Document gDwG9Y7g5MpKEGv6BxN4aJgJG

ENVR eubit it hydo* *lo- l; !i 0 #r ltd tn 6 hlo gr to Asti* ofton tlone if full ,0 0B nbo. >f tht iiitt* wort loutocd* BOO W MOtBP wlk f,. TLcse species for which flab of widely differln* vdrM* were analysed, lsr- *' ia had hichr ee*icentrolion of tree# elc-.ent* then aealler It ec--3 that ^'vt'.er re'.V.'-r t;, frchv,*.sr f:*i hew* sare true# elenent contents. Vnrittlcne In ' V[;f>rc*;cs in site, lift Ulsterite", dietary habit*, uil concentration in ti.e rturino r.-- .rswtcr.* half-i-i^ of poi.YC.iU'F.:vi7i;:i B:r.!tN7L (Ar.ocr.ps 1254) in n*:t ryox an al-taxa " AJ^ri'.VOlR STTu.v:. C . v-.-t In. r'.iry W. vittcr, Foiert S. Rurfii, ^rld E. Ct.irirc, and Ann C. Ard,.7IZ^I3TUniversity School of Public Hc.ilth and f;*Uel Kcdicin. 1430 Tulans Avenue, New Orleans, LA 10112. OtC* Iron an eight year (1969-1976) field ttuily for PCS'* (Aroelor 1254) In fl*h (;m>| Choetoloeo Creek and Lofan Martin Reservoir In Alabama wet* .it.alyxsd. two d(`tlefial year* of collecting fltht data completed the study. Four flan collecting sta*im* wrre srtabltshvd. Station ul ves a control atatlon stiles above t.a r.outh of Snow (te*k (vhlch la known as th* ditchwtring point by the FC3's plant of Monsanto Ciu -tcal ). Station rl and fl wore downstream along Choecoloco Creek and Station -4 v.\ at tho U>jan siartln Reservoir. Concentration i-C FCB'a (Aroelor 1254) in ti.h tlaaue were ana- ltd to detenune accusulatlon pattern* over tlete and to calculate the half life of the .'/^ound for the varloue fish species. A decreasing concentration of PCB's (Aroelor ';%) in fish was observed Iron sacplae taken In Choecoloco Creek. The half lives (or individual species range fros 16.0 to 27.9 tooths with good statistical correlation withit individual species. The average half life for PCB's (Aroelor 2251) fur all species ms 21.2 months. In contrast, fish sseplsd In lopan Kartin keaurvolr (Bass snd Ion-ear fish) shoved tncreseing PCS rr.nesntradon over tlno. Based on uptake data, the proecttd its* for doubling PCB concentration la *6 aontha for Lonpear tunfish and 61 months (er lass. This Increasing trend may bo due to the availability of FCS'a because of rasspert of suspended end colloidal naterlal dovnstrean from Choecoloco Creek. Differ-, eat uptake pattern* is flh taken froa atreao and rsservolr will be elucidated. I. SOtUlILITT or SOKE 0K6A.V0TIN AATIFOWjLVTS IN AQUEOUS SOLUTIONS. . Otcan and It, L. Coed, Division of Engineering Research, Louisians State University, Baton Rouge, Wvlslsns 70B03. Trlalkyl snd erlaryltln eoapounds are well known for their bloeldal, antifungal sad satlfbullng activities. Tributyltls snd trlphcnyltln ditlvitlves la particular have Inad astensive use as toxicants In asrlbe antifoullng costings. These necerials era tsale to * wide apectrua of marina orgaaloaa and in order to develop efficient anti- leellng coatings which result In ainlaal onvlronaontel Insult, a complete undemanding f the aeueeus ehsaletry of these conpounds is essential. This report describes s uapJoie quantitative analysis method for low concentrations of organotla* In squsoue Misties and the determination of the aqueous solubilities of e variety of trlbutyl and trtphsnyl ergsnetine a* a function of pH la dtscllled water and In artificial seawater. The srgaantlns ere concentrated by solvent extraction snd directly determined by an tloptation of tho dlchlsono apeetropheteaetrle oethod. Tho solubility deerssse* slgnlfl:astly l*t basic solution and in seawater. The results can be^explained In terae of the isele solubility of the orgenotlas. * A STUDY Of ORCAKOTI1* COMPOUNDS IN AQUEOUS SOLUTIONS USIKC EXTRACTION TECHNIQUES. L t. Wot.arhan. Dspertaect of Chesistry and PhysiwS, `orthwestera Stats Vaiverilty ?f oultlaaa, Natchitoches. LA 71457; V. I. Kulkarni. Department or Chemistry. P.C. Center, ^vfbtrgs - 515105, ladles H. Orean and Kary L. Coed, Ulvlaloo of Engineering Research, <*Ulana Stats University, Baton Rouge, LA 7090S. Orgsnotin conpounds of the type (s*(l!f))SnT era used as toxicants in sarin* sotlf*ekleg coatings. Although tho costing matrix la thought to central the relate* of iMtcent (re* the eoatlng to tho eoswacor environment, little Information ie known BMeming the raaetlono of theeo erssnotln coapound# with water. In order to gnther r* ioforratlen concerning these reactions, s variety of trlphenylcin and tributylcln ***l*eenda were suspended In distilled water sod artlilclsl seawater, and the dissolved s were recovered by extraction with chlorofora. Ranluuee recoversd icon tho (Uerofurn extract* were axxmined using thin layor ttronatopraphy and infrared spoctro- M**p. to sast esses either BujSn- or l)St* were lAentlilsd to be the pris^ry soluble (*^eetat. Trlphcnyltin chloride evldeocly underwent conaidersbl* degrsdetlon in eoluUw *s t(,Sn, OjSn-, ejSn-, 4Sn- noletles were Identified using this layer chrooato<tsphy. Structures such ssRjSnOH and RjSoOSnSj can be eliminated ee paeeible soluble "Nclee tines v(0-H) sod v(Sa-O-Sa) stretching vibrations were absent in the infrarod Nttr* of the residues. HONS 00280 7