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.