Identifying an element from Emission Spectrum

[ness9660]

Using data collected from a spectrometer, with a diffraction grating of 100 lines/mm, I have collected a set of data. From this I have calculated wavelengths for the 1st and 2nd order lines of the three brightest visible colors, which were Blue/Violet, Green, and Orange.

To complete my lab I am required to identify the element that produced the emission spectrum, however I am really unclear how to go about this.

So, I am left with wavelengths for 1st and 2nd order lines of each color, I've tried to compare this to lists of wavelengths for various emission spectrums I've found, but I see no way to take these wavelengths and positively identify my element. Most lists of wavelengths I find fall within the same range. What is the clear cut method that I am missing to correlate my wavelengths to another set given so as to identify my element?

 

[inha]

is the spectrometer's resolution too poor or something? in general one should be able to identify elements pretty easily.

 

[ness9660]

is the spectrometer's resolution too poor or something? in general one should be able to identify elements pretty easily.

I can't really find any wavelengths to compare my calculated wavelengths to, just pictures of spectra, you can't make a positive id on that.

e.g.

I have a blue/violet 1st order to the right of center, wave length=348.99, and to the left of center=523.359.
Looking at this list:http://physics.nist.gov/PhysRefData/Handbook/Tables/nitrogentable2.htm for nitrogen, how can I even relate my 1st and second order measurements to the nitrogen table?