1522_book.fm Page 196 Thursday, November 13, 2003 9:58 AM m/z minutes 128 12 120 11 110 10 102 100 98 9 90 8 80 7 76 70 6 MS/MS spectrum of naphthalene. 60 5 50 50 4 40 © 2004 by CRC Press LLC 100% 75% 50% 25% 0% kCounts 100 75 50 25 Figure 5.10