Premium
Development of Dispersive Liquid–Liquid Microextraction Based on Solidification of Floating Organic Drop for the Determination of Trace Lead in Water
Author(s) -
Zhang JingWen,
Wang YuKun,
Du HaiYing,
Du Xin,
Ma JingJun,
Li JingCi
Publication year - 2011
Publication title -
clean – soil, air, water
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.444
H-Index - 66
eISSN - 1863-0669
pISSN - 1863-0650
DOI - 10.1002/clen.201000370
Subject(s) - certified reference materials , detection limit , relative standard deviation , drop (telecommunication) , calibration curve , liquid liquid , analytical chemistry (journal) , chromatography , atomic absorption spectroscopy , materials science , chemistry , replicate , computer science , telecommunications , physics , quantum mechanics , statistics , mathematics
A new method for determining lead (Pb) content was developed by dispersive liquid–liquid microextraction based on the solidification of floating organic droplets followed by flame atomic absorption spectrometry. Under optimum conditions, the calibration graph was linear within the Pb content range of 8.43–400 µg L −1 with a detection limit of 2.53 µg L −1 . The relative standard deviation for 10 replicate measurements of 20 and 400 µg L −1 of Pb were 3.41 and 2.78%, respectively. The proposed method was assessed through the analysis of certified reference water and recovery experiments.