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Table 1. Summary on precision and accuracy for BTXE. The spike <br /> mix is composed of benzene and toluene. Analysis was <br /> Method 602 - Purge and Trap instrumention <br /> performed using EPA � <br /> with photoionization detection. <br /> Accuracy J (�)- Precision------------- <br /> (�) <br /> Analyte Spike Spike duplicate <br /> 114=-_- --_-==-=110 1. 8 <br /> Benzene 5 <br /> . <br /> 3 <br /> 112 - <br /> Toluene .:� w-116- ----- ----------- �.. _� <br /> i <br /> Table 2 . Summary on saality Con ndard wastmixedalnlreageiitBgradenwaterosene. <br /> Reference st <br /> and then analyzed for the following compounds. 3 <br /> BTXE by EPA Method; 602 :and kerosene by modified <br /> EPA Method 8015 (Flame Ionization Detection) . 1 <br /> BTXE and kerosene standards were prepared separately. <br /> Analyte-- _--_--Amount -==Amount -^ <br /> PercentRecovery (%) <br /> Added Recovered <br /> (ug/L) (ug/L) . _ -- ---_--_--- <br /> 92 <br /> Benzene 90 <br /> T 10 9 '0 <br /> Toluene <br /> 9 .8 98 <br /> Ethyl benzene 10., 185 93 <br /> . <br /> M & P - xylene 20 94 <br /> O - xylene 10. 8 __10_2 "-- --------- ------------ <br /> ------------------- ------ 75 <br /> -.. - Kerosene * 0. 67 -. ��5 -- <br /> _ ---�- ---_=��---=--'�-�----moi-�.-� <br /> * The unit-for the-amount-of kerosene is mg/L. <br /> Table 3 . Summary on accuracy and precision :for oil and grease <br /> by EPA Method 413 . 1. <br /> Accuracy- - -_--__- .--Precision {%) <br /> duplicate <br /> oil <br /> -------------- <br /> Analyte --------------=- <br /> Spike Spikei <br /> Oil-& grease-===S0.0== _-----79 .0 1. 2 <br /> a <br />