A new technique for ppt levels of mercury in air & water

Accepted for presentation at #acsBoston on the American Chemical Society Division of Environmental Chemistry August 16-20 2015 at both SCI-MIX and ENVR posters ABSTRACT SYMPOSIUM NAME: SCI-MIX and General Posters

ABSTRACT SYMPOSIUM PROGRAM AREA NAME: [ENVR] Division of Environmental Chemistry

CONTROL ID: 2253367

PRESENTATION TYPE: Poster

TITLE: A new technique for ppt levels of mercury in air and  water

AUTHORS (FIRST NAME, LAST NAME): John N. Driscoll1, Jennifer L. Maclachlan1

INSTITUTIONS (ALL): 1. PID Analyzers, LLC, Sandwich, MA, United States.

ABSTRACT BODY:  Abstract: We reported recently that the photoionization detector (PID) with a 10.6 eV lamp responds to mercury (Hg) with detection limits of 10 ppb. The PID is a non-specific method for Hg since it also has a strong response to VOC’s. Other non-specific methods like UV absorbance and atomic fluorescence use a gold pre concentrator (GPC) to collect Hg by forming a Au/Hg amalgam at room temperature, purging to remove water and VOC’s then rapidly heating to 500oC to release the Hg. We have found that this same technique can be coupled to the PID to produce an analyzer with detection limits in the ppt range. For Hg in water, the hydride method can be used to reduce Hg+2 to form elemental mercury that is concentrated on a GPC and detected by PID. This method has low ppt detection limits. This presentation will describe the method and results in detail.

SCHB is your link to ACS networks and resources

ABSTRACT SYMPOSIUM NAME: Entrepreneurs' Poster Session & SCI-MIX

ABSTRACT SYMPOSIUM PROGRAM AREA NAME: [SCHB] Division of Small Chemical Businesses

CONTROL ID: 2274406

PRESENTATION TYPE: Poster

TITLE: SCHB is your link to ACS networks and resources

AUTHORS (FIRST NAME, LAST NAME): Mukund Chorghade1, Jennifer L. Maclachlan1, Joseph E. Sabol1, George W. Ruger1, Sharon V. Vercellotti1, Carlyn A. Burton1, Anis Rahman1, Keisha Hylton-Rodic1, David J. Deutsch1

INSTITUTIONS (ALL): 1. SCHB, Natick, MA, United States.

Abstract: As we celebrate our 35th year, SCHB member benefits include: free membership for the first year, a deeply discounted booth exhibit space at ACS national meetings, a listing on our website business directory, Discounted SOCMA membership, outstanding programming at ACS national, regional, and (started in 2012) partnerships with local sections for programming, webinars, and other events. At the heart of it all are amazing networking opportunities for established and start-up chemical businesses. Join us at our networking breakfast on Sunday morning August 16, 2015 at 7am (RSVP here: http://ow.ly/PzlqK ), Sunday lunch (RSVP here:  http://ow.ly/PzneR ), Monday lunch RSVP here: http://ow.ly/PzmoB and Tuesday  lunch RSVP here: http://ow.ly/PzmUA, and social event at the ACS Boston 250th national meeting, where the real business takes place! Connect with SCHB members and colleagues in the chemical enterprise at the SCHB technical sessions, Expo Booth, and social events. Follow SCHB throughout the year via social media.

Detection of ppb levels of arsenic in beers and wines

ACCEPTED for Presentation at the American Chemical Society 250th National Meeting in Boston August 16-20, 2015 on the Analytical Chemistry Division Program Track ABSTRACT SYMPOSIUM NAME: Advances in Analytical Separations, Organized by Jennifer Maclachlan

ABSTRACT SYMPOSIUM PROGRAM AREA NAME: [ANYL] Division of Analytical Chemistry

CONTROL ID: 2260931

PRESENTATION TYPE: Oral

TITLE: Detection of ppb levels of arsenic in beers and wines

AUTHORS (FIRST NAME, LAST NAME): John N. Driscoll1, Jennifer L. Maclachlan1

INSTITUTIONS (ALL): 1. PID Analyzers, LLC, Sandwich, MA, United States.

ABSTRACT BODY: Abstract: Government regulations have resulted in the discontinuation of many  arsenic compounds in the USA. Still, there may be leftover supplies of arsenical pesticides in farms  or in the fields that continue to represent residual risk. In fact, we have investigated a series of  California wines using hydride generation/gas chromatography/photoionization detection  (HG/GC/PID) for the analysis of trivalent and pentavalent arsenic compounds. We have found  that the majority of wine samples contain low (10 ppb) levels of trivalent arsenic but high  (hundreds of ppb) of pentavalent arsenic (presumably from the pesticides).  Although pentavalent arsenic is less toxic than trivalent arsenic, it is still a serious problem with  these high levels. We also found some beer samples with high levels of pentavalent arsenic.  We will discuss this new method for arsenic detection (HG/GC/PID) along with the results  for beer and wines.

Add photoionization detection capabilities to your GC

Here's a recent installation of our photoionization detector (PID) onto an HP 5890. The PID detector upgrade installation is commonly done by the end user but we had the opportunity to upgrade this client's equipment at our place. Learn more about our PID capabilities below or contact us for a quote using this link. For technical application questions, contact sales@hnu.com.