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Showing posts from November, 2012

Terahertz Spectroscopy at Eastern Analytical Symposium

Included in the 2012 Technical Program at Eastern Analytical Symposium & Exposition



Session track:
Diverse Industrial and Cultural Applications
Oral Session
Chair: Daryl P.Cobranchi, DuPont Washington Works


11:00  303  Terahertz Spectrometry: A New Frontier for Nano- and Pico-Scale Investigations
Anis Rahman, Aunik Rahman, Applied Research & Photonics


Session track:
Soft Surfaces and Interfaces
Oral Session
Chair: Andrew Teplyakov, University of Delaware


2:40  385  Terahertz Scanning Reflectometry: A New Frontier 
for Non-Invasive In-Depth Investigation,
Anis  Rahman, Aunik K. Rahman, Bozena B. MichniakKohn, Applied Research & Photonics




For more information or to request a copy of the presentation(s) contact Anis Rahman.

Stay tuned for information on the upcoming Terahertz Spectroscopy thematic programming in the Analytical Chemistry Division and co-sponsored by the Division of Small Chemical Businesses at the American Chemical Society Spring National Meeting.








Analysis of ppb Levels of VOC's and Hydrides by Gas Chromatography (GC) / Photoionization (PID)

Title: Analysis of ppb Levels of VOC's and Hydrides by Gas Chromatography (GC) / Photoionization (PID) Subject Category: Physical Sciences Session Selection:  AAAS General Poster Session  Slot: Sunday, February 17, 2013: 1:00 PM-5:00 PM #9780



Analysis of ppb Levels of VOC's and Hydrides by Gas Chromatography (GC) / Photoionization (PID)
Presenting author: Jennifer L. Maclachlan, PID Analyzers, LLC, Sandwich, MA and Jack N. Driscoll, PID Analyzers, LLC Sandwich, MA
Abstract Text:
The first commercial PID was introduced at the Pittsburgh Conference  in 1976 by HNU Systems. This detector was found to be 50-100 times more sensitive than the flame ionization detector (FID). The PID has  gone through several redesigns since then and has found a niche in environmental EPA 502,  602, 8040 etc. and trace (ppb) analysis with more than 15,000 units sold.
The fourth generation PID that has been developed has improved noise characteristics in the lamp circuit and in the electrometer. The high …

A Sensitive Method for the Measurement of Inorganic Arsenic in Apple Juice: Hydride Generation (HG)/Photoionization (PID)

Accepted for presentation in the Sunday Poster Session at AAAS Boston February 17, 2013 at the Hynes Convention Center Boston, MA


Title:  A Sensitive Method for the Measurement of Inorganic Arsenic in Apple Juice: Hydride Generation (HG)/Photoionization (PID)
Subject Category:  Environment and Ecology Session Selection:  AAAS General Poster Session Slot:  : Sunday, February 17, 2013: 1:00 PM-5:00 PM
Authors: Jack N. Driscoll1, PID Analyzers, LLC, 2 Washington Circle, #4, Sandwich, Massachusetts, US, 02563, United States 2. Jennifer L Maclachlan1 , PID Analyzers, LLC, 2 Washington Circle, #4, Sandwich, Massachusetts, US, 02563, United States 
Abstract Body:
In January of 2012, Consumer Reports found 10% of apple juice samples tested from five brands had total arsenic levels above the drinking water standard of 10 parts per billion. Most of that arsenic was inorganic arsenic, a known carcinogen. American apple juice is made from apple concentrate, a majority of which is imported from China. …

PID then and now

Thirty nine years ago, Jack Driscoll founded HNU Systems, Inc., commercialized the technology of photoionization and simultaneously introduced the world's first hand-held photoionizer.  The first photoionization detector (PID) application in 1973 was for leak detection of vinyl chloride monomer. 


The Model 102+ is a considerably upgraded replacement for our Model PI101, HW101, DL101, 101N, and ISPI101 (analyzer group photo above). It has enhanced features such as a faster response time, extended range, elimination of any moisture sensitivity, capability of having up to 4 sensors plus a ppb range, and improvements such as a library of compounds, pump and datalogging. 



The Model 102 Snap-On PID™ Photoionization Analyzer is a single piece, hand-held unit for the measurement of organic and inorganic species that can be ionized by the UV lamp (9.5, 10.6 & 11.7).     This includes the choice of one (1) Snap-On Module (9.5, 10.2, 10.6, 11.7 eV lamp), Operator's Manual, and Recharge…

Could it Be? Halloween without Snow?

Guest blog post by George RugerFor anyone familiar with last year's Halloween event at Dutchess Stadium courtesy of the Hudson Valley Renegades, you know that it was right after the first, and biggest, snowstorm of the region. 
Not to be outdone in 2012, this year Halloween was preceded by Hurricane Sandy, or as some called her, the Frankenstorm.  While the storm left quite a mess to clean up, there was still time to stop briefly and reflect on the true meaning of Halloween- CANDY, with a little bit of Chemistry mixed in.
The event hosted over 1,000 attendees.  We had kids all dressed up and ready to get candy from about 20 vendors.  Many of the vendors were sponsors of various games during the season.  The primary sponsor, TEG FCU, made it all possible for the event to be free of charge to the public. 
















There was face painting, pumpkin and Renegades hats decorating, food, and a bouncy house of course.  Plus happy kids getting loaded up on sugar and chocolate, and so were some of the …