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Showing posts from 2014

Separation of mercury from VOC’s and selective detection using gold film amalgamation and photoionization detection

Accepted for presentation at #ACSDenver 2015 on March 23, 2015:

PAPER ID: 2152487 
PAPER TITLE: “Separation of mercury from VOC’s and selective detection using gold film amalgamation and photoionization detection” 

DIVISION: [ANYL] Division of Analytical Chemistry
SYMPOSIUM: Advances in Analytical Separations 

Authors: J.N. Driscoll and J.L.Maclachlan, PID Analyzers, LLC Sandwich, MA USA

We used a sensitive but nonspecific photoionization detector (PID) with a 10.6 eV lamp to measure mercury that has an ionization potential of 10.43 eV. The PID responds to both mercury and VOC’s and the VOC’s have to be removed to make the technique specific for mercury. The chemistry of the gold/mercury amalgam makes this method specific for mercury and eliminates interference from VOC’s. This technique also concentrates the sample making the method sensitive to sub ppb levels. Mercury permeation tubes were used to generate levels from 0.02 to 1 ppm.
The method is applicable for b…

Wicked Sweet Science Cafe~It's how Cape Cod celebrated National Chemistry Week 2014

Candy chromatography with M&Ms

Originally they had planned to use the peanut butter ones, too. But since we all know that kids have a way of ingesting things they shouldn't (we were concerned about allergies) so they crossed it off  the sign and eliminated it from the experiment. 

Analysis of Natural Gas Composition and BTU Content from Fracking Operations

Accepted for presentation at Pittcon 2015
New Orleans, Louisiana March 8-12 2015

Abstract Number: 1370 - 5 Session 1370 - Advances in Energy Research: From Unconventional Fuels to Solar Energy
Day and Time: Tuesday, March 10, 2015, 03:05 PM
Room 240

Authors: Jack Driscoll and Jennifer Maclachlan, PID Analyzers, LLC

Significant shale deposits exist in 22 states including the Northeast states of Ohio, Pennsylvania, and New York Utah and Wyoming in the West; and gas-producing states such as Texas, Louisiana, Arkansas and Mississippi. The use of horizontal drilling and hydraulic fracking of shale has catapulted the US into the leading producer of natural gas in 2013.  Natural gas is bought or sold based on the quantity of energy delivered. The product of the concentration (determined by gas chromatography) and the heating value (BTU) determines the BTU content of the fuel. Although the natural gas from Marcelis shale is primarily methane, the composition can vary considerably from region to regio…