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Analysis of residual acrylamide in field crops

Análisis del Acrilamido Residual en Cultivos de Campo

Bologna, Loren S. and Andrawes, Fikry F. and Barvenik, Frank W. and Lentz, Rodrick D. and Sojka, Robert E. (1999) Analysis of residual acrylamide in field crops. Journal of Chromatographic Science. 37:240-244.

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Polyacrylamide (PAM) is a widely used product for a large number
of applications. Many of the emerging applications are in the area
of agriculture. PAM is blended with pesticides as a thickening
agent, added to irrigation water to minimize soil erosion, and used
as a medium for hydroponically grown crops. Although PAM is
stable and considered to be safe, residual acrylamide (AMD)
monomer is a neurotoxin and animal carcinogen. In this work,
residual AMD is analyzed in a variety of crops that were grown
under PAM treatment to stabilize soil erosion. Corn, potatoes,
sugar beets, and beans are analyzed for AMD. A sample of the crop
is homogenized with water, and the water layer is filtered and
derivatized with bromine to form 2,3-dibromopropionamide. The
derivative is then extracted with ethyl acetate and converted to the
more stable 2-propenamide prior to gas chromatographic analysis
using an electron capture detector. Capillary Carbowax columns
were used. All tested crops show < 10 ppb AMD. Furthermore, it
seems that AMD is not stable when it comes in contact with the
crop tissues. In the presence of plant tissues, AMD will disappear as
a function of time. Beans blended with 100 ppb AMD for 10 min
yield a recovery of only 22%. For a bean sample that was soaked
with 500 ppb AMD solution for 18 h, the recovery is 7%. Other
crops show different AMD recoveries.

Item Type: Article
NWISRL Publication Number: 0990
Subjects: Polyacrylamide (PAM) > Water-soluble PAM (WSPAM)
Research methodology
Mass Import - autoclassified (may be erroneous)
Depositing User: Users 6 not found.
Date Deposited: 20 Nov 2010 21:54
Last Modified: 17 Nov 2016 15:50
Item ID: 714