Chapter 22, Problem 22.21P

(a)

Interpretation Introduction

Interpretation:

The structure of the ion at $\text{m/z}$ 304 and 182 has to be drawn.

Concept Introduction:

Mass spectrometry is an analytical tool that determines the mass to charge ratio of molecular ion. When solid, liquid, and gaseous substances are bombarded with high energy electrons, they ionize and meanwhile fragmented. The detector detects the charge to mass ratio of the ion and produces spectrum according to their abundance.

Nominal mass is the mass of molecular ion of most abundant isotope, where mass defect is not considered.

(b)

Interpretation Introduction

Interpretation:

Reason for intense peaks at $\text{m/z}$ 182 and 304 do not have isotopic partners at $\text{m/z}$ 183 and 305 have to be explained.

Concept Introduction:

Refer to part (a).

(c)

Interpretation Introduction

Interpretation:

The reason behind the one clean peak in chromatogram has to be explained.

Concept Introduction:

Refer to part (a).

(d)

Interpretation Introduction

Interpretation:

Atoms that are labeled with deuterium has to be determined.

Concept Introduction:

Refer to part (a).

(e)

Interpretation Introduction

Interpretation:

Use of $\text{H}{}_{\text{5}}\text{-cocaine}$ for the measurement of cocaine in blood has to be explained.

Concept Introduction:

Refer to part (a).