Alternative dry separation of PM^sub 10^ from soils for characterization by kinetic extraction: example of new Caledonian mining soils

A simple new device for dry separation of fine particulate matter from bulk soil samples is presented here. It consists of a stainless steel tube along which a nitrogen flow is imposed, resulting in the displacement of particles. Taking into account particle transport, fluid mechanics, and soil samp...

Full description

Saved in:
Bibliographic Details
Published in:Environmental science and pollution research international 2016-12, Vol.23 (24), p.25105
Main Authors: Pasquet, Camille, Gunkel-grillon, Peggy, Laporte-magoni, Christine, Serres, Arnaud, Quiniou, Thomas, Rocca, François, Monna, Fabrice, Losno, Remi, van Oort, Folkert, Chateau, Carmela
Format: Article
Language:English
Subjects:
Bioavailability
Dust
Environmental quality
Environmental quality assessment
Environmental science
Environmental studies
Fluid flow
Fluid mechanics
Kinetics
Laboratories
Leaching
Metals
Mining
Outdoor air quality
Particulate matter
Risk assessment
Soil contamination
Soil pollution
Stainless steel
Statistical analysis
Trace elements
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A simple new device for dry separation of fine particulate matter from bulk soil samples is presented here. It consists of a stainless steel tube along which a nitrogen flow is imposed, resulting in the displacement of particles. Taking into account particle transport, fluid mechanics, and soil sample composition, a tube 6-m long, with a 0.04-m diameter, was found best adapted for PM10 separation. The device rapidly produced several milligrams of particulate matter, on which chemical extractions with EDTA were subsequently performed to study the kinetic parameters of extractable metals. New Caledonian mining soils were chosen here, as a case-study. Although the easily extracted metal pool represents only 0.5-6.4 % of the total metal content for the elements studied (Ni, Co, Mn), the total concentrations are extremely high. This pool is therefore far from negligible, and can be troublesome in the environment. This dry technique for fine particle separation from bulk parent soil eliminates the metal-leaching risks inherent in wet filtration and should therefore ensure safe assessment of environmental quality in fine-textured, metal-contaminated soils.
ISSN:0944-1344
1614-7499
DOI:10.1007/s11356-016-7617-x