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lawn fertilizer honey and TNT

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ja moran

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Jan 5, 2010, 10:09:05 PM1/5/10
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doing some quick research i see that there are many substances that can
cause false positives for TNT...

while its ok to have false positives once in a while, all the time is
like crying wolf too many times.. no one will believe if it is a real
positive...

not sure why airports dont have a chemist on call from a local college
or university. They have the knowledge and training to tell if something
is or is not dangerous.... and also know how to use analytical
instruments and other techniques to prove what something is

JOHN

hls

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Jan 8, 2010, 11:42:13 AM1/8/10
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"ja moran" <ana...@teranews.com> wrote in message
news:p9T0n.2611$%P5....@newsfe21.iad...

> doing some quick research i see that there are many substances that can
> cause false positives for TNT...

Simple tests for TNT just target the nitro group. This is a sensitive, but
unfortunately
nonspecific, color test.

To get a specific identification in a short period of time would require
rather
expensive equipment requiring skilled operators..

Lawn fertilizers and other products often contain nitrates which could
confuse a
simple test for "TNT". And some of these other products could be just about
as
dangerous as TNT or PETN.

It is a serious situation, and I hope our bumbling government can finally
get its
pants up and deal with it appropriately.

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DevilsPGD

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Jan 9, 2010, 1:18:47 AM1/9/10
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In message
<srhi-BA9B4C.2...@host81-136-209-74.in-addr.btopenworld.com>
Shawn Hirn <sr...@comcast.net> was claimed to have wrote:

>In article <xtSdnSM47v_3_drW...@giganews.com>,

>Just curious, but why exactly would any passenger need to carry lawn
>fertilizer on a flight?

It's not about carrying lawn fertilizer, but rather, passengers could
easily be exposed to lawn fertilizer shortly before heading for the
airport.

Scanning for explosives is easy, it's filtering out the false positives
that's the hard part.

Kurt Ullman

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Jan 9, 2010, 6:19:47 AM1/9/10
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In article <qq7gk5lchftij79lh...@4ax.com>,
DevilsPGD <Death...@crazyhat.net> wrote:

> Scanning for explosives is easy, it's filtering out the false positives
> that's the hard part.

I have some friends who work with explosives (mining and one cop bomb
tech) who have tested positive for residue using the wipe method. The
cop has by far the easier time of it (g).

--
To find that place where the rats don't race
and the phones don't ring at all.
If once, you've slept on an island.
Scott Kirby "If once you've slept on an island"

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