Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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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.
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.
KW - Explosive residues
KW - Inorganic cations
KW - Isotachophoresis
KW - Miniaturisation
U2 - 10.1002/elps.201000263
DO - 10.1002/elps.201000263
M3 - Journal article
VL - 31
SP - 3775
EP - 3782
JO - Electrophoresis
JF - Electrophoresis
SN - 0173-0835
IS - 22
ER -