ARCHIVED REPORTS_XR0003172 - Laserfiche WebLink

Home Browse Search

10/12/1995 20.44 9163519357 ANNE M FARE PAGE 19 C}-Cto)and higher molecular weight lube- carbon is calculated,and the bulk compost- pounds, of whish iso-oLtane and toluene cstingJtieatingails andcrudc oil Sekcaonof tion of the four major hydrocarbon fattubes are the dominant compounds. parameter will depend on the site-spectfic (n-alkanes. branched or iso-alkane - cyclic JP-4—West coast !P-4 contains many sttuatian alkanes, and aromatic hydrocarbons)is de- more n-alkanes than aviation gas and wmncd, gasoline 1n addition.JP-4 has less eubsu- stasoilwRangs Rydrocarbons cured benzenes (compounds that are less Due to their higher volatility. gasohne The data obtained from the chromato- likely to be lost during biodegradauon) hydrocarbons in the Cy to CID range are graphic analysts can be used to tdentify the than gasoiine (It is important to note that handled differently than the heavier petro- type(s) of petroleum products present in a JP-4 can have a di ffcrent hydrocarbon dis- leum products and crude oil Products with five product sample by plotting the informa- tnbuuon pattern on the west Loast (CA- hydrocarbons mainly within taus range in- tion on a star diagram,such as the one shown ifornia) and on the east Loast (Massa- cludc gasoline, jet propulsion Fuel (JP-4). in Figure 1. The differentiating charac- chusects or New Jersey) avtauoa gasohne(AV-gas).and naphtha tenstics of gasoline.aviation gas, and JP-4 are as Tallows Semlvolatlle Refined Fuels and Forthese lighter hydrocarbons.GGC typi- Crude Oils rally prefers to analyze a free product sample • solute--'Gasohtte is made up ofseveral hundred hydrocarbon compounds, most Due to their composition.semivolattic re- instead of soil or ground water The reasons of which are within the C3 to Cto nmge fined fuels and crude oils arc analyzed using te for this atwofoid 1) it is difficult to re- eters different from those used to eval- move vp$tilE Hydrocarbons from soli. and however. it also has components with Pim m many v addk by are polar and consequently carbon chain numbers greater than Cto. uate the gasohne-range hydrocarbon Semi- can an strongly adsorbed to soil sequently Regularunleaded gasoline has the follow- voiaale refined fuels within this category are c making trophem difficult to quantify ing typical bulkcornposiuon 1146 normal ketosern,diesel fuel,JP-5 fuel.Bunker and a=L 33%brand(um)alkanes.8% residual heating oil.lubncaung oil hydraulic GC Me> d Dah1dl0 sd to�A 8 rlAl cyclic alkanes.and 49%aromattc hydro- oil.and waste oil Unlike the gasoline-range F Q M carbons. products,analysis of soil or ground water is GatrathwRanpe Hydracarbeas I Possible for kerosene diesel.or JP-5 and less GGC has developed a gays ehtomato- a Avianore gm—Aviation gas consists of volatile components because they can be ex- aptuc(GC)analytical method that identi- signtficantly fewereompounds dun gasp- tmcted more eastly 4Fgr, es79 hydrocarbon compounds from Baso- line and has no hydrocarbons heavier than Ute-rsage fuels.Using the resulting dais the Cto.About 95% of aviation gas is trade Imnally. it is possible to characterize a relative proportton of each idenufred hydro- up of tso-alkanes and aromatic com- heavier refined fact by first analyzing the PARAMETER RANGE A A R+le>ttylrydohexam 0-2 n-heptarts - B a 2.8,,4-T ffwft lDenta a..6 H B 2*_'0iMethylQslb= 0__jS0 G X aromatics 0-70 GC. %eyc5calkanes 0-30 + F e %iso,sl Wma; 0.100 .. - G %n-alkanes 0-30 H 2-Meeiyl !n ane 0-5 n-hexane D GASOLINE _--- AVIATION GAS E JP-4 Sourer t R Kaplan et d FIGURE I STAR DIAGRAM SHOWING CORRELATION BETWEEN GASOLINE, AVIATION GAS, AND JP4 BASED ON SORT GASOLIXE-RANGE KYDROCARBON PARAMETERS The Hazardous Waste Consultant:March/April, 1993 1.9