TPH analysis with IR

Posted by Bolaleman on August 25, 2009, 7:59 pm

> Bolaleman wrote:

> > On Aug 24, 12:46 pm, .p.jm.@see_my_sig_for_address.com wrote:

> >> On Mon, 24 Aug 2009 11:24:37 -0500, The Daring Dufas
> >>> Bolaleman wrote:
> >>>> 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
> >>> I'm surprised you couldn't Google it. Back in the early 70's I
> >>> was covered with the stuff on several jobs where I cleaned parts.
> >>>http://tinyurl.com/ntgs9a
> >>> TDD
> >> We kept it in 5 gallon cans, which we funelled into squeeze
> >> bottles, for cleaning computer parts.
> >> --
> >> Click here every day to feed an animal that needs you today
> >> !!!www.theanimalrescuesite.com/
> >> Paul ( pjm @ pobox . com ) - remove spaces to email me
> >> 'Some days, it's just not worth chewing through the restraints.'
> >> 'With sufficient thrust, pigs fly just fine.'
> >> HVAC/R program for Palm PDA's
> >> Free demo online atwww.pmilligan.net/palm/
> >> Free 'People finder' program now atwww.pmilligan.net/finder.htm-
> >> Hide quoted text -
> >> - Show quoted text -

> > Yes I found some sources for technical grade but what we need for the
> > IR analysis needs to be high grade.
> > Thanks for the repies!

> mmmmm - repies - I remember when my mom would bake repies - apple repies =

are

> the best!
> --
> Zyp- Hide quoted text -
> - Show quoted text -

sorry for the repies and the grammatical horrors :-)

Posted by Bolaleman on August 26, 2009, 10:13 am

> On Aug 24, 12:46 pm, .p.jm.@see_my_sig_for_address.com wrote:

> > On Mon, 24 Aug 2009 11:24:37 -0500, The Daring Dufas

> > >Bolaleman wrote:
> > >> Hi there,
> > >> I am looking for Trichloro-trifluoro-ethane to perform a TPH analysi=

> > >> 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
> > >I'm surprised you couldn't Google it. Back in the early 70's I
> > >was covered with the stuff on several jobs where I cleaned parts.
> > >http://tinyurl.com/ntgs9a
> > >TDD

> > We kept it in 5 gallon cans, which we funelled into squeeze
> > bottles, for cleaning computer parts.
> > --
> > Click here every day to feed an animal that needs you today
> > !!!www.theanimalrescuesite.com/
> > Paul ( pjm @ pobox . com ) - remove spaces to email me
> > 'Some days, it's just not worth chewing through the restraints.'
> > 'With sufficient thrust, pigs fly just fine.'
> > HVAC/R program for Palm PDA's
> > Free demo online atwww.pmilligan.net/palm/
> > Free 'People finder' program now atwww.pmilligan.net/finder.htm-Hide
> > quoted text -
> > - 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

Posted by Noon-Air on August 26, 2009, 12:19 pm

> > - 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.

Posted by Bolaleman on August 29, 2009, 11:11 am

> > > - 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.

Posted by The Daring Dufas on August 29, 2009, 5:13 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.

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

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TPH analysis with IR - Page 2