Saturday, July 18, 2015

Featured presentations by @pidgirl and @pidguy at #ACSboston 2015

Featured presentations by @pidgirl and @pidguy at #ACSboston 2015



See links below to access the presentation abstracts:


Sunday 8/16/15 Westin Boston Waterfront-Galleria 11am

Sunday 8/16/15 BC&EC, Room: 50 2:30pm

Monday 8/17/15 Renaissance BOS Waterfront Pacific Bllrm F 9:45am 

Monday 8/17/15 Renaissance BOS Waterfront Pacific Bllrm F 2:05pm

Monday 8/17/15 Renaissance BOS Waterfront Pacific Bllrm F 3:05pm

Monday 8/17/15 BC&EC Hall C 6pm-8pm 
HIST Track: Edwin Land and instant photography: An ACS National Historic Chemical Landmark

Wednesday 8/19/15 Renaissance BOS Waterfront Atlantic Bllrm I  10:25am

Wednesday 8/19/15 BC&EC Hall C 6pm-8pm

Friday, July 10, 2015

Analysis of metals at sub ppb levels by HG-GC-PID


ABSTRACT SYMPOSIUM NAME: Advances in Analytical Separations
ABSTRACT SYMPOSIUM PROGRAM AREA NAME: [ANYL] Division of Analytical Chemistry
CONTROL ID: 2213879
PRESENTATION TYPE: Oral
TITLE: Analysis of metals at sub ppb levels by HG-GC-PID
Pacific Blrm F - Renaissance Boston Waterfront
Publication Number: 164
*John Driscoll, pidguy@aol.com, *Jennifer Maclachlan, pidgirl@gmail.com. PID Analyzers, LLC, Sandwich, Massachusetts, United Statesm-2:25pm
AUTHORS (FIRST NAME, LAST NAME): John N. Driscoll2Jennifer L. Maclachlan1
INSTITUTIONS (ALL): 1. PID Analyzers, LLC, Centerville, MA, United States.
2. PID Analyzers, LLC, Sandwich, MA, United States. 
ABSTRACT BODY: 
Abstract: 
Hydride generation (HG), is a relatively simple method that has been used to clean up and concentrate samples for more than 40 years. It was used primarily in combination with atomic absorption (AAS) spectroscopy & a liquid nitrogen trap to measure down to low ppb levels. This instrumentation has been replaced by more sensitive and expensive equipment like graphite furnace AAS or ICP/MS for the detection of sub ppb levels of metals.
A number of papers have been published using gas chromatography- photoionization (GC/PID). This is a more sensitive method than AAS but a liquid nitrogen trap was still required. We have found recently that a capillary GC with an improved PID can replace the liquid nitrogen trap yet still provide sub ppb detection limits. The metals that we have been working with include: As, Pb, Cd, Se, Te, Sn, Fe…
We have also developed a new static headspace method that simplifies the normal hydride generator, reduces the analysis time and provides a modest improvement in sensitivity with a very wide operating range. These new developments will be described in this presentation.

Maclachlan named 2018 Outreach Volunteer of the Year by the Northeastern Section of the American Chemical Society

In an effort to recognize the immeasurable outreach efforts made by local section volunteers, the American Chemical Society's Committee ...