Convert 20 µg/dl pb in blood to ppm. assume density of blood is 1 g/ml

- 0.0002 ppm

Solution:- 1 ppm is one mg of solute per liter of solvent or one kg of solvent.

It asks to convert pb in blood to ppm. density of blood is .

Let's convert micrograms to milligrams and also calculate the mass of blood from it's given density. The set up could be made using dimensional analysis and doing unit conversions as:

First the set up for the conversion of micrograms of Pb to milligrams:

=

Now, the set up for converting dL of blood to kg using it's given density and unit conversion from dL to mL as:

= 0.200 ppm