Sample derivatization for this technique is the primary lab application of the silicon reagents MSTFA and BSTFA. EPA lab procedures often use purge-and-trap to extract analytes for this technique from an area called the “headspace.” In a compound technique frequently employed in forensic analysis, (15[1])a mass analyzer replaces this technique’s usual thermal conductivity or flame (*) ionization detector. After sample injection, the oven temperature in this technique is gradually ramped (-5[1])or "programmed" to space out retention times. Helium, argon, and nitrogen are frequent mobile phases or “carriers” in this specific technique, which elutes compounds by (10[1])their boiling point. For 10 points, name this form of chromatography (-5[1])used to separate volatile (10[1])compounds in a mixture. (10[1])■END■