Chapter 21, Problem 21.AE

Interpretation Introduction

Interpretation:

A standard addition graph has to be prepared to find the concentration of $\text{Li}$ and its uncertainty in the pure unknown.

Explanation of Solution

The $\text{Li}$ standard contained $\text{1}\text{.62}\text{μg}\text{Li/mL}$.

Graph, that has intensity against the concentration of standard that is added has x intercept of $0.162\pm 0.005\mu \text{g/mL}$.  As the sample is diluted ten times, the original concentration will be $1.62\pm 0.005\mu \text{g/mL}$.

Figure 1