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F I Caut,on: some organolead cozpounds are voia_ile and toxic. Process the sanplas I in well ventilated hood. Antiknocx lead =ampovnds ace particularly paiscnou: And must not came in contact with the skin or ingested. These compounds givg off poisonous vapours which must not be inhaled. Lead antiknocks should neve: be storad at levated tr:iperat;:res (prsfe:ably not above 130°:, 540Cl and should be kept away from acids and oxidizing agents. Ahenever handling orga- nolead or the concentrated solutions outside ventilated hood, adequate pre- cautions shall he taken to a;otect against exposure. Protective respiratory - equipment, clothing and rubber gloves Must be worn. Also material safety data sheets (MSDS) for organolead standards and other hazardous matarial should be read. W introduction: Crganoload compounds comprise the broad clans of organometallic structures that are charactewi2ed by at least one carbon atom bonded directiv to a lead atom (3) . Because of wide spread use oe the tetraethyl and tetra- methyl derivatives of lead as gasoline motor fuel antiknock additives, organc- lead compounds constitute the largest single industrial application of organs- metallic chemistry (3) . Estimates indicate that about 1450 organolead com- pounds were known in 1966 and the numter has increased with synthesis of about 130 new compound each year. .The widespread presence of toxic, volatile, lipc- philic organolead compounds in the environment can lead to serious public nealth of ects and damage to Che aquatic biota. With the phasing out of lead-d � fuels, substantial amounts of lead compounds frcm,,ietroleum sludges ate beine discharged into waste streams. There is also evidence to suggest that more toxic arganoleads such as tetramethyllead can be synthesized from lead (II) ; salts and somple chemical reagents in aqueous solutions. I I (2)Sc-eve: I The meth ..method is for _ne determination of organolead corn=ourds _ various I types of hazardous materials sample;. Ir. t1is method, xylene is Used to ext_2Zt t:e organolead from matrix followed by reaction with 1I A14cyof 336/M_3iC i+1 <3 I solution,. Xylene was prefesed to toluene and iso-octane due to improved flar..e conditions obtained with xylene. The extract is t:en analyzed ty :fame Atomi_ Absorption Spectrophotometer perkin-_:.per Made-* 3000 having a _dc.ble-seam photometer and deuteri_:r, arc background o:rector _o minimize the broad-based non snec4f.c background absorption. Lead electrodeless dischaz;e lamp was used as prinary light source, using slit 0.7 nm spectral band-pass for the resonance I line 2170°A. The detaction limit for organolead was found to be 0.1 mg/Xg as pb• I WA I i i I .w � i