Document 3Q5g1QQaw7bvrXy8XKmygKjn

THESE MATERIALS UQVIDED BY BALL STATE UNIVERSITY LIBRARIES NOTICE This ma* eria1 may be protected by Copyright LI) nlj 17, US Code) The Industrial Chemist, December, 1939 Air-Borne Matter, Part III Characteristics and Industrial Implications By Harry L Muntgomery Larcombe I'I'- Has been -proved -1h : idift rt: .`-.ss i 'iif- Horp r ) rnritcrials' . ,.:Vixiiy>vtd/ifn--tTiSiiV-feadicss^t?VbtErri:Tor)SeVy;jrfeisorts; . /If it>.'iy j>e Litri; 131u;si:I*stfs;'ce i:i d<:r consideration oxidises .v'viit H;/p6iiVp;i RSi'yiiTy< gri&y.t iit;:JC\) l-lToti' ;cusef; ivery )' \c'<>i nT->vis(idn, iKV itrVij)t;c.i.Sorne clut s .sn;i v; b11i;i: r <;ri i1 y -on; i '.-/ccoutit: V.t iheir ::y.;i uc;ure /.this is /because/thvhy ;is o/pliit.1e\Hnf^6rcn^c:e,c> hfe' iv;i ri tvocessy;to;: 'fHcjnm1 iiirn t); fidii s ;-6f.HHfCT^r)a ^ ^^i^^vy^bVTTapsOiHe^^reft'.t^st^TactiVvr-is-'iKp^-a^tttVTit'r/cr'ry'yolartiTe;/^: . \ 'wcL below t iu; .ignition ;i einjitii autre' fti. tiic .rnutci ini iVss.-If). : ' r/^fcse'ivcii alileSpfiep/b&bine/paiiffi '. Hi:tin is knoWii 'a;. pi'-acnt:1-') ylicpoiininishJp .n'lrapbxjsis between . theirdlaintnabiiity ot given. i:; a tor in l whein; in7a: (nijyn'yiviaed sfat'n aiid' ilie j 1:^ ;nv'riii;lcV. in liarticClar sur[5c:i'cji/iracii:HSti''.s'' Oir'accoUnt-.o: -the : tact l ii a i.:1 now dciTcl hn.t tx:r in.r i o;ichiy .a IVsyn b?.;-t!: (v-^as' ih 'iwii1c);/ciVii^-sws^6iirfe%1:(irtiyn;ay;.^_etfp&j^nai3y'I^rjrtcliV:rt^riyt-7hia''tj:r! a:i -o|(Vri i:f;; 1u 1 ar surio.cc yyill '.'bsbiTi g.Vs. uiOnpcf.sily `hair a' rfclrl'ia,veiy;pia^7^rkihcd7'sU'pP(uyep7:p^^//;/pyjP:P;'';ry;p^:;^; Wlre^h;part jd)(S op'pssess-- tnli^striCTc)tafr^-r;i7i5^';'>wiii;'i'in';'i ..similar'ct iiditions, .bi'iivf n:o: t i ciuHiy vciin niove coiiipletciy '?han':prif;ijo!c:s h:yi/,Compacl.,inaltC7Up Composition of the Atmosphere "ably, shpwli 'iii':tTio;':CX.';.!';!p!c,:o.r; powdered -coal ;\yhidi' is . ' kno\v!i to l-/aye ies )o:. a 7vi!sly. ex | >itfs;vV nr< 11:i <.. - i V ./. The. prcsenbi/ol in eft a i r- bornd iiia t oria i i n) i 1:e air; 11ow- V ''icvf:r,- may &v in i:cri .fc iiv-nr-jyrtic^n'l I'.at :: :iks v'tjc . . absorb .S'. nn'iclr of:1)n:r lu;ai u! combustion-that jhigtem-/ " ipf/tli'0HC^i;rfV7ust-ible':friat"erjjilTWiilTiyp'fcya'e-'r:aiso'ay-to>,ir' > ;r- ;th<S.iigiiit i f'ii U:;c7rn]Veihiyrtu X)'ndef vth'cScjfioivtj iiioils : fLie - pyp-.r-'./i : '/pagaiiol! 'ot tlur flaire. i hro!.;c;l: Uie-diist/jioud A'ill-'oc' ini-"./ /PposSiMey/iVi 'irCfJ;} ':///' V.- Tiica vfore.Hlie extent tb;.wl-/ihh irici;^^natcr!:'ll (:ah picvCht . ;.ignitio:;' is dependent. upon the-proportion -'.of.swih'.rnnt ter.-.'. ..that is present, and >Tso;ijj'bii ;tiu; spi-dfu: i:(nis;a!: it/ and ' o .i(bc iqoifibusii bfeVrfiiatEer;?>:'o\g a1 riV/tliis ;.i s^extirinplHi <sf|iiv. soni 1 V.O"ii'i"ifiirijB:.-wlierii;i]ie/p'rAc,tice;rc*C-'SttirYej:di3StirigVis3pnc.-'i.ST'TTri'3:icf'r ;>)- r liTiSort.aiaco;.'-. :'-';t"..-V t-"-::'-./. :/L'S'r! ?; -J:: . Tiie i 11:j ;'ut;rsi.fi b; 1i tA', of ..a 'i3'iyeii\ <1s!. is. 7i iyf i )y dt dc/ri t.; 'upon thc/sizeot. ttic'parl fcies; tl!Cir,st:'u6tiin':.;t':ie;picsLni.e;; . .. of adsorbed gus'upon .theni ..rul,iiie extehr.'.p which jliey/; . arc electrically, diaigod. . '71110' ehonnbu'dy jiicrynsou-.clux:-',;. . -t rical capacity .'of ?-;fnait't_iqr.vy-iTi';;a:.r;fiitiiiy^'diyicrjci<.Pf j frcanOi-.t iiainifibhi oiy cdus,-:. di ex]'ltisipns c>( coinlv.istible/ Degree of Dispersion py p./Paipa/giv^ )j iiiftaElii lia'biii iy ..aitd.VfIie` rate of. u<in ;1: ;* s ti .>11 tire; increased' rripTivLIy. vLls-an 1 lie rl^xygoh pH'icc:rit.ag-. of the! air; is iv/duaki/ n:n.i' iiicrVJpsris '\vith {.thfe=. .iilcrCnstr `};c>f! en t .p. '. ;. \v;tT; ;i 11' ;,iv. b:>i r.e inn':Li-:/. *Hist .is :.no l>>ni;rr jr.l'. iir.r.iahie.^ This'pniicipic:' l ps; -jn-cn useil.h'wii l./giinding' .niaciiiRcry." foi rcdncPon iai, i'o pcwdcicd. :cm in ln /lytirliiig. tliio: gasiiS.iino t!ie.?.cihc;p( iiwOrldngp;)p:pyy;^P;///;;Ppyn);//.';3h/7 >v'/lTicXifie.6f.y; 1hicl^iv^fTrgery ;j:*yt.V/-foV^nirtly^>ti^eliminpLtc'7 'miiirLly/tK^yidStpC'X'plpSiotys'iiiVo:^ .thooxygi-n .eipm-ni.lo. 17p w.-.s. inipossibk:.. 11 :is'.we!l known Tht he:inti c.;:luctii.i: oi" :''c6nWj:i.ystii)ie !gksf:'s /iiYt,tf;;vheci!|fttdium:7fff:sOSJ5ensV0j,f;<J't'.disfier-.:; sr.ii.!sr:iiicr<-asos tlu^ir .inniunn'iciliility.'' :'.' '/'/. . /. FKi':i tin; jio.itil <i5yioH/'pf pd.ssil.ii!iiy"of explosion the igtii- ,ii6rii:.of ;yilieyci'nst;:iS7 perhiips'.' flief_in'pstp:'iiiVpoi;t A'Ctcfivj Wfnliods ..i):.. igiii/ior. can' rnnghly !>: ino'apcd.' in thiee-; I'laSSt'IS .. '/ :: - V . v/;. ;/7 / / / -.'.. . (1} :.SpOi:ln.iicoiTs:iC:nii:i,ii^!-io}t.---:\u lire. casn. ni rl isf, tliis is u.su.illy vuo 11 ,~tn f ic- ricify .tli'nr has .-Ktc-iniMlatccl. ' CHiiso of ti t: liasi: of .iixidriiioii.V'.'f-hiany jiyui.'i.ials.; iiowover,; (.Lie lact.Uiat diil/iioat </f <ix:da tic^ii' is .oflor \T;ss!j:>;rtyrry <|\:ickly .it is' .^i.-trs.-ratc<i ri'-nU'-W'lhip;.inut.t`.>dy'ii:!usV:;il.in 'ii.ir. tii'.ityririisi'tvitrr ihc exception'of coal. : ' .. ; ': : v Particles of asbestos x- 79 ;.. >L,:!,^TTycfcafe;e'-]iii:;surTax;g'^^6i-/Whb"h:::ffiai<;^.jit"-'ittorB^ci'V4iTtffei6V''.4't,7:i .can bo. oas!ly '|ii!rM!rstm;ia ilLat ;!THl\Hiria.:k':r.:ihc..panicle the: . :'i-,;?7iti,fe-:rie'if'dily-it'pair'-besya'isedjro'iigni\(-ion';tfiiifii jr>Sra't u rjfe'".'.'A 'fjy^djciiig.'Th Jgreaf.eiy;YiuriibcrS/rTheyparticie'S\^rc;cJpSer:-,'t'bgcthSf |r. '..f.arid/Tietter" fib)e;[t '&/coir'iiniiiii cat.! i eat ybnfti/UyrindfjieW^'Inp Cf/Cii'dife ; yilj e';; 'i'ri fi teri a];visP.o.x<;(ie3 iiagl y / vsinal! Soinu oi the particles will beriv Brbwniiui iniwimunii:; " ,/:;thi;sC/wil!j ^iafly;;Pvyjiiate::!til6 vjiropagailorf VoTpfgiTi!:ion^;ih':v -. tlicxluuVi. ; As ixas .a!'i:n<ij> bc:e11 'mdicatctV the inoi t-;finc:!y-/ : /riiviiicd the dust'- is: the liiori: clearly does, its'-.bciliayiour approach thrift of a;;;,'is;: in no case, liowcA'cr; tiiis'diisi: lAwn. . : phscrycit.'tp'hurmpviih a- .t'b!oc:ty/cp:pp:ir,ynle :to that -6i V;j./mi^'Etire^_//a'lai's;i s^d'ue:.;tCi -:tTi'q: 7i tit; eycn''tHcyirtj''6s>t r."- '/fSbecome, :/igia i tecjp/S n iirjri//:au t->vuti eii/.tcCsmj>a:rcoLy Mp itli1iadV/ ):'/;.inp'letvtlfcis .(ii Vpjgas'f-hAVe,rrhistifr('o^:f^rget%\triev'-coivfjgije:t:'&;;coJiiy;^ rPhnstuni oLcer,,viiirorg'anic siibstariCipiPslil'ts/in the'.'forniii-.. ^ V. t ip:i oC rcliCt i yt-1 y) 1:i! | v <`>11 s n i os' .</ f tja a sr/ - Ii fi'L't hist'exj:>]c>f>v-; ,'.'-p'sioife'/ri'ihy;:'d6Vpio'p;;a yinhxrihhind/hasssijri^ . 1f^roacii`.tliiisi tiifit'gehemti/'et >.yVt r rhixtiiro. . . .; '.."./ Tin SB '.Belia,. ./Til / ; vluriiV./ . .tiofi/' / Influ In . lurcii ; ; the. fi. ..and i-it '.which/, rliai'ity- /'iegtir, .'.oj/ihic . vdcphn I'.- ww of .'.bri r M the. si tW:V.m-r All /oy.er/a';/ niijuri.c/: . I'e'hviv ' 'dual hj' /si;/:, c! 'in.-tiii:..; iproeps;',; r.lj'uf . t:i SiVsperir, dt/ligt . \ rc yvliich;/-highly;, hccniini l'ario of 0 - 75 i>t .pi'intigs; ; arsenic/ while t! i.relatlVe; ii'ffey tliChos; ;,i6Hilie-/p Passage; i.lVo'usiiiv