Conversion question

[The Detective]

How to convert 120 micrograms/ml to ppb? The answer is 120000ppb

Thanks 

[vea]

Hey guys, kinda off topic but what "billion" do we use in Australia?

In the UK 1,000,000,000,000 is a billion while in the US 1,000,000,000 is a billion.
I have been meaning to find this out for years...

Thanks and sorry for hijacking your thread detective (though it kinda is relevant)

[jasoN-]

1,000,000,000 is 1 billion
1,000,000,000,000 is 1 trillion

Anyways
1 μg/kg = 1 ppb       (μg = microgram)
so 1 μg/L = 1ppb
    0.001 μg/mL = 1ppb

ratios:
120 μg     = x ppb
0.001 μg   = 1 ppb
x = 120/0.001 = 120000 ppb

[VivaTequila]

Sorry to go offtopic, but how does %w/w work?

If you say you have 70g/100g of NaCl in a solid, then is that 70g of NaCl to 100g of (non NaCl) solid or 70g of NaCl in 100g of solid (meaning 30g of non NaCl solid)?

[Greatness]

%w/w means grams per 100 grams.
If yuo have 5% of Fe in a sample then there is 5g of that within 100g (so there is 95g of other substances). Im think thats what it means.

[schnappy]

Sorry to go offtopic, but how does %w/w work?

If you say you have 70g/100g of NaCl in a solid, then is that 70g of NaCl to 100g of (non NaCl) solid or 70g of NaCl in 100g of solid (meaning 30g of non NaCl solid)?

In every 100g of sample, there is 70g NaCl.

[VivaTequila]

Thanks for confirming schnappy +1

Assuming same for %v/v, and %w/v?

[cohen]

http://uppit.com/0uvbw5p7e747/Ways_of_expressing_concentration.docx

Here's a sheet I made, It contains the different types of concentrations, and how to convert them (I didn't write anything relating to PPB, but i'll update it when i can be bothered )