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54 Methods <strong>for</strong> <strong>impurity</strong> <strong>pr<strong>of</strong>iling</strong> <strong>of</strong> <strong>heroin</strong> <strong>and</strong> <strong>cocaine</strong><br />

46. R. P. Mariella <strong>and</strong> K. K. Brown, “Comment: concurring the cleavage <strong>of</strong> tertiary<br />

amines with acetic anhydride”, Canadian Journal <strong>of</strong> Chemistry, vol. 51, 1973, p. 2177.<br />

47. T. Tamminen <strong>and</strong> others, “Indoloquinolizidine iminium species <strong>for</strong>med under the modified<br />

Polonovski reaction conditions”, Tetrahedron, vol. 45, No. 9 (1989), pp. 2683-2692.<br />

48. L. Strömberg <strong>and</strong> others, “Heroin <strong>impurity</strong> <strong>pr<strong>of</strong>iling</strong>: a harmonization study <strong>for</strong> retrospective<br />

comparisons”, Forensic Science International, vol. 114, No. 2 (2000),<br />

pp. 67-88.<br />

49. J. F. Casale <strong>and</strong> R. W. Waggoner, Jr. “A chromatographic <strong>impurity</strong> signature pr<strong>of</strong>ile<br />

analysis <strong>for</strong> <strong>cocaine</strong> using capillary gas chromatography”, Journal <strong>of</strong> Forensic Sciences,<br />

vol. 36, No. 5 (1991), pp. 1312-1330.<br />

50. J. M. Moore <strong>and</strong> others, “Capillary gas chromatographic-electron capture detection <strong>of</strong><br />

coca-leaf-related impurities in illicit <strong>cocaine</strong>: 2,4-diphenylcyclobutane-1,3-dicarboxylic<br />

acids, 1,4-diphenylcyclobutane-2,3-dicarboxylic acids <strong>and</strong> their alkaloidal precursors,<br />

the truxillines”, Journal <strong>of</strong> Chromatography A, vol. 410, 1987, pp. 297-318.<br />

51. J. M. Moore <strong>and</strong> D. A. Cooper, “The application <strong>of</strong> capillary gas chromatographyelectron<br />

capture detection in the comparative analyses <strong>of</strong> illicit <strong>cocaine</strong> samples”,<br />

Journal <strong>of</strong> Forensic Sciences, vol. 38, No. 6 (1993), pp. 1286-1304.<br />

52. J. M. Moore, J. F. Casale <strong>and</strong> D. A. Cooper, “Comparative determination <strong>of</strong> total<br />

isomeric truxillines in illicit, refined, South American <strong>cocaine</strong> hydrochloride using<br />

capillary gas chromatography-electron capture detection”, Journal <strong>of</strong> Chromatography<br />

A, vol. 756, No. 1-2 (1996), pp. 193-201.<br />

53. L. Rivier, “Analysis <strong>of</strong> alkaloids in leaves <strong>of</strong> cultivated Erythroxylum <strong>and</strong> characterization<br />

<strong>of</strong> alkaline substances used during coca chewing”, Journal <strong>of</strong> Ethnopharmacology,<br />

vol. 3, Nos. 2-3 (1981), pp. 313-335.<br />

54. J. M. Moore <strong>and</strong> J. F. Casale, “Cocaine <strong>pr<strong>of</strong>iling</strong> methodology: recent advances”,<br />

Forensic Science Review, vol. 10, 1998, pp. 13-46.<br />

55. H. Neumann <strong>and</strong> T. Holdermann, “Comparison <strong>of</strong> <strong>cocaine</strong> samples by isotope ratio<br />

mass spectrometry (1998-2001)”, unpublished manuscript.<br />

56. H. Neumann <strong>and</strong> M. Gloger, “Pr<strong>of</strong>iling <strong>of</strong> illicit <strong>heroin</strong> samples by high-resolution<br />

capillary gas chromatography <strong>for</strong> <strong>for</strong>ensic application”, Chromatographia, vol. 16,<br />

1982, pp. 261-264.<br />

57. I. S. Lurie <strong>and</strong> others, “Analysis <strong>of</strong> manufacturing by-products <strong>and</strong> impurities in illicit<br />

<strong>cocaine</strong> via high-per<strong>for</strong>mance liquid chromatography <strong>and</strong> photodiode array detection”,<br />

Journal <strong>of</strong> Chromatography A, vol. 405, 1987, pp. 273-281.

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