an on-line preconcentration system based on graphitic carbon nitride coated membrane filter for the fast determination of trace levels of lead in water samples
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نویسنده
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zolfonoun ehsan ,yousefi reza
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منبع
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iranian journal of analytical chemistry - 2020 - دوره : 7 - شماره : 2 - صفحه:30 -36
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چکیده
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A ligandless on-line solid phase extraction method was developed for the preconcentration of lead prior to quantitation by inductively coupled plasma-optical emission spectrometry. in this method, the sample solution was passed through a syringe membrane filter coated with graphitic carbon nitride and pb(ii) ions were directly adsorbed on the surface of g-c3n4 particles. the adsorbed pb(ii) ions were subsequently eluted from the membrane and transferred directly into the icp-oes nebulizer with nitric acid solution. under the optimized conditions and preconcentration of 25 ml of sample, the enhancement factor of 110 and the detection limit of 0.12 μg l^-1 were obtained. the proposed procedure was applied for the preconcentration and determination of lead in environmental water samples.
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کلیدواژه
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on-line preconcentration; solid phase extraction; graphitic carbon nitride; lead; icp-oes
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آدرس
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nuclear science & technology research institute, nuclear fuel cycle research school, iran, nuclear science & technology research institute, nuclear fuel cycle research school, iran
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پست الکترونیکی
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s_r_yousefi@yahoo.com
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