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;;?nalvtical P*_°acedurss <br />'T'ransmission ~l~ccran rrs:lsrc~scopvfeneray ds.sz~ersive X-ra}r sgectramet2°~~f <br />selected arcs electzc;n di~ffractian {'1`I~"C~~/E'.t'?X,'~.~EI~} vra°a emp~loyeci ir; trite <br />t??~al,VB ..S CJ~ tf1G^~ samplt2. Tt'ie Y7.3 ~. P'r [^.'ci:` i7C3tlt!~c~E?T127ct'1 li5 dYl i7.1t Ys^FSO?"71C 17a t~7 s-l-I:C <br />an <;laquot was draE,~n. The aliuuat ~.aas diluted as resded (incia.rated b}. <br />screening} and an alictiat o~ Che e,i.1~t,~ecl sa;nple ~.~ras then drawFt through a f}.~2 <br />micr:~n pure size mixed cellulase estUr filter. ~ g7t7rti.an ~f tt~e filter wad <br />eallagsecs, etcY'ied, then t:oated ~n~ir_h a t_i;i.n layer of carnou in a carba;t <br />eti°aparatar. ~ small pi-ao~ sit the r:aaLLd filter rrae placid t~nta v 3 mm <br />diameter eopgrr TEM ctrid with the carbon side da+an. The samgle taa:~ Chen <br />placed inside a Jaffe wick was;Ier anCi Created with aceGr;s;e cc~ remove the <br />finer matrix and en~ar>se an}+ inert material.. <br />h'or each samglF, tin rrrid trpeniri~5 on ,~ 1~~ mesi7 TES; ~r-id are searched Prsr <br />fibrous strueCUres whi.cn, if prese~tt, a±"e anal.yzld by SAIaD and );D}~ !elemental. <br />~ai7alysis? . Leval. Il grottscol. recruire~ SF:?u ck>n;ir!rtat5tx7 of all asbestos <br />:LdC~P1C?'i icat.iC731 tu. s;.`~}i cCanxirmat i.cn 2s alsa re Cjtii.'-."~~ fC72' L.hi° .f ,t Y`~iC ~ <br />chrysoti?e structures, thvA first lei arnphSbnLa strasctux°es, anct ever}~ tenth <br />structure c"i~C.E2r the S car T.q structure minimum is me.t. 21a~ ttta~-phcla~Y of each <br />structure is de-termined at7ci 'the Ienjt3l and diameter of an}y asbestos <br />structures is res~ordad. asbestos fibers, k7tu~czles, <<lu:vrnrs, and matrices <br />wexe identified anti rtcarded. Theti:} ask~est:7., structural gave beer. defined it, <br />}'a!4tat:e et.al_, as (allows: <br />Fiber: is a structure ~iavin,, an asl~UCL rai~io t: L` ?:1 ear yxeate~- c:~ith <br />substantially oar«llel. sides. <br />Bt:ndle: is a strurturca ~omc7rased cf t't2r-~e _,_ more fivers i!7 « paYall~l <br />~arr7ns;;err~enr_, tsitia each L'iber c2~asc~r enan C7~,~: dixtrpet.et: :~( ~„Zn fl.ber. <br />c~lustez: i=, ,~+ sr.ructnrc--.~ vrith fibers in z~ ra:7dc~rn a; rar:~;esneirG such that <br />a1.1 i5_I?F~rs ar.-e iStLexcni;~~d and no sing! e fiJ~~r is isolaL•ed f~aan the <br />gr~tup_ <br />Matrix: 9,s a fibc-r nr fiber;; t•~1Ltt c~n2 i~nd z:ree and t.?7e other end. embedczed <br />car hi.dde:~ ~:y a part3.ru3ate. <br />I more than 1U,3 asbesCCrs sC~°uct~.!re:; ~a're iciantafied an~u aanfiz-;m~d Un a <br />samgle, L~k~ei II anaa.y,>is may be terminacc3 after cc~!e!piex.ior, caQ t9ie grid <br />ogezzinq o:hic-~ contains the 2t}Gt,: :;Crt.r_!_ux' . <br />Ecur.tion:= Used for C~l~:uiations <br />Aabestzrs 5trzzc~r.ur<t~ Eff . Filter Wirer 4am`~ .7 16C~ mI <br />Co:zc~ntraLion :. ------_____w _ __--=- y. =---------------T`q _ _,, y __m_. __--fiii~a£,T x lli <br /># 3'FM G3 i2btsntt?d ~ve.tage `rIIA %6 Ta..co {nU¢-)` ~ C.7XLC~S.37c l qv <br />Dilution fiact~7t <br />