Tuesday, November 13, 2012

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. Inorganic Arsenic has been detected as AsH3 following hydride reduction and AA or ICP MS. The cost of these types of spectrometers is in the $60-200K price range.
Many labs would have to choose the older colorimetric methods but we have developed and modified the a simple and sensitive hydride generation-PID method for arsenic in water analysis at ppb levels (1) to work with food and juice. The system cost is a fraction of the $60K spectrometer price.



We will describe the modifications of a new method for arsenic in apple juice.




1.       Driscoll, JN and GA Cutter, “Total and Speciated Arsenic Compounds in Water by Photoionization and Gas Chromatography/PID”in "Toxic Trace Metal Remobilization & Remediation - A Geochemical Body of Work" to be published by the ACS (2012)

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