Question

A 0.5g sample was digested with 10ml of Nitric acid solution

Then diluted to 1:10, 1:3 ration

What is the amount of Mg, Zn, in ppm if given the following: Show all calculation work please step by step

Mg (mg)	Zn(mg)	Fe (mg)	Sample weight (g)
0.05	0.0014	0.0017	0.5

Answer 1

The values 0.05 mg Mg and 0.0014 mg Zn corresponds to diluted solution.

The corresponding values in the original sample can be calculated by considering the dilution ratios.

For Mg

For Zn

This is the amount present in 0.5 g of sample

calculate the amount present in 1 g of sample

For Mg

For Zn

Convert mg/g in ppm

For Mg

For Zn