Abstract
U. S. Food and Drug Administration in-house reference material (RM) Cocoa Powder and National Institute of Standards and Technology Standard RMs (SRMs) 1515 apple leaves, 1547 peach leaves, 1571 orchard leaves, 1566a oyster tissue, and 1568a rice flour were co-irradiated together with polyethylene blanks and analyzed for Hg and Se by anticoincidence instrumental neutron activation analysis. The three botanical SRM portions showed a combined Hg recovery of 70 % while the other portions showed a combined Hg recovery of 169 %, indicating that volatile Hg was lost from botanical SRMs and absorbed by the other irradiated portions. Total Hg recovery for all portions was 82 %. Se results showed no evidence of cross-contamination and all results agreed with certified and known values. National Research Council of Canada Certified RMs DOLT-3 dogfish liver, TORT-2 lobster hepatopancreas, and DORM-3 fish protein were separately analyzed either with no treatment or after treatment with l-cysteine solutions followed by drying over magnesium perchlorate. Each set of portions was co-irradiated with polyethylene and treated filter blanks. Analysis of all components of each treated portion irradiation package showed that essentially all Hg was retained within the package. Treated DOLT-3 portions (inorganic Hg content 53 %) showed a tenfold improvement with 99 % Hg retention. Hg retention for DORM-3 (7 % inorganic Hg) was 85 % (a twofold improvement) while retention for TORT-2 (44 % inorganic Hg), was 94 %, similar to that for untreated portions (96 %). Small irradiation losses (≤0.5 %) of volatile species of Se, As, and Br were observed.
Similar content being viewed by others
References
Westermark T, Sjostrand B (1960) Int J Appl Radiat Isot 9:1–15
Greenwood MR, Clarkson TW (1970) Am Ind Hyg Assoc J 31:250–251
Bate LC (1971) Radiochem Radioanal Lett 6(3):139–144
Larsen JO, Tandeski EV (1975) Anal Chem 47(7):1159–1161
Ortiz AIC, Albarrán YM, Rica CC (2002) J Anal At Spectrom 17:1595–1601
Zaichik V, Zaichik S (1997) J Radioanal Nucl Chem 218(2):249–253
Zeisler Z, Greenberg RR, Stone SF, Sullivan TM (1988) Fres Zeit Anal Chem 332:612–615
Pillay KKS, Thomas CC Jr, Hyche CM (1974) J Radioanal Chem 20:597–606
Zaichik V, Zaichik S (2000) J Radioanal Nucl Chem 244(2):279–281
Cunningham WC (2006) Reference sheet for FDA Cocoa Powder reference material, U.S. Food and Drug Administration, Center for Food Safety and Applied Nutrition, College Park
Anderson DL, Cunningham WC (1994) Trans Am Nucl Soc 71:21
Anderson DL (2009) J Radioanal Nucl Chem 282(1):11–14
Anderson DL (2009) J Radioanal Nucl Chem 282(1):75–79
Lindstrom RM, Zeisler R, Mackey EA, Popelka-Filcoff RS, Williams RE (2008) J Radioanal Nucl Chem 278(1):665–669
Thompson M, Wood R (1993) J AOAC Int 76:926–940
Certificates of Analysis, DORM-3 DOLT-3 (2003), TORT-2 (1994), National Research Council of Canada, Ottawa
Acknowledgments
The author is indebted to the Reactor Operations staff at the NCNR.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Anderson, D.L. INAA study of Hg, Se, As, and Br irradiation losses from l-cysteine treated and untreated reference materials. J Radioanal Nucl Chem 296, 181–185 (2013). https://doi.org/10.1007/s10967-012-1929-1
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10967-012-1929-1