Question

6) MALDI cluster masses: Assume that your substrate M shows a peak at an m/z ratio of 201 for the [M+H]+ pseudomolecular ion. (A) Determine the m/z value for the following ions that might also be observed, then (B) sketch a mass spectrum that contains equal amounts of each of the ions (i – v), along with the pseudomolecular ion, in the m/z range 0-600. Label each peak with its ion formula. i) [M2+H]+ ii) M2+ iii) M22+ iv) M2+ v) M3+

Answer 1

(A) Given, substrate [M7 shows a peak at an myz = 201 for [MAH] Pseudomokeularion, - Molenler of weight of substrate=200 Then the anſz value fort, (iI M, +H7+ - (200* 2)+1 T 401 (W) [ M24] - (200,-2)199.99 ü) [M,'] = (2012) -2,318- 199 (iv) Met] - Cu [Mat] = (200x 3) – 1 poot sketch of the man spectoum is as follows - (iv) ruty (2002) - ī = 399 3599 intensity, [M+4+] 0 100 200 30 ao 500 600 Mass (m/z)