Trace evidence analysis

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MISSISSIPPI CRIME LABORATORY
DATE ANALYSIS PERFORMED: 10/10/2018 Andrew Needham, FTEE Jackson Laboratory Jackson, MS 39205 601-987-XXXX (FAX 601-987-XXXX)	Analysis: Trace Evidence Examination RUSH
SUMMARY REPORT OF FORENSIC ANALYSIS
Case Description: Kristal Waterson death investigation	Case # 005191-07J-2018
Investigative Agency: Yoknapatawpha County Sheriff's Department	Investigating Officer(s): Det. S. Murphy, Det. T. Armstrong

The following evidence collected during the autopsy of Kristal Waterson was analyzed with the results shown.

Note: Some findings have been condensed and/or simplified for inclusion in this report.

Areas of the body were swabbed (in duplicate) and submitted for trace analysis using LC-MS and FT-IR. One of each of the swabs was extracted with dichloromethane and water to obtain organic (O) and aqueous (A) extracts, respectively.

The duplicate swabs were stored for future analysis if needed.

Aqueous Extract Analysis
Organic Extract Analysis

Aqueous Extract Analysis

Item	Description	Findings
005191-B001A	swab from behind right ear	Positive for hypochlorite (LC-MS)
005191-B002A	swab from behind left ear	Positive for hypochlorite (LC-MS)
005191-B003A	swab from left upper arm	Positive for hypochlorite (LC-MS)
005191-B004A	swab from right upper arm	Positive for hypochlorite (LC-MS)
005191-B005A	swab from left breast	Positive for hypochlorite (LC-MS)
005191-B006A	swab from right breast	Positive for hypochlorite (LC-MS)
005191-B007A	swab from abdominal area	Positive for hypochlorite (LC-MS)
005191-B008A	swab from back area	Positive for hypochlorite (LC-MS)
005191-B009A	swab from left buttock	Positive for hypochlorite (LC-MS)
005191-B010A	swab from right buttock	Positive for hypochlorite (LC-MS)
005191-B011A	swab from left inner thigh	Positive for hypochlorite (LC-MS)
005191-B012A	swab from right inner thigh	Positive for hypochlorite (LC-MS)
005191-B013A	swab from left foot	Positive for hypochlorite (LC-MS)
005191-B014A	swab from right foot	Positive for hypochlorite (LC-MS)
005191-B015A	vaginal swab	No detectable analytes

Hypochlorite is found in standard household bleach.

Organic Extract Analysis

Item	Description	Findings
005191-B001O	swab from behind right ear	No detectable analytes
005191-B002O	swab from behind left ear	No detectable analytes
005191-B003O	swab from left upper arm	No detectable analytes
005191-B004O	swab from right upper arm	No detectable analytes
005191-B005O	swab from left breast	No detectable analytes
005191-B006O	swab from right breast	No detectable analytes
005191-B007O	swab from abdominal area	No detectable analytes
005191-B008O	swab from back area	No detectable analytes
005191-B009O	swab from left buttock	No detectable analytes
005191-B010O	swab from right buttock	No detectable analytes
005191-B011O	swab from left inner thigh	No detectable analytes
005191-B012O	swab from right inner thigh	No detectable analytes
005191-B013O	swab from left foot	No detectable analytes
005191-B014O	swab from right foot	No detectable analytes
005191-B015O	vaginal swab	Positive for polydimethylsiloxane (PDMS)

Microscopic examination of the vaginal swab yielded no spermatozoa. The positive presence of PDMS (a lubricant in Trojan latex condoms) is consistent with the lack of spermatozoa. Analysis for nonoxynol-9 (spermicide) was negative. Swab samples were retained for subsequent spectroscopic analysis if necessary.

Infrared Spectroscopic Analysis of 005191-015O