r tif .i.e e ''C oar'-c y- i n .R atio o f a t e .i-.t s i d ues on A n p lea -, *J I an th CTfT o r e 0 110l o c In V 'p h o to s t a t o f in p ap er T r? r ' , ir 'i.r l L n- t h a t e v e ry -- ~ n - r t f ' "O' end voy- - - ' a - , M .n yo 3 Enclos ura P hotostat ) Kt 0008469 N9721 H E' 0 0 0 8 4 7 0 N9721.01 H Kaai&ysyjweL- i*>%- i'"' " V>* ,% .< - '. m s\ S|p % i & a & t -* > ^ v - w w m & ^ ^ i f 'J l n Iv A tia tio ij^ w :*,i e amples .B y statistical analysis <ff 1 Vetveeo samples .<**. fe^anainatiort vquiie<bfor sj^caire bet\verx'th r|sul^ jj^ r <n Jfrtdis j^f^tti&irzuprBjSnaIyia;^ji brougE^ir>jm- '^mvious-' u dy"Fahey .and''`Rnsk Y BxcjVSSgT'Tal IJrlied" ;on ' dpR cate^ -^2^rut sa % ^ p w p ^ f l c t e ^ s ^ e , o h ^ "v i ^ ' d i d . n p fc 's H b w t B e '- w i t K i h ft^$ti$^t*j^^pFpo>seof this-., Variation* M eguafely jmimh. greate fcretCes '-were required tp~jndcate nificSjce'Jl'As lirj& af'sdy/ r a f e ^ ^ ^ i ^ ^ ^Uyj^rf^Riryr-^method,(Wiehgjann t a fc lQ fii^ ; ^ !^ M S iH 0 ^ w ^ e .^ ^ v c iict u.meam1,atxos'sof lead ta -arsenroirs-oxi ^esttttmg*fir the the i V*ybsples of;eaeh. sample taken an L \fU r ^ sj > 3 g lj ^ n a t lavcep. ^raytratm entsr-T his_ s tlu iv p l t i -^$ TiS r %'? I d r ^ e .# ^ Si n->-ws a mp )*<Vy^ar i a-Vt. r <oi>vwji-. t * &. tqj;8aqwa ysjy aimur coange-ra, rat A s ^ r ^ t i ' ` : `i - .f s ul.to add 6) . arsenifeua oxidj'fplbls show -relatively stall 1d,if3f>er4en. cSe' fS W ^ r, 1TM 'iP-*1 .''` V*"' Y" reqmrpdt fax isifnificaric>'Plot''i vyhich / ^w 8 S fB 3 $ f fa sw t& * g & fet dhano!^^rtio->soJ, ma ^ ir T ^ U ' sJhbws,i.great^within-sampie yam U pni. fY iprpfnri* W p ^ p p * flffp Y p rti'p T ip h tfp p ri Reasoning: If a-yBfcidue is Oftjy slightly^ v .affected by weather^ the position of the ` f P ^ ich residue is deposited;;,> r^f^tn^fqprtfceoyet,fp^^soH A atrfbs-:' yrith respect to e&jtosat&tp the elements, * , ^# J# f^ i:C 'il* ^i"d f'|p ^lQ n g i watCridg^itfght be^yrould have oniyysinall effect on. the td- ' _*, i; 'tJ ght ^,wiX'^ v r ^ w - */&s 5v i > - < ^Tt " JS --T'L.'"?* ^ <-!r ''X ^ r ^ ? t ' j - , i* --_ -T5^ S.-I - _ t*- ,, * Tf \ I-." \ J>,'n ^ 'rJ,. ;-;,K..X'-. ,VW(- r:-.-. r ^ . . 41.v<' ',.' ':.% tT ,, February.I9M. E a u b t ': R a t i o o f I*b a t o A RsrjN iorR O x j d r n c I t K aro o s ... - - - $ 5 ^ *** -jhk.' < -- *. ** ^ ^~ Table 1.--Ratios of l$ad to prseniouS oxide In spray-residue deposits studied d u ring'theM 40 growing season, based, on 10-fruit replicates. ", ~ , - -y A v RRVCE LEM A lfsB N -Jcit'frO M Q l. R jV H O '/ , \ ' Kind Vrienateiutk j r*' ^ Ifcj^t" "" ** " / " - , Bordraus,. -Bordeaux, CoVEIt j CRa 'Y * BfWEfK^ -^fietai * ^ Wetting Mineral " k s D a t e r Rr pm - Sa m pu n g s ^Alotio ^ 1jute 0(1 * lrce.ui;, AgeJH -- *" O il" - Sa mpu n o l " c a t e s _ In h i e s . -. Plot 1 ' -Plof.2 Plot 3 _ "Plot t . Plot 5 'P lo t jfl - L. x-^C Second y ^ - - , ' M ay jzd - Jonc 2 " f ; ; y ; ; iPitird: " . " ' i _ '*' Ju n o 3 f-""'" June 10 > _ ' 'Fourth'1*_.-a ..v. . "" " , June 30 -' r- "5.* Q 2S, Jfrl'ith v - : ..., Xuiy '^ .f'h^ Wv W ,, ' ifuly 14. ~ - ' ''.JSixtHrf - J- 0 .4 A- .. * - - A July-je ,,7W ' - July-2H V* * y *'Speovve-cniituhi' - W -^ -v ^ " j & v ^b* July-30 r^ ,, *J - '-Scpi: 10 " , 4 ^ ' 'J5.94: . A_ 2 OS .7 -2 09 2fd8 ` , 1(1 ' 2 O i , _ ^ 2 . 0T ft l) - ' os > a 0 -* 2^ 2ft_Tv ,, - 2, 10.. 2-SO ' 2~lit ' 2 T fty ' 2 .21- 2 ` ft '--eiB "~w 2 10"^ -2 -2 1 _ ,,4 ?*s ____ 2 4tf ~j : " 2 2a $ : 30 2,24 C.-^ ^ *.& 24" 2;4.>-:' 2*24 2rtlT - 1 1 . 0 1 1 ' ' 2 d U -i _ 21 -,, -' *- '^~2\-sIS*..A'Zf%& ^hT 2 23 - " 2.13. 2,f2 " ' 2 b ^|! 3^. %-a a ^ * wew* ^ !:i;2 T?=v" ' 2. ^0 ' *2,24" 2 ^ 5 " *, , , ?> -* - _ r - *- ^ 'I.eaat Significant Difronrp Tir tldfts oF 90 to ~j_J' -.-1 -- XJ " '7 ;. * " ~ j., . -% ~ 4 and 3 3 1. 'At. lft.' ' o o f *> . o : o 9 nas o .a i'; 0 0S~'J 0,11 ' ' 0.07, - -0.0 as favor rapid"'"chane from watfrjr- ixmlatisj' docs' t k i.'sKo w .' a stgttiftcant - ir i 1 _ * --f - ._ r i v -_ - ~ ~ ` Th results o f'the wunfhermg of t c s ->T otheT-tmitmcnts show significawt ehatigos ji,,'rS 1 .-<lues are given in tabl T. Exce pt fo r {lot in fatto. These jietiodit are .June S ,t o f10 `/V 4, alb plots received .seven cover sprays. ' and Ju ly BO to September lO.V^iio -pre-1 " Plot 2 ,'lead arxenatedime, sliotvs a _s fg -'' ctpital tons during these periods Were' 1 .6 ^ ..hificant change iirratjo of lead -to avseni- inches aml,'5;f)4 inches, respectively. X'| ot, '" *} , ous oxide m three of the Si\ ifeatherjng 1 (lead arSeitate alotre)'. sltmved a signtfr. - periods studied* .Plo t. 4 , dead arsenate- - cant, change in ratio' o f lead to arsentoils' , *s , *'*--f~ ^ -- . "i11- ' - -v -- ^ 1 -- . .. ' ' ' Table 2.--Ratio of lead to arsenious oxide in spraytesidue deposit's subjected to extended*periods - of weathering, based on.lO-fruit replicates..,- ^ >' : ' - jati> ,j At h k \o e l/i.<vn-AnscS-toiK. (K ini, Ra t io ~r~ti.*'*"T*' ---X ' e- * _ wc AtTEH* 'TUiff ' *^ F ir s t . 'Bet xvekn r- Rrew- An xr,y- SxMl'I.KXGs,' 'D a t e ClXTpl, SIS , In c h e s June 13 5 a _ _ ,, June 30 1 n ` 0.28, ' . - .Tidy 11 t- 34 a 4& - July, 23 4 %5 -1 CO Sept/IO " 4 X ' 80 . .5.94 ^ sitfnitiaiftt diffrrfrncc at odds '7 - a f 9Q to I _* ^' Alotie " , Lime Plot 1 B u t 2 - 3 19 >. `>5 _ 3 31 '2.34 ' ' 2 .4 3 ,> 2,53 l (0 3-73 2 S3 3,03 0 17 0 29 Ia mc Arprtale w ith-- Alnier!- -, cj *<BWordeet taiunxg;, Bordeaux, M ineral . - o r Bordeaux \g<.iit Oil " . ,, Wot 3 .Plot 1 P io t P lo t ft - ' , ' 2T g o ' ' 2 .K P --' -v 2 s f t --* * `3V{ft "2.30-* ' 2 21 - 4. f t ' 2.21 ~ . - 3.2h 2-P * '* 2 .2 2 -' . i2 ,2 l,, 2 '2 7 2 28 3 '2 2 2-2F -, : , a ' " , X-2 30". ' ' ^ 2 7 3 2 ""2 ,2 3 t --, " Tl * fr-flft,, ' 07 - - r. o r - - ' A `l' w- ^ T"%. - Q* a'^,J *'-'" ^ 7-C ''r.,r.;.^-xv:y.r"7;; r- -