Natural Science Forum / Chemistry / Analytical Chemistry / October 2006

HI ,EVERYDODY,
I AM A MASTER OF PHARMACY, I WANT TO GO TO CANADA FOR A PH.D IN
NANLYTICAL CHEMSTRY, ANY OPINION WILL BE GREATLY APPRECIATED. THANKS.

I am a 16 Yr  chemistry student, and I am doing a chemistry research
project,
entitled "the relationship between cost and effectiveness of solid
laundry

I need some help in developing a HPLC method using a fluorescence
detector.
In the current HPLC method am I measuring 4-methylsalicylic acid and
5-methylsalicylic acid with a UV-detector at 308 nm, as this is close

Hello people.... I need to know goods references on literature, books,
that
the point is Bonds, structures and molecular vibrations, mainly in
organic

Hello everybody! I just joined this group and I'm pleased to meet
everybody.
I'm currently using the HPLC to analyze vitamins and preservatives in
food.

You can simulate the effects of over 10 electrode geometries.
Currents at different electrode geometries are different as their diffusion
models are different. By keeping the same area of the electrodes, the peak
current at the cylindrical electrode is larger than the peak ...

Got a nearly philosophic question about the use of internal standards.
Hope somebody are able to help.
Say I'm running a lot of samples on a HPLC system and I'm using an
internal standard. Because of great variation in the injection volume

Hello people I've been working with wastes from  ether synthesis and,
and into liquid waste there CH3CH2SO4H, H2SO4 and how there Sulfuric
acid I could have there C2H2 or a C2H2O , I 'd     pH  - 1 so I thought
, I added  NaOH 10% until change the acid scene turn to pH 11 so I was

 I do not know ChemStation but was asked to process report (csv) file
at the end of each run. I have done a program to process the report but
I need a way to call my program from Chemstation (automatically) and
open the report.

I have come across different eqns to correct for inner filtering effects
in fluorescence spectroscopy:
1) Icor = Iobs * 10^(Aem/2 + Aex/2)
2) Icor = Iobs / (10^-Aem/2 + 10^-Aex/2)