How is ppm defined?
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I’d like to ask how to convert ppm to milligrams per liter; no formulas needed. What is the value in milligrams per liter for 50 ppm of hydrogen sulfide? It would be best to provide a detailed calculation process
1 PPM = one part per million. It is necessary to convert the units to be the same; it’s not possible to directly calculate PPM using milligrams and liters – first, determine the weight of one liter.
PPM is generally not written in uppercase.
Reply 1# 281324066 ppm means one part per million; it has no unit. A simple calculation shows that the hydrogen sulfide content is 75.89 mg/Nm3
Reply to 1# 281324066: It can be calculated using the principle of mass balance! You can find it by searching on Baidu!
PPM means one part per million, and it can be understood in the same way as “%”, which refers to a certain percentage. For example, 0.05 means 5%, or 50,000 ppm. Don’t think of it as a unit; think of it as a ratio, and that will make it easier. You are referring to 50 ppm of hydrogen sulfide; converting this to milligrams per liter: the molecular weight of hydrogen sulfide is 34. Since 1 mg/L equals mg/kg/1,000,000 L, which in turn is equal to m³/1,000, the unit in international units becomes kg/(m³×1,000). As it is a ratio, it’s possible to standardize either the mass or the volume. Calculate it yourself; be active in participating
My result is 75mg/Nm3 x M×22.4 to get the volume; at standard atmospheric pressure, 1 Nm3 is equal to 50 ppm, so using this conversion, X=75mg/Nm3. This is incorrect; please do not reply
What was said earlier is very good. I’d like to add that usually, each liter of water contains certain solutes such as hydrogen sulfide, ammonia, carbon dioxide, etc., but it can be considered that one liter of water equals one kilogram. 50 ppm of hydrogen sulfide means that there is 0.05 g of hydrogen sulfide in one kilogram of water, or 0.05 g/L. Or A g/L=1000A ppm.
What was said earlier is very good. I’d like to add that usually, each liter of water contains certain solutes such as hydrogen sulfide, ammonia, carbon dioxide, etc., but it can be considered that one liter of water equals one kilogram. 50 ppm of hydrogen sulfide means that there is 0.05 g of hydrogen sulfide in one kilogram of water, or 0.05 g/L. Or A g/L=1000A ppm.
10 to the power of minus 6 mol/mol; 50 ppm of hydrogen sulfide means that there are 50*10-6 mol of hydrogen sulfide per mol of the mixed gas. 1ppm=0.00139mg/L
I know it’s one in a million; the units should be consistent