Peter, I'm afraid that using a photodiode matrix ( or any other
photodiodes ) will
not gave you enough sensitivity. This family of spectrometers are called
here "flame spectrometers" All of them have special detectors like
photomultipliers are. Take a look at Hamamatsu catalog ( I presume they
have also a site ) If we talk about same thing, these spectrophotometers
are used for ppm detection of heavy metals in liquids ( most frequently in
water)


Vasile


On Thu, 1 Mar 2001, Peter L. Peres wrote:

> Matt, thank you for the answer, but buying an optical assembly is out of
> the question. I'll probably use a grating and a few photodiodes at fixed
> positions to try and get an idea. I'll likely use 4 photodiodes and a
> 16C711 (which has four A/D channels) for this testing, maybe the fourth
> will analyze the whole spectrum (sans grating) for reference. Thank you
> for the literature pointers, I will look into this.
>
> Peter
>
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