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Na contents measure using Atomic absorption spectrometry
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Borek
science forum Guru Wannabe


Joined: 02 May 2005
Posts: 157

PostPosted: Thu Mar 31, 2005 8:31 am    Post subject: Re: Is it possible to regen Ferric Chloride at home? Reply with quote

On Wed, 30 Mar 2005 18:36:02 -0800, Marc Brutschy <brutschy@comcast.net>
wrote:

Quote:
of an hour or so to form insoluble ferric hydroxide, FeO(OH). That
leaves H+ and Cl- which, when you think about it, is a solution of
hydrochloric acid. That's what is doing the etching of the brass.

You are completely wrong. Hydrochloric acid is not able to dissolve copper.

At this moment I stopped reading so no comments on the rest of the post.

Best,
Borek
--
http://www.chembuddy.com - chemical calculators for labs and education
BATE - Base Acid Titration and Equilibria
program for pH calculations
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ra_du
science forum beginner


Joined: 01 Apr 2005
Posts: 3

PostPosted: Fri Apr 01, 2005 8:55 am    Post subject: Re: Is it possible to regen Ferric Chloride at home? Reply with quote

Fe(3+)+3A(-) + 3Cl(-) + H3O(+)--->FeCl3(aq) (the rest is not so important)
a simple method to obtain FeCl3
A--- HO(-)
A--- CH3COO(-)
A--- NO3(-)
the Fe(OH)3 is an precipitate ( yellow) ( see Ks and Sm value)
Fe(CH3COO)3 is yellow
Fe(+) ions are yellow (all)
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Borek
science forum Guru Wannabe


Joined: 02 May 2005
Posts: 157

PostPosted: Fri Apr 01, 2005 1:44 pm    Post subject: Re: Is it possible to regen Ferric Chloride at home? Reply with quote

On 1 Apr 2005 02:55:07 -0800, ra_du <rdprjbn@yahoo.com> wrote:

Quote:
Fe(3+)+3A(-) + 3Cl(-) + H3O(+)--->FeCl3(aq) (the rest is not so
important)
a simple method to obtain FeCl3

The problem with etching bath is that it contains Fe(2+) that have
to be oxidized to Fe(3+). Where is oxidation step in your post?

Borek
--
http://www.chembuddy.com - chemical calculators for labs and education
BATE - Base Acid Titration and Equilibria
program for pH calculations
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ra_du
science forum beginner


Joined: 01 Apr 2005
Posts: 3

PostPosted: Sat Apr 02, 2005 6:31 am    Post subject: Re: Is it possible to regen Ferric Chloride at home? Reply with quote

is very easy to oxidate Fe(2+) to Fe(3+)
Fe(3+) +e(-) --> Fe(2+) |x2 E(0)=+0.77 V
1/2O2 +2H(+) +2e(-)-->H2O E(0)'=1.23V at pH=0
--------------------------------------------
2Fe(2+) + 1/2O2 + 2H(+)-->2Fe(3+) +H2O E(0)-E(0)'=0.46
as you can see 0.46 > 0.20 (V) so the proces can take place very easy
if you have Fe(2+) in your system just open it and let the 02 to do his job
good luck!
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Farooq W
science forum Guru Wannabe


Joined: 25 Mar 2005
Posts: 240

PostPosted: Sat Apr 02, 2005 10:53 am    Post subject: Re: Is it possible to regen Ferric Chloride at home? Reply with quote

ra_du wrote:
Quote:
is very easy to oxidate Fe(2+) to Fe(3+)
Fe(3+) +e(-) --> Fe(2+) |x2 E(0)=+0.77 V
1/2O2 +2H(+) +2e(-)-->H2O E(0)'=1.23V at pH=0
--------------------------------------------
2Fe(2+) + 1/2O2 + 2H(+)-->2Fe(3+) +H2O E(0)-E(0)'=0.46
as you can see 0.46 > 0.20 (V) so the proces can take place very easy
if you have Fe(2+) in your system just open it and let the 02 to do
his job
good luck!

Indeed the reaction is spontaneous at pH =0 as shown by your data, but
you can never predict how long would it take for the reaction to go to
completion, may be one nanosecond, one day, or even one year.
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George Orwell
science forum beginner


Joined: 04 May 2005
Posts: 49

PostPosted: Sun Apr 03, 2005 2:28 am    Post subject: Re: Shimadzu to Renounce Pacifism Reply with quote

Poster <poster@ai5.net> wrote in news:424B8885.46DDF500@ai5.net:

Quote:
why are you posting this here. no relevance whatever.


Chris Gaylor wrote:


Mark Kukucka, who was once a Shimadzu employee, was fired for his
incompetence and blatently obvious mental imbalance more than ten
years ago. Since then, he has launched himself on his racist
vendetta to smear the name of Shimadzu and its various US and
Japanese executives.

Paradoxically, he adopts the names of these managers when making his
posts. So, any time you see a post here under the name of Chris
Gaylor, Shigehito Hattori, or anyone else connected to Shimadzu, you
can be sure it old wacko Marie up to his usual tricks.

Probably needs to get his prescription refilled again.


Hey Markie - is this you? Did you actually con someone into giving
you a job? Do your managers know what you do in your spare time?
How long before we start seeing the Belfort Instrument Company smear
campaign?

Mark Kukucka
National Sales & Marketing Manager
Belfort Instrument Company
727 South Wolfe Street
Baltimore MD 21231

410-342-2626
410-342-7028
digiwx@belfortinstrument.com
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Shigehiko Hattori
science forum addict


Joined: 03 May 2005
Posts: 56

PostPosted: Sun Apr 03, 2005 9:10 pm    Post subject: Re: Shimadzu QP2000 / QP5000 File Formats.... MORE s**t-madzu! Reply with quote

Here you go... this customer has a Shimadzu
Mass Spec and calls Shimadzu USA Tech Support
to ask about the QP2000/QP5000 file formats.

He's then told to contact Japan's Tech Support!

CAN YOU IMAGINE? (the Mass Spec folks from
Agilent, Bruker, Finnigan, JEOL, Varian, Waters
have got to be laughing their asses off!)

Is this Shimadzu's way of taking care of
customers and their accompanying problems
OR just passing the buck? What part of their
corporate motto "Solutions for Science" does
this SNAFU fall under?

SOMEBODY PLEASE TELL US THIS IS A BAD JOKE!

Doesn't Shimadzu have tech support for their
QP2000/QP5000 Mass Specs anywhere in the USA?

FOR A CUSTOMER, THIS HAS GOT TO BE A NIGHTMARE!

How can you sell a product in this country and
expect customers to call half a world away for
tech support?

SOMEBODY PLEASE WAKE ME UP FROM THIS BAD DREAM!

Some people (eg. George Orwell, Terry Adams)
think we script this stuff....

NOTHING COULD BE FARTHER FROM THE TRUTH!

Couldn't help but notice.... the original poster
(Richard Opsal) has not received any follow-up
responses over the past month....

Probably tells prospective customers all they need
to know.... virtually nobody else owns this AWFUL
s**t-madzu Mass Spec product offering.

WHY WOULD YOU WANT ONE IN YOUR LAB?


s**t for Science since 1875


For more about s**t-madzu:

http://shimadzu.is-crazy.com
http://shimadzu.home-page.org
http://shimadzu-sux.iscool.net



Quote:
From: AdronRBO <a...@adronsystems.com
Newsgroups: sci.techniques.mass-spec
Subject: Shimadzu QP2000 / QP5000 File Formats
Date: 2 Mar 2005 10:57:04 -0800


Quote:
Does anyone have the file formats for the Shimadzu QP2000 or
QP5000 GC/MS files?

I've spoken with Shimadzu USA technical support about this topic.
They've redirected me to Japan's tech support.

Thanks,

Richard Opsal
Adron Systems
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Shigehiko Hattori
science forum addict


Joined: 03 May 2005
Posts: 56

PostPosted: Sun Apr 03, 2005 9:29 pm    Post subject: Re: Shimadzu QP2000 / QP5000 File Formats.... MORE s**t-madzu! Reply with quote

BEFORE YOU EVEN RESPOND O'Georgie boy....

Me thinks George Orwell is M Kinstlinger (mkinstlin...@aol.com)
Michael Kinstlinger just got canned by Shimadzu a few months ago!

Michael Kinstlinger (former Shimadzu employee as of 1-10-2005)
mkinstlinger (at) aol (dot) com

What happened Michael.... were you discovered???????????
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George Orwell
science forum beginner


Joined: 04 May 2005
Posts: 49

PostPosted: Sun Apr 03, 2005 9:59 pm    Post subject: Re: Shimadzu QP2000 / QP5000 File Formats.... MORE s**t-madzu! Reply with quote

"Koichi Tanaka" <shimadzu_usa@yahoo.com> wrote in
news:1112570973.138418.282300@o13g2000cwo.googlegroups.com:

Quote:
BEFORE YOU EVEN RESPOND O'Georgie boy....

Me thinks George Orwell is M Kinstlinger (mkinstlin...@aol.com)
Michael Kinstlinger just got canned by Shimadzu a few months ago!

Michael Kinstlinger (former Shimadzu employee as of 1-10-2005)
mkinstlinger (at) aol (dot) com

What happened Michael.... were you discovered???????????


As with most things that vomit up from your keyboard, you're wrong
again, Markie. Since you were canned so long ago, I guess your
inadequacies were much more apparent to Shimadzu. Me thinks you
don't think so well.

And have we discovered you?
Do your managers know what they've gotten themselves into?

Mark Kukucka
National Sales & Marketing Manager
Belfort Instrument Company
727 South Wolfe Street
Baltimore MD 21231

410-342-2626
410-342-7028
digiwx@belfortinstrument.com


Have a great day, Markie. Sell lots of those air traffic control
systems before you get canned again. The more your reputation gets
around, the harder it will be for you to find the next job.

And so long as you continue to pollute the newsgroups with your
racist diatribes, so we'll continue to let the world know your true
identity. With any luck, after Belfort cans you, you may never
work again. You can die a poor, twisted, and bitter man.

Your buddy,

George
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Shigehiko Hattori
science forum addict


Joined: 03 May 2005
Posts: 56

PostPosted: Sun Apr 03, 2005 10:04 pm    Post subject: Re: Shimadzu QP2000 / QP5000 File Formats.... MORE s**t-madzu! Reply with quote

BEFORE YOU EVEN RESPOND O'Georgie boy....

Me thinks George Orwell is M Kinstlinger (mkinstlin...@aol.com)
Michael Kinstlinger just got canned by Shimadzu a few months ago!

Michael Kinstlinger (former Shimadzu employee as of 1-10-2005)
mkinstlinger (at) aol (dot) com

What happened Michael.... were you discovered???????????



Koichi Tanaka wrote:
Quote:
Here you go... this customer has a Shimadzu
Mass Spec and calls Shimadzu USA Tech Support
to ask about the QP2000/QP5000 file formats.

He's then told to contact Japan's Tech Support!

CAN YOU IMAGINE? (the Mass Spec folks from
Agilent, Bruker, Finnigan, JEOL, Varian, Waters
have got to be laughing their asses off!)

Is this Shimadzu's way of taking care of
customers and their accompanying problems
OR just passing the buck? What part of their
corporate motto "Solutions for Science" does
this SNAFU fall under?

SOMEBODY PLEASE TELL US THIS IS A BAD JOKE!

Doesn't Shimadzu have tech support for their
QP2000/QP5000 Mass Specs anywhere in the USA?

FOR A CUSTOMER, THIS HAS GOT TO BE A NIGHTMARE!

How can you sell a product in this country and
expect customers to call half a world away for
tech support?

SOMEBODY PLEASE WAKE ME UP FROM THIS BAD DREAM!

Some people (eg. George Orwell, Terry Adams)
think we script this stuff....

NOTHING COULD BE FARTHER FROM THE TRUTH!

Couldn't help but notice.... the original poster
(Richard Opsal) has not received any follow-up
responses over the past month....

Probably tells prospective customers all they need
to know.... virtually nobody else owns this AWFUL
s**t-madzu Mass Spec product offering.

WHY WOULD YOU WANT ONE IN YOUR LAB?


s**t for Science since 1875


For more about s**t-madzu:

http://shimadzu.is-crazy.com
http://shimadzu.home-page.org
http://shimadzu-sux.iscool.net



From: AdronRBO <a...@adronsystems.com
Newsgroups: sci.techniques.mass-spec
Subject: Shimadzu QP2000 / QP5000 File Formats
Date: 2 Mar 2005 10:57:04 -0800


Does anyone have the file formats for the Shimadzu QP2000 or
QP5000 GC/MS files?

I've spoken with Shimadzu USA technical support about this topic.
They've redirected me to Japan's tech support.

Thanks,

Richard Opsal
Adron Systems
Back to top
George Orwell
science forum beginner


Joined: 04 May 2005
Posts: 49

PostPosted: Sun Apr 03, 2005 10:54 pm    Post subject: Re: More Markie blather Reply with quote

"Koichi Tanaka" <shimadzu_usa@yahoo.com> wrote in
news:1112570099.754266.17050@z14g2000cwz.googlegroups.com:

Quote:
BEFORE YOU EVEN RESPOND O'Georgie boy....

Me thinks George Orwell is M Kinstlinger

What happened Michael.... were you discovered???????????



What would happen, Markie, if we used Belfort's "Contact us" page
to forward some of your internet postings?

Would that force you into some uncomfortable explanations to your
management?

And, once again, Markie, NO, I'm not Michael Kistlinger, not matter
how much you'd like me to be. Though you're so deluded about so
many things, I doubt anyone will convince you otherwise. My
sympathies to Michael.

Your enemies are legion, old Markie boy, and aren't limited to your
colleagues at Shimadzu. Some of us are really tired of you and
your rants, and would be happy to "out" you to whomever might be
interested. Maybe you'll start to realize that there's a price to
be paid for your racist vendetta.

Now that we know where you work, we're gonna out you there as well.
Maybe Belfort Instrument Company will be embarassed to know the
truth about your spare time activities.

For those of you new to the game, "Koichi Tanaka" and "Shigehiko
Hattori" are the Internet pen names of none other than:

Mark Kukucka
National Sales & Marketing Manager
Belfort Instrument Company
727 South Wolfe Street
Baltimore MD 21231

410-342-2626
410-342-7028
digiwx@belfortinstrument.com

Drop him a line, tell him how much you appreciate his postings to
the science newsgroups.

George
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Shigehiko Hattori
science forum addict


Joined: 03 May 2005
Posts: 56

PostPosted: Mon Apr 04, 2005 1:51 pm    Post subject: Shimadzu QP2000 / QP5000 File Formats.... MORE s**t-madzu! Reply with quote

Oh Georgie boy (or is it Georgie girl)

Why do you keep changing the subject?

Are you having trouble with the truth? AGAIN?

Why don't you contact Richard Opsal personally?
He posted the comment about Shimadzu USA
re-directing him to Japan for tech support
for help with his s**t-madzu QP2000/QP5000.

What didn't you understand?

BTW: As I've said before, I'm not Mark Kukuka!

But please feel free to contact him if you're
so inclined or hell bent like George Orwell!

And keep posting cause somebody is going to catch up with you!

You might be able to run, but you can't hide!



George Orwell wrote:
Quote:
"Koichi Tanaka" <shimadzu_usa@yahoo.com> wrote in
news:1112570099.754266.17050@z14g2000cwz.googlegroups.com:

BEFORE YOU EVEN RESPOND O'Georgie boy....

Me thinks George Orwell is M Kinstlinger

What happened Michael.... were you discovered???????????



What would happen, Markie, if we used Belfort's "Contact us" page
to forward some of your internet postings?

Would that force you into some uncomfortable explanations to your
management?

And, once again, Markie, NO, I'm not Michael Kistlinger, not matter
how much you'd like me to be. Though you're so deluded about so
many things, I doubt anyone will convince you otherwise. My
sympathies to Michael.

Your enemies are legion, old Markie boy, and aren't limited to your
colleagues at Shimadzu. Some of us are really tired of you and
your rants, and would be happy to "out" you to whomever might be
interested. Maybe you'll start to realize that there's a price to
be paid for your racist vendetta.

Now that we know where you work, we're gonna out you there as well.
Maybe Belfort Instrument Company will be embarassed to know the
truth about your spare time activities.

For those of you new to the game, "Koichi Tanaka" and "Shigehiko
Hattori" are the Internet pen names of none other than:

Mark Kukucka
National Sales & Marketing Manager
Belfort Instrument Company
727 South Wolfe Street
Baltimore MD 21231

410-342-2626
410-342-7028
digiwx@belfortinstrument.com

Drop him a line, tell him how much you appreciate his postings to
the science newsgroups.

George
Back to top
Aubrey McIntosh, Ph.D.
science forum beginner


Joined: 29 Apr 2005
Posts: 8

PostPosted: Fri Apr 29, 2005 1:19 pm    Post subject: Re: 'Sodium adducts' in MALDI-MS Reply with quote

sanlosinst@yahoo.co.uk wrote:


Quote:

Come on! There must be someone on sci.chem.analytical who can at least
tell me if there are theories as to why the analyte and cation stay
associated, or if it's simply not known. Someone please give me some
useful information.


It may be more useful to you to think of the ion-dipole interaction, and
to stop trying to imagine a 2 center - 2 electron bond.

Also, the phrase "ionization efficiency" hides the fact that this is not
always a dominant reaction, but often a minor side reaction.
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Erik van Loon
science forum beginner


Joined: 02 May 2005
Posts: 7

PostPosted: Mon May 02, 2005 5:45 pm    Post subject: Re: Extraction of vitamin D3 Reply with quote

The raw material vitamin D3, is coated. We weaken the vitamin lose in water
on pH=7 (add a little phosphate to buffer the pH) for 30minutes at 60
degrees Celcius and then add 50ml 1:1 acetone/THF and shake. Than we add
20ml ISTD-solution (4ml/l purified 1-phenyldecane in diethtylether) and
shake again.
Depending on the matrix, it can be useful to add an enzym when weaken the
vitamin.

With this method, we analyse vitamine A-D-E-K in mixtures.

Regards,

Erik


"Christelle Gu?guen" <christelle-g@voila.fr> schreef in bericht
news:18472dfe.0504110102.33298ed9@posting.google.com...
Quote:
Hi all!

I am working on the extraction of vitamin D3 from tablets. For the
moment, we are using hexane to extract this vitamin. However, results
are not very good. I would be grateful if anyone could give me
information (references, others solvents extraction?) to improve the
method.

Thanks in advance.

Christelle Guéguen
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Andrew Tweddle
science forum beginner


Joined: 08 May 2005
Posts: 16

PostPosted: Sun May 08, 2005 4:24 am    Post subject: Re: Mettler AE 163 Help (Need to open it up) Reply with quote

beavith wrote:

Quote:
On Sat, 9 Apr 2005 09:09:58 -0400, "david c" <none@none.net> wrote:


Hi,

I picked up an AE 163 cheap and it works well except it "loses" about .01 mg
(.00001 gm) every two seconds (in the 30 gm mode).

I'm wondering if there's a leaky capacitor that I can replace, but I can't
get the case open. It looks like there are screws I need to get to that are
under the glass floor of the weighing chamber.

It looks like I can get the glass floor out if I can remove the brass
retention clip that holds in the s.s. escutcheon surrounding the cone for
the weighing pan. And it looks like the plastic trim piece that holds the
front glass in at the bottom would have to come out. Also a trim piece at
the opposite side.

Anyone know how to remove these items without damaging them? Any and all
info would be greatly appreciated. BTW, I'm willing to pay for a copy of a
service manual if anyone has one.

TIA,
david



Mettler is no help?


Mettler have various user manuals on their site. They are easily

serviced without a manual and all the different models are vay similar
in design , so one service manual can easily be used on another model.

Good luck

Andrew
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Google

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