avatar: ik
2 posts
Replied to ik's post on October 12th, 2012

When performing analysis of alkali and alkaline earth metals, I can't get my calibration curve. The reason is that absorbance of my blank solution is much higher than absorbance of my standard solution (absorbance of standards get negative values).

I don't have this problem when performing analysis of transition metals, only alkali and alkaline earth metals.

I would like to ask if anybody ever had similar problem and how can I solve it.

I use PerkinElmer Atomic Spectroscopy standards and as a blank solution I use 1% nitric acid.