Acrolein - problem with prepare standard solution

Discussions about sample preparation: extraction, cleanup, derivatization, etc.

2 posts Page 1 of 1
Hello everyone!

I'm currently working on a new (for my company) method of quantifying acrolein by GC-FID. I have a big problem with the appropriate weight of the standard. According to the article, I should add the right amount of acrolein to the CS2 flask. I bought certificate acrolein standard with a high purity (99.9%) and according to my company's instructions for the implementation of the standard of other chemicals, I measure the weight of the flask with CS2 and add the acrolein (using a glass syringe). But I did notice a large weight difference, often negative. I tried to cool the syringe but nothing has changed.

Does anyone have problem with acrolein like me? Maybe you have some advice?
Acetaldehyde presents a similar problem. What I do, is put some of the solvent in my volumetric flask (say 25 mL flask). I then tare the flask (no stopper) containing the solvent on my balance. I add a drop or 2 (a mass I'm certain I can measure accurately) to the solvent and measure the mass gain. Now, the acetaldehyde is dissolved in the solvent and when I dilute to the mark, I know the concentration. I can perform serial dilutions if I need to get the concentration smaller in my working standard.
2 posts Page 1 of 1

Who is online

In total there are 5 users online :: 0 registered, 0 hidden and 5 guests (based on users active over the past 5 minutes)
Most users ever online was 1117 on Mon Jan 31, 2022 2:50 pm

Users browsing this forum: No registered users and 5 guests

Latest Blog Posts from Separation Science

Separation Science offers free learning from the experts covering methods, applications, webinars, eSeminars, videos, tutorials for users of liquid chromatography, gas chromatography, mass spectrometry, sample preparation and related analytical techniques.

Subscribe to our eNewsletter with daily, weekly or monthly updates: Food, Environmental, (Bio)Pharmaceutical, Bioclinical, Liquid Chromatography, Gas Chromatography and Mass Spectrometry.

Liquid Chromatography

Gas Chromatography

Mass Spectrometry