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Modification of multiwalled carbon nanotubes by dipyridile amine for potentiometric determination of lead(II) ions in environmental samples
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نویسنده
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lotfi zadeh zhad h.r. ,aboufazeli f. ,amani v. ,najafi e. ,sadeghi o.
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منبع
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journal of chemistry - 2013 - دوره : 2013 - شماره : 0
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چکیده
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A carbon paste electrode was modified by dipyridile amine functionalized multiwalled carbon nanotubes for determination of trace amounts of lead(ii) ions. the electrode composition was graphite powder 70%,paraffin 23%,and dipyridile amine modified mwcnts 7% (w/w). the linear range for lead(ii) was 9.5 × 10-8 to 2.5 × 10-3 mol l-1,and the limit of detection was obtained 7.0 × 10-8 mol l -1. the lifetime of the electrode was ten weeks,and a fast response time was observed. the electrode was used for determination of trace amounts of pb(ii) ions in real samples and standard reference materials of water,soil,and plant. © 2013 hamid reza lotfi zadeh zhad et al.
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آدرس
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department of chemistry,shahr-e-rey branch,islamic azad university,p.o. box 18735-334, ایران, department of chemistry,shahr-e-rey branch,islamic azad university,p.o. box 18735-334, ایران, department of chemistry,shahr-e-rey branch,islamic azad university,p.o. box 18735-334, ایران, department of chemistry,shahr-e-rey branch,islamic azad university,p.o. box 18735-334, ایران, department of chemistry,shahr-e-rey branch,islamic azad university,p.o. box 18735-334, ایران
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Authors
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