Dear members of this list, I need information about Canada, mainly Quebec. From INTERNET I get something but it is not enough for me. I am writting to you in...
Tequila2
tequila2@...
Nov 2, 2003 1:37 pm
1739
Hi all, I am in need of an Amersham SMART HPLC. Unfortunately Amersham have spopped production. Please email me if you have one for sale regards Martin Steel...
Martin Steel
Martin.Steel@...
Nov 4, 2003 6:38 pm
1740
Hi all I need info ( books, papers, methodas etc)about procedures and techniques for tensoactive and surfactants by LC. Thanks in advance Arthur Nascimento...
A Pre Column is used to do some sepration before your main analytical column, possibly using some switching scheme (ie Concentrate your sample by retaining it...
I may be wrong (hey it happens), but I have always thought that the two terms were interchangable. Tim ... __________________________________ Do you Yahoo!? ...
Anny, I has played around with this a little, but have not found anything better than water at elevated temperature. I am now using a Luna NH2 column instead,...
Dirk Holstege
dmholstege@...
Nov 5, 2003 11:22 am
1744
The difference between gurd column & Precolumn, in my opinion could be explained as under, in generalThe precolumn is the column which is attached before the...
Dear All The precolumn I described in my initial post that caused about 3.5% decrease in peak height compared to that without a precolumn is a sample filter or...
Dear members of list. I use a system GC/MS 5890/5970 to analyze semivolatiles compounds in water and soil samples. This analyze is audited and certified by...
7th November 2003 Dear colleagues, Would any of you know of an HPLC method for analysis of methanesulfonamide? TIA, Tony Herlt. ... Tony Herlt Research School...
Tony Herlt
herlt@...
Nov 7, 2003 12:49 pm
1748
Dear Scientists, I am currently searching databases, papers and methods to find a substitute of the surrogates I was using (Method EPA 8100 recommends the use...
Some people somewhere else suggested the use of deuterated analogues but EPA method 8100 doesn't recommend the use of deuterated analogues due to coelution...
... The source could be dirty and not functioning properly. Mass 441 is has a very small peak and may not be resolved from 442. Clean the source and run a...
Jan & Al
alekat@...
Nov 8, 2003 11:59 pm
1751
Monica, The deutero compounds are geared for GC-MS, where the mass differences overcome any chromatographic overlap. The same is true to a degree for the EPA...
I'm looking for Shimadzu GC/MS QP5000 or 5050 users for trading of information... Anyone with flavonoids or other standards available, please send me a...
Hi Looking for anyone who has a perkin elmer integral 4000 we have one and it loads the programme ok and the light ignites, the column heats and the pump is ok...
Dear members of the list, I need your help in order to get an article about a way to correct the background in AAS in a complicated sample which I am working....
Diego Delmonte
tequila2@...
Nov 13, 2003 3:07 am
1755
Dear Fabio, How is the autotune on this instrument? Do you have mass 502 with good abundance? It should be at least 2% of ion 219. If the autotune looks good, ...
Dirk Holstege
dmholstege@...
Nov 13, 2003 9:33 pm
1756
Fear Fabio, Have you tried the tune with just the mass spectrometer? If not, I would suggest that you should use a no-hole ferrule and block the GC-MS ...
Ashok Deshpande
ashok.deshpande@...
Nov 14, 2003 9:34 pm
1757
Is the tune set up to look for 441?. look on the web aglient has some paramaters listed for this coumpound but I don't have the address to foward. John...
My chromtogram of this surfactant (Alcohol Alkoxylate (Benzyl capped) ) keeps giving broad unresolved peaks. I have cleaned the column by running Acetonitrile...
Hello! I am a new member of this group. I am just stepped into the field of work.I am working with HPGC, even though , I want to know is there any adsoprtion...
=========================================================== THIS MONTH IN SEPARATIONS SCIENCE: =========================================================== ...
Greetings Chromatography Discussion Group, I need to isolate rubber (polystyrene-co-butadiene) from bitumen (asphalt). The rubber is fairly low molecular...
Walter.R.Dutton@...
Nov 19, 2003 2:50 pm
1762
You have many options, but one straightforward one is adsorption chromatography. I'd try it first on an alumina. Your rubber is pretty mom=polar, so dissolving...
Hi, Can anyone suggest me a method(GC) for detection of N,N dimethylaniline with 20 ppm limit quantifiaction?. If anybody used, pl.provide information. Thanks...
Greetings Chromatography Discussion Group, I Atit Patel is right now working in hplc method development lab in pharmaceutical company. we are facing problem to...
Hi, I am trying to rehabilitate an old Dionex 4500 IC and could use an operator/service manual for the autosampler unit ASM-3. Dionex purged all of their old...
hi all Iwant to know about separation and determination of erucamide (additive) in polypropylene by gass chromatography.( papers and books about this work) ...
HT300A also known as the EuroAS300 (LAS) Liquid Autosampler. We are looking for anyone interested in purchasing a brand new HT300A Liquid Autosampler. It is...
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