| 00:00:00 | Welcome! |
| 00:01:13 | Forensic Soil Analysis |
| 00:01:20 | Overview |
| 00:01:59 | A BRIEF HISTORY OF FORENSIC SOIL ANALYSIS |
| 00:02:02 | Sherlock Holmes |
| 00:02:25 | Hans Gross |
| 00:02:55 | “The Microscope as Detective” |
| 00:04:02 | The Filbert Case (1908) |
| 00:05:56 | The Filbert Case (1908) |
| 00:07:16 | Locard Exchange Principle (1929) |
| 00:07:51 | Untitled |
| 00:08:51 | FORENSIC SOIL ANALYSIS |
| 00:08:55 | Soil (for Forensic Purposes) |
| 00:09:08 | Soil Complexity |
| 00:09:28 | Mineral |
| 00:10:15 | Soil Examination/Analysis |
| 00:10:27 | Modern Methods of Soil Analysis |
| 00:10:52 | Particle Size Distribution |
| 00:11:09 | Untitled |
| 00:11:17 | Modern Methods for Mineral Identification |
| 00:11:52 | Raman Microspectroscopy |
| 00:12:42 | Why MDRS for Soil Minerals? |
| 00:14:12 | Soil analysis case study |
| 00:14:53 | Soil samples were collected from Malvern offices at three locations around the world… |
| 00:15:30 | MDRS – Morphologically-Directed Raman Spectroscopy….How does it work? |
| 00:16:39 | Soil sample preparation |
| 00:17:21 | Results overview |
| 00:17:30 | 20160510-Malvern-ForensicSoilAnalysis |
| 00:17:30 | Summary - Chemical composition of soil samples |
| 00:17:53 | Chemical composition of soil samples |
| 00:18:19 | Chemical composition of soil samples |
| 00:18:27 | Chemical composition of soil samples |
| 00:18:32 | Size distribution of quartz component in soil |
| 00:18:52 | Shape distributions of quartz component in soil |
| 00:18:58 | Shape distributions of quartz component in soil |
| 00:19:03 | Detailed characterization: Tokyo, Japan soil sample |
| 00:19:26 | Detailed characterization: Tokyo, Japan soil sample |
| 00:19:57 | Summary |
| 00:20:17 | Soil analysis case study |
| 00:20:46 | Materials and Methods |
| 00:21:44 | Quartz Sites B and C – Particle Morphologies |
| 00:22:23 | Quartz PSD –Site B vs Site C |
| 00:23:19 | MDRS of Soil Minerals% Particle Count |
| 00:24:10 | Chemometrics: Principal Component Analysis |
| 00:26:14 | Chemometrics: Principal Component Analysis |
| 00:26:25 | PCA of Soil Mineral Data |
| 00:26:49 | Conclusions |
| 00:27:51 | Thank you for your attentionAny questions? |
| 00:31:33 | Contact Information |
This presentation explores the relevance of soil analysis in forensic science. It presents the use of Morphologically-Directed Raman Spectroscopy (MDRS) and its potential to be a valuable tool for forensic soil analysis due to its non-destructive, automated approach to collecting morphological and chemical information on individual particles. The presentation includes a live demonstration of the Morphologi software, using a simple example to compare soils collected from different Malvern sites around the world. A more detailed forensic example is presented which combines MDRS analysis with principal component analysis to distinguish between soil samples collected from four sites along the same road.