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  #1  
Old 03-31-2008, 12:37 PM
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Red face mg/km convert to ppm

how do i convert 50 mg/kg to ppm's when analyzing a lab test for lead?pls help me out! thanks
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  #2  
Old 04-01-2008, 06:39 AM
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Default Re: mg/km convert to ppm

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Originally Posted by Unregistered
how do i convert 50 mg/kg to ppm's when analyzing a lab test for lead?pls help me out! thanks
I'm confused as to what you have. 50 mg/kg is 50 ppm by weight, if that is what you want. Ppm may also be by volume or mole fraction, we'd need more info on the other part (that's not lead) if that's what you want.

But the title line says mg/km. For that we'd need to know what it is, like an engine burning leaded fuel, whether it is specified as ppm in the fuel or in the exhaust, fuel used per mile, etc. It is not just unit conversion but a moderately involved lab analysis.
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Old 09-28-2009, 05:42 PM
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Question Re: mg/km convert to ppm

What about converting mg/kg to ppm in lead paint?
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  #4  
Old 09-29-2009, 04:48 AM
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Default Re: mg/km convert to ppm

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What about converting mg/kg to ppm in lead paint?
Since there are 1 million milligrams in a kilogram, mg/kg is ppm on a weight/weight basis.
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  #5  
Old 03-19-2014, 04:10 PM
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Question Re: 6.20mg to km

How do I convert 6.20mg to kg???
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  #6  
Old 03-19-2014, 05:02 PM
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Default Re: 6.20mg to km

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How do I convert 6.20mg to kg???
1 million mg in 1 kg so
0.000 0062 kg
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