Application of multivariate chemometrics in forensic soil discrimination based on the UV-Vis spectrum of the acid fraction of humus

Thanasoulias, N.C.; Piliouris, Evaggelos T; Kotti, Melina; Evmiridis, Nicholas P

doi:10.1016/s0379-0738(02)00369-9

Cited by 49 publications

(24 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The main physical techniques normally used for forensic issues are: particle size distribution [2][3][4][5][6][7]; soil color UV-vis www.elsevier.com/locate/forsciint Available online at www.sciencedirect.com spectrum [4,8,9]; density gradient [10]; microscopical features [1]; Fourier Transformed Infrared Spectroscopy (FTIR) [11] and; X-ray diffraction [12].…”

Section: Introductionmentioning

confidence: 99%

Chemical, physical and mineralogical characterization of soils from the Curitiba Metropolitan Region for forensic purpose

Melo

Barbar²,

Zamora

et al. 2008

Forensic Science International

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Chemical, physical and mineralogical characterization of soils from the Curitiba Metropolitan Region for forensic purpose

Melo

Barbar²,

Zamora

et al. 2008

Forensic Science International

View full text Add to dashboard Cite

“…KEYWORDS: forensic science, rietveld method, multivariate analysis, dithionite-citrate-bicarbonate, kaolinite, gibbsite, crystallite size Soil vestiges might produce important information in criminal investigations (1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16), and these vestiges might be transferred and remain impregnated in the victim's or criminal's accessories such as tools, shoe soles, wheels and tires, clothes (10). Using suitable techniques, these vestiges might provide accurate information about the crime scene, through comparison with previously mapped locations and analyzed soil samples (2).…”

mentioning

confidence: 99%

X‐ray Diffraction and Rietveld Refinement in Deferrified Clays for Forensic Science

Prandel

Melo

Brinatti

et al. 2017

Journal of Forensic Sciences

View full text Add to dashboard Cite

Soil vestiges might provide information about a crime scene. The Rietveld method with X-ray diffraction data (RM-XRD) is a nondestructive technique that makes it possible to characterize minerals present in the soils. Soil clays from the metropolitan region of Curitiba (Brazil) were submitted to DCB treatment and analyzed using XRD with CuK a radiation in the step-scan mode (0.02°2h/5 s). The GSAS+EXP-GUI software was used for RM refinement. The RM-XRD results, together with the principal component analysis (PCA) (52.6% total variance), showed the kaolinite predominance in most analyzed samples and the highest quartz contents in "site 1." Higher anatase, and gibbsite and muscovite contents influenced discrimination, mainly in "site 3" and "site 1," respectively. These results were enough to discriminate clays of four sites and two horizons using a reduced amount of sample showing that the technique can be applied to the investigation into soil vestiges.

show abstract

“…[87,88] The soil UV-vis absorbance spectrum of the acid fraction of soil humus was used to discriminate soils and achieved good discrimination (85% correct classification) provided multivariate statistical techniques were also applied. [89] However, such profiles can be very complex and difficult to interpret, and are dependent on the specific conditions used for analysis, bringing into question analytical reproducibility which may limit forensic applications.…”

Section: Soil Organic Mattermentioning

confidence: 99%

Measurement of soil characteristics for forensic applications

Dawson¹,

Hillier²

2010

Surface & Interface Analysis

View full text Add to dashboard Cite

Soils may constitute evidence that connects a person or object to a particular location. The value of soil stems from its ubiquity and transferability to objects or persons. Due to the complexity of soil, the analysis of its inorganic and organic components can provide complementary and independent types of information about its geological origin, dominant vegetation, management and environment. We present an overview of a range of soil characterisation methods including chemical analysis, mineralogy and palynology, along with new approaches such as DNA profiling and profiling of other digital data such as that obtained from X-ray powder diffraction, infrared spectroscopy and organic marker analysis.Individual analytical techniques have different scales of resolution and relevance depending on the nature of the criminal case and context. Each method has its strengths and weaknesses. As more methods have become digital and quantitative, their use in combination as digital profiles will help to characterise soils more accurately and at different scales. These new approaches can be tested using existing soil databases, and database development and use will help to refine and narrow probable origin of a questioned sample in police intelligence, as well as giving increasingly robust sample comparisons for evidence.

show abstract

Application of multivariate chemometrics in forensic soil discrimination based on the UV-Vis spectrum of the acid fraction of humus

Cited by 49 publications

References 12 publications

Chemical, physical and mineralogical characterization of soils from the Curitiba Metropolitan Region for forensic purpose

Chemical, physical and mineralogical characterization of soils from the Curitiba Metropolitan Region for forensic purpose

X‐ray Diffraction and Rietveld Refinement in Deferrified Clays for Forensic Science

Measurement of soil characteristics for forensic applications

Contact Info

Product

Resources

About