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Table 1 . Summary on precision and accuracy for BTXE. <br />�` :a��neaae�raar..�r�aiaar=srsex-acstaraaszs=ss:ae:�m�s�=e=em_===a=a—a=======_;� <br /> Accuracy (t) <br /> Analyte <br />-- Spike Spike Duplicate <br /> Benzene 97 95 2 <br /> Toluene 98 97 1 <br /> Table 2 . Quality control/reference standard for BTXE. <br /> Amount Amount Percent <br /> Analyte Added Recovered Recovery <br /> (ug/L) (ug/L) ( ) <br /> me�aqssaa=wr�=rraascassaa===an==mae uso�=ae=ra=�=n==:-;a.�s=.—axav=a=ss=as=rga�fs7esas , <br /> Benzene 19 . 6 17. 9 91 <br /> Toluene 20 18 . 3 92 <br /> Ethyl benzene 10 8 . 0 80 <br /> M&P 'xylene 19. 7 17 . 3 $8 <br /> , . O xylene 10. 8 10. 3 95 <br /> d <br /> Table 3 . Precision and accuracy for kerosene/diesel and oil <br /> and grease. <br /> Accuracy (�) <br /> Analyte ---------•------------------ Precision (%) <br /> Spike Spike Duplicate <br /> w Kerosene 130 134 3 <br /> oil and grease 85 81 5 <br /> Fable 4 . Continuing calibration standard for kerosene. <br /> Amount Amount Percent <br /> Analyte Added Recovered Recovery <br /> (U /L) (Ug/L) M <br /> .Kerosene 0. 458 0. 41E 91% <br /> �� saa=�=-:a===s=ss me=meeerJrmea ra aems ssa.aa eam as mym as rscs®ea��afficss:a=�T=='�=aaamsw srs asc'aTsa <br /> 4 <br />