Natural Science Forum / Chemistry / Analytical Chemistry / June 2007

Anyone help me on given question.
i want to calculate p2o5 % of 85% H3PO4.
Please give me solution to above question.
Thanks

I'm performing emission scans on some unknown organic mixtures at an
excitation wavelength of 248nm. In some of the spectra, there appears to
 be a peak at 620nm. Since peaks beyond the 2nd order raman are seldom
reported, I wonder if this signal originates from organics or ...

i am new to gc analysis can any one suggest me a method for
organochlorine and organophosphorous pesticides using gc

i would appreciate your answers on my problem about icp-ms.
for icp-ms, we dissolve samples on some kinds of digestion solutions
in which soluble metals are already in ionic forms (am i right..?).
what happnes to those ions when they are atomized/ionized in plasma

Need Help - Name of Chemicals Used in Water Hardness Test Kits -
Buffer + Calmagite + EDTA type
=============================================
I live in a country where Water Hardness Test Kits (smilar to

Using teflon lined stainless steel cylinders to sample high purity ethylene
I was surprised to find that the ethylene is reacting to produce ethanol in
ppm levels.    If I sample the same ethylene gas with a non teflon lined
cylinder I find zero ethylene.  Can anyone out there ...

Plastic wastes take-up sizable portions of recycled wastes; that
companies handling scrap paper for recycling have to devote efforts to
separate plastics from scrap paper streams. In order yield recyclable
paper fiber that has good economic value (as well as recycling