Determination of the potassium content of explosive residues using miniaturised isotachophoresis

Jeff E. Prest; Matthew S. Beardah; Sara J. Baldock; Sean P. Doyle; Peter R. Fielden; Nicholas J. Goddard; Bernard J Treves Brown

doi:10.1002/elps.201000263

Determination of the potassium content of explosive residues using miniaturised isotachophoresis

Jeff E. Prest, Matthew S. Beardah, Sara J. Baldock, Sean P. Doyle, Peter R. Fielden, Nicholas J. Goddard, Bernard J Treves Brown

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

Abstract

A new method has been developed to allow the determination of potassium in post-explosion residues to be made using miniaturised isotachophoresis. The method is based on the use of a caesium leading ion with 4.5-mM 18-crown-6 ether added to retard the potassium to allow reliable determinations to be made. With the conditions selected no interference was noted from other small inorganic cations, such as ammonium, barium, calcium, magnesium, sodium or strontium. The method was successfully applied to the analysis of seven samples containing explosive residues obtained from the unconfined burning of several flash powders. The procedure was found to offer good linearity for potassium determinations over the concentration range of 1.25-150-μg/mL with a coefficient of determination of 0.999 achieved. © 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Original language	English
Pages (from-to)	3775-3782
Number of pages	7
Journal	Electrophoresis
Volume	31
Issue number	22
DOIs	https://doi.org/10.1002/elps.201000263
Publication status	Published - Nov 2010

Keywords

Explosive residues
Inorganic cations
Isotachophoresis
Miniaturisation

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10.1002/elps.201000263

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title = "Determination of the potassium content of explosive residues using miniaturised isotachophoresis",

abstract = "A new method has been developed to allow the determination of potassium in post-explosion residues to be made using miniaturised isotachophoresis. The method is based on the use of a caesium leading ion with 4.5-mM 18-crown-6 ether added to retard the potassium to allow reliable determinations to be made. With the conditions selected no interference was noted from other small inorganic cations, such as ammonium, barium, calcium, magnesium, sodium or strontium. The method was successfully applied to the analysis of seven samples containing explosive residues obtained from the unconfined burning of several flash powders. The procedure was found to offer good linearity for potassium determinations over the concentration range of 1.25-150-μg/mL with a coefficient of determination of 0.999 achieved. {\textcopyright} 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.",

keywords = "Explosive residues, Inorganic cations, Isotachophoresis, Miniaturisation",

author = "Prest, {Jeff E.} and Beardah, {Matthew S.} and Baldock, {Sara J.} and Doyle, {Sean P.} and Fielden, {Peter R.} and Goddard, {Nicholas J.} and Brown, {Bernard J Treves}",

year = "2010",

month = nov,

doi = "10.1002/elps.201000263",

language = "English",

volume = "31",

pages = "3775--3782",

journal = "Electrophoresis",

issn = "0173-0835",

publisher = "John Wiley & Sons Ltd",

number = "22",

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TY - JOUR

T1 - Determination of the potassium content of explosive residues using miniaturised isotachophoresis

AU - Prest, Jeff E.

AU - Beardah, Matthew S.

AU - Baldock, Sara J.

AU - Doyle, Sean P.

AU - Fielden, Peter R.

AU - Goddard, Nicholas J.

AU - Brown, Bernard J Treves

PY - 2010/11

Y1 - 2010/11

N2 - A new method has been developed to allow the determination of potassium in post-explosion residues to be made using miniaturised isotachophoresis. The method is based on the use of a caesium leading ion with 4.5-mM 18-crown-6 ether added to retard the potassium to allow reliable determinations to be made. With the conditions selected no interference was noted from other small inorganic cations, such as ammonium, barium, calcium, magnesium, sodium or strontium. The method was successfully applied to the analysis of seven samples containing explosive residues obtained from the unconfined burning of several flash powders. The procedure was found to offer good linearity for potassium determinations over the concentration range of 1.25-150-μg/mL with a coefficient of determination of 0.999 achieved. © 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

AB - A new method has been developed to allow the determination of potassium in post-explosion residues to be made using miniaturised isotachophoresis. The method is based on the use of a caesium leading ion with 4.5-mM 18-crown-6 ether added to retard the potassium to allow reliable determinations to be made. With the conditions selected no interference was noted from other small inorganic cations, such as ammonium, barium, calcium, magnesium, sodium or strontium. The method was successfully applied to the analysis of seven samples containing explosive residues obtained from the unconfined burning of several flash powders. The procedure was found to offer good linearity for potassium determinations over the concentration range of 1.25-150-μg/mL with a coefficient of determination of 0.999 achieved. © 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

KW - Explosive residues

KW - Inorganic cations

KW - Isotachophoresis

KW - Miniaturisation

U2 - 10.1002/elps.201000263

DO - 10.1002/elps.201000263

M3 - Article

SN - 0173-0835

VL - 31

SP - 3775

EP - 3782

JO - Electrophoresis

JF - Electrophoresis

IS - 22

ER -

Determination of the potassium content of explosive residues using miniaturised isotachophoresis

Abstract

Keywords

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