Characterisation and analysis of persistent organic pollutants and major, minor and trace elements in Calabash chalk

John Dean; Michael Deary; B. K. Gbefa; Wanda C. Scott

doi:10.1016/j.chemosphere.2004.05.023

Characterisation and analysis of persistent organic pollutants and major, minor and trace elements in Calabash chalk

John Dean, Michael Deary, B. K. Gbefa, Wanda C. Scott

Research output: Contribution to journal › Article › peer-review

33 Citations (Scopus)

Abstract

Analysis of Calabash chalk has been done using energy dispersive X-ray fluorescence spectroscopy (EDXRF), X-ray diffraction (XRD) and pressurised fluid extraction (PFE) followed by gas chromatography (GC) with mass selective detection (MSD). It was found by XRD that the composition of Calabash chalk was an aluminium silicate hydroxide from the kaolin clay group with the possible formula Al2Si2O5(OH)4. Multi-elemental analysis by EDXRF was able to quantify 22 elements in Calabash chalk including lead at a mean concentration of approximately 40 mg/kg. A range of persistent organic pollutants were identified and quantified in Calabash chalk including alpha lindane, endrin, endosulphan II and p,p′-DDD using PFE-GC-MSD.

Original language	English
Pages (from-to)	21-25
Journal	Chemosphere
Volume	57
Issue number	1
DOIs	https://doi.org/10.1016/j.chemosphere.2004.05.023
Publication status	Published - Oct 2004

Keywords

Calabash chalk
metals
persistent organic pollutants
Geophagia
energy dispersive X-ray fluorescence spectroscopy (EDXRF)
gas chromatography with mass selective detection (GC-MSD)

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10.1016/j.chemosphere.2004.05.023

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title = "Characterisation and analysis of persistent organic pollutants and major, minor and trace elements in Calabash chalk",

abstract = "Analysis of Calabash chalk has been done using energy dispersive X-ray fluorescence spectroscopy (EDXRF), X-ray diffraction (XRD) and pressurised fluid extraction (PFE) followed by gas chromatography (GC) with mass selective detection (MSD). It was found by XRD that the composition of Calabash chalk was an aluminium silicate hydroxide from the kaolin clay group with the possible formula Al2Si2O5(OH)4. Multi-elemental analysis by EDXRF was able to quantify 22 elements in Calabash chalk including lead at a mean concentration of approximately 40 mg/kg. A range of persistent organic pollutants were identified and quantified in Calabash chalk including alpha lindane, endrin, endosulphan II and p,p′-DDD using PFE-GC-MSD.",

keywords = "Calabash chalk, metals, persistent organic pollutants, Geophagia, energy dispersive X-ray fluorescence spectroscopy (EDXRF), gas chromatography with mass selective detection (GC-MSD)",

author = "John Dean and Michael Deary and Gbefa, {B. K.} and Scott, {Wanda C.}",

year = "2004",

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doi = "10.1016/j.chemosphere.2004.05.023",

language = "English",

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TY - JOUR

T1 - Characterisation and analysis of persistent organic pollutants and major, minor and trace elements in Calabash chalk

AU - Dean, John

AU - Deary, Michael

AU - Gbefa, B. K.

AU - Scott, Wanda C.

PY - 2004/10

Y1 - 2004/10

N2 - Analysis of Calabash chalk has been done using energy dispersive X-ray fluorescence spectroscopy (EDXRF), X-ray diffraction (XRD) and pressurised fluid extraction (PFE) followed by gas chromatography (GC) with mass selective detection (MSD). It was found by XRD that the composition of Calabash chalk was an aluminium silicate hydroxide from the kaolin clay group with the possible formula Al2Si2O5(OH)4. Multi-elemental analysis by EDXRF was able to quantify 22 elements in Calabash chalk including lead at a mean concentration of approximately 40 mg/kg. A range of persistent organic pollutants were identified and quantified in Calabash chalk including alpha lindane, endrin, endosulphan II and p,p′-DDD using PFE-GC-MSD.

AB - Analysis of Calabash chalk has been done using energy dispersive X-ray fluorescence spectroscopy (EDXRF), X-ray diffraction (XRD) and pressurised fluid extraction (PFE) followed by gas chromatography (GC) with mass selective detection (MSD). It was found by XRD that the composition of Calabash chalk was an aluminium silicate hydroxide from the kaolin clay group with the possible formula Al2Si2O5(OH)4. Multi-elemental analysis by EDXRF was able to quantify 22 elements in Calabash chalk including lead at a mean concentration of approximately 40 mg/kg. A range of persistent organic pollutants were identified and quantified in Calabash chalk including alpha lindane, endrin, endosulphan II and p,p′-DDD using PFE-GC-MSD.

KW - Calabash chalk

KW - metals

KW - persistent organic pollutants

KW - Geophagia

KW - energy dispersive X-ray fluorescence spectroscopy (EDXRF)

KW - gas chromatography with mass selective detection (GC-MSD)

U2 - 10.1016/j.chemosphere.2004.05.023

DO - 10.1016/j.chemosphere.2004.05.023

M3 - Article

SN - 0045-6535

VL - 57

SP - 21

EP - 25

JO - Chemosphere

JF - Chemosphere

IS - 1

ER -

Characterisation and analysis of persistent organic pollutants and major, minor and trace elements in Calabash chalk

Abstract

Keywords

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