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Evidence: Toxicology Analysis Results

Yoknapatawpha County Forensic Laboratory

DATE ANALYSIS PERFORMED:
2/23/2004

Madeline Holland, Ph.D.
555 Jackson Avenue
Oxford, MS 38655
662-234-XXXX (FAX 662-234-XXXX)

Analysis: Toxicological Analysis

 

REPORT OF FORENSIC TOXICOLOGICAL ANALYSIS

Case Description:
 Barbara Dubois Homicide

Case #
 000388-31A-2004

Investigative Agency:
 Yoknapatawpha County Sheriff's Department

Investigating Officer(s):
 Det. S. Murphy, Det. T. Armstrong

EVIDENCE ANALYZED

  • 000388-06 and 000388-07: Two (2) samples from possible vomit pool in hallway outside YCCC Room #273
  • 000388-22: One (1) medium-sized plastic bag labeled "YCCC Dry Cleaning"
    • Contents: semi-liquid substance visually consistent with vomit
  • 000388-30: Chocolates found in Barbara Dubois' YCCC hotel room (#203)
  • 000388-33: Chocolates found in Ingrid Freeman's YCCC hotel room (#206)
  • 000388-34-013: 1-fl-oz bottle ipecac syrup found in Scarlett Webb's YCCC hotel room (#212)
  • 000388-35: Chocolates found in Scarlett Webb's YCCC hotel room (#212)
  • 000388-36 through 000388-38: Chocolates found in Sam Tuttle's YCCC hotel room (#217)
  • 000388-40: Chocolates found in Mary and Billie Jo Jones' YCCC hotel room (#247)
  • 000388-41: Urine sample from deceased
  • 000388-42: Blood sample from deceased

Evidence items were extracted with 5% methanol/chloroform and the organic layer was evaporated to afford a residue, which was subjected to high performance liquid chromatography (HPLC) using a reversed-phase column coupled with an electron-ionization mass spectrometer. A control sample of emetine was used for comparison.

HPLC-MS of Evidence Items:

Evidence #

Brief Description

Analysis Results

 000388-06  vomit sample
(from hallway)
 Peak with retention time of 5.2 min.
 (molecular ion = 481); 5.2mg
 000388-07  vomit sample
(from hallway)
 Peak with retention time of 5.2 min.
 (molecular ion = 481); 6.3mg
 000388-22  vomit sample
(from bag)
 Peak with retention time of 5.2 min.
 (molecular ion = 481); 4.2mg
 000388-30  chocolates
(Barbara Dubois)
 Peak with retention time of 5.2 min.
 (molecular ion = 481); 25mg
 000388-33  chocolates
(Ingrid Freeman)
 No peak (molecular ion = 481)
 000388-34-013  ipecac syrup
(Scarlett Webb)
 Peak with retention time of 5.2 min.
 (molecular ion = 481); 1.3mg/ml
 000388-35  chocolates
(Scarlett Webb)
 Peak with retention time of 5.2 min.
 (molecular ion = 481); 22mg
 000388-36  chocolates
(Sam Tuttle)
 No peak (molecular ion = 481)
 000388-37  chocolates
(Sam Tuttle)
 No peak (molecular ion = 481)
 000388-38  chocolates
(Sam Tuttle)
 No peak (molecular ion = 481)
 000388-40  chocolates
(Mary & Billie Jo Jones)
 No peak (molecular ion = 481)
 000388-41  deceased's urine  Peak with retention time of 5.2 min.
 (molecular ion = 481); 0.006mg
 000388-42  deceased's blood  Peak with retention time of 5.2 min.
 (molecular ion = 481); 15.3ng/ml
 Emetine  control  Retention time = 5.2 min.,
 molecular ion = 481

Results: Based on the positive presumptive test for emetine (thin layer chromatography), the above evidence items were analyzed using HPLC-MS to confirm the presence of emetine. Evidence items 000388-06, 000388-07, 000388-22, 000388-30, 000388-34-013, 000388-35, 000388-41 and 000388-42 are positive for emetine, an emetic alkaloid known to occur in Syrup of Ipecac.

 

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