Acrolein - problem with prepare standard solution

Hi

Share article or preparation procedure to know cause...

Hi, the article is a Polish standard for the determination of acrolein in air sample. It's a bit old but still used. I only have a problem with preparing a solution with an acrolein concentration of 0.084 mg / ml. So, according to the laboratory procedure, I measure about 1 µl of pure acrolein and inject it into a 10 ml volumetric flask with 4-5 ml of CS2. 1 µl of acrolein should weigh about 0.000839 g. But in 3 out of 4 cases, I noticed a negative difference in weight. I couldn't make a repeatable concentration of the solution. Looks like if I inject acrolein it will evaporate right away or something

Hi, the article is a Polish standard for the determination of acrolein in air sample. It's a bit old but still used. I only have a problem with preparing a solution with an acrolein concentration of 0.084 mg / ml. So, according to the laboratory procedure, I measure about 1 µl of pure acrolein and inject it into a 10 ml volumetric flask with 4-5 ml of CS2. 1 µl of acrolein should weigh about 0.000839 g. But in 3 out of 4 cases, I noticed a negative difference in weight. I couldn't make a repeatable concentration of the solution. Looks like if I inject acrolein it will evaporate right away or something

U should prepare standard in glove box under fumehood..Then such problem will not come...

And 2nd things, drops from syringes should not touch flask inner layer..It should dropped in solution directly from syringd without touching inner layer of flask...

yes, I inject it directly to solution. About glove box, we don't have it and probably won't