Journal Published Online: 01 April 1979
Volume 24, Issue 2

A Liquid Gradient Density Screening System for Soil Sample Identification Studies Using a Minicomputer

CODEN: JFSCAS

Abstract

The use of density gradient systems for the identification and comparison of soil samples is a well-recognized procedure [1,2]. In the usual manual method, liquid from a series of mixtures consisting of various ratios of high and low density liquids, such as 1,1,2,2-tetrabromoethane and bromobenzene, is added to a glass tube positioned vertically in a stand having a ruled background. The liquid is added up to each line and two or more identical tubes are prepared for comparison of the unknown against the reference material. A simple 8- to 10-step gradient is usually sufficient to obtain a usable resolution for most soil samples.

Author Information

Harbin, DN
University of Missouri-Kansas City
Covey, EL
Regional Criminalistics Laboratory, Independence, Mo.
Howell, GR
Regional Criminalistics Laboratory, Independence, Mo.
Lott, JW
University of Missouri-Kansas City
Lott, PF
University of Missouri-Kansas City
Pages: 5
Price: $25.00
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Stock #: JFS10860J
ISSN: 0022-1198
DOI: 10.1520/JFS10860J