TPH analysis with IR

Posted by on August 29, 2009, 6:23 pm

On Sat, 29 Aug 2009 16:13:01 -0500, The Daring Dufas

>Bolaleman wrote:

>>>>> - Show quoted text -
>>>> Yes I found some sources for technical grade but what we need for the
>>>> IR analysis needs to be high grade.
>>>> Sire, you sound like a snob.
>>>> (I'm too good for your lowly technical grade stuff- I use only high
>>>> grade).- Hide quoted text -
>>>> - Show quoted text -
>>> analytical chemistry is a "snobby business" - we only use the best
>>> stuff, yesssss
>>> Your best bet is to contact the manufacturers directly and see what they can
>>> do for you.

>>
>> I did this already and found Merck Chemicals as a supplier of this CFC
>> 113 (this is the alternative name for trichlorotrifluoro ethane) in a
>> grade that is adequate for IR spectroscopy (Uvasol).
>> We are already in the process of implementing an alternative method
>> for TPH analysis using hexane according to the EPA 1664 procedure. For
>> soil analysis we are validating a method that works with methanol as
>> extraction solvent instead of CFC 113 (turbidimetric determination of
>> hydrocarbons). The aim is being more independent on the Freons as
>> solvents as they are becoming more and more expensive and difficult to
>> purchase.

>We don't want to murder any more cute little ozones. Anyone
>who has ever looked into the eyes, er, electrons of one of
>those cute little ozones, could never again let any harm
>come to them.
>TDD

I hate ozones. One of them bit me when i was a child, and
I've hated them ever since.

NUKE THE OZONES !!!!!

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Posted by Stormin Mormon on August 29, 2009, 7:17 pm

I think that's why spring loaded electron traps were made
illegal? The trappers were letting those poor wittle ozones
starve to death.

--
Christopher A. Young
Learn more about Jesus
www.lds.org
.

> hydrocarbons). The aim is being more independent on the
> Freons as
> solvents as they are becoming more and more expensive and
> difficult to
> purchase.

We don't want to murder any more cute little ozones. Anyone
who has ever looked into the eyes, er, electrons of one of
those cute little ozones, could never again let any harm
come to them.

TDD

Posted by Hermann on August 29, 2009, 8:01 pm

Stormin Mormon wrote:

> I think that's why spring loaded electron traps were made
> illegal? The trappers were letting those poor wittle ozones
> starve to death.

Join the underground railroad. We are smuggling them out of the hands of
those tree hugging Nazi's. They make lousy lampshades anyway.

Posted by Don Ocean on August 29, 2009, 7:56 pm

Bolaleman wrote:

>>>> - Show quoted text -
>>> Yes I found some sources for technical grade but what we need for the
>>> IR analysis needs to be high grade.
>>> Sire, you sound like a snob.
>>> (I'm too good for your lowly technical grade stuff- I use only high
>>> grade).- Hide quoted text -
>>> - Show quoted text -

>> analytical chemistry is a "snobby business" - we only use the best
>> stuff, yesssss
>> Your best bet is to contact the manufacturers directly and see what they can
>> do for you.

>
> I did this already and found Merck Chemicals as a supplier of this CFC
> 113 (this is the alternative name for trichlorotrifluoro ethane) in a
> grade that is adequate for IR spectroscopy (Uvasol).
> We are already in the process of implementing an alternative method
> for TPH analysis using hexane according to the EPA 1664 procedure. For
> soil analysis we are validating a method that works with methanol as
> extraction solvent instead of CFC 113 (turbidimetric determination of
> hydrocarbons). The aim is being more independent on the Freons as
> solvents as they are becoming more and more expensive and difficult to
> purchase.

I note that this Poster is deep in South America/Santa Cruz

Posted by Bolaleman on September 3, 2009, 3:49 pm

> With out looking through my paper work I believe that is available
> And how much you are prepare to pay for it =A0(1L x 6) =A0Apx. $2,000.00 =

+ shipping

> availability and cost can change. Gov. regulatory applies!

> > Hi there,
> > I am looking for Trichloro-trifluoro-ethane to perform a TPH analysis
> > by infrared spectroscopy. Somebody knows where I can purchase this
> > freon? The sources I used do not sell this product any more as it
> > seems to damage the ozone layer.
> > What other alternative product could I use in stead?
> > Thanks,
> > Bolaleman
> > ---------------------
> >http://2ajobguide.com/wind_jobs_solar_renewable_energy_jobs.aspx- Hide q=

uoted text -

> - Show quoted text -

You might be right Old&Grunpy. I am still waiting for the cost
estimate but this is the price I was expecting also. As I mentioned
already in a previous post, we are in the process of implementing (an)
alternative method(s) for TPH analysis as with this high solvent costs
we are probably not competitive any more. Many thanks for your help
any way.

Bolaleman

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