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Determination of lead in solution by solid phase extraction, elution, and spectrophotometric detection using 4-(2-pyridylazo)-resorcinol |
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| Authors: | Ismail M. M. Rahman Yoshiaki Furusho Zinnat A. Begum Rika Sato Hiroshi Okumura Hiroko Honda Hiroshi Hasegawa | |
| Affiliation: | 1. Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa, 920-1192, Japan 2. Department of Applied and Environmental Chemistry, University of Chittagong, Chittagong, 4331, Bangladesh 3. GL Sciences Inc., Nishishinjuku 6-22-1, Shinjuku, Tokyo, 163-1130, Japan 4. Kyoritsu Chemical Check Lab., Corp., Ohta-ku, Tokyo, 145-0071, Japan 5. Institute of Science and Engineering, Kanazawa University, Kakuma, Kanazawa, 920-1192, Japan |
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| Abstract: | Lead (+2) was selectively adsorbed on a solid phase extraction (SPE) gel (molecular recognition technology, MRT), quantitatively extracted, and spectrophotometrically determined as the Pb(II)-PAR (4-(2-pyridylazo)-resorcinol) complex. The linear range was 0.01 to 0.75 mg L?1 and the detection limit was 6.4 µg L?1. The MRT-SPE allows selective Pb(II) extraction from complex ion-rich matrices, which is difficult with other techniques. Interference from common matrix ions such as Fe2+, Ni2+, Cu2+ or Co2+ is minimized.  | |
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