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Hossein Tavallali Fazlollah Boustani Mozhdeh Yazdandoust Mehdi Aalaei Mahboobeh Tabandeh 《Environmental monitoring and assessment》2013,185(5):4273-4279
A new complexing agent, 2-((2-((1H-benzo[d]imidazole-2yl)methoxy)phenoxy)methyl)-1H-benzo[d]imidazole (BIMPI), was used in cloud point extraction and applied for selective pre-concentration of trace amounts of cadmium in cigarette samples. Cadmium was complexed with BIMPI in a buffer solution (pH?=?10) using Triton X-114 as surfactant and quantitatively extracted into a small volume of the surfactant-rich phase after centrifugation. Under optimized conditions (pH?=?10.0, 0.8?×?10?4?mol?L?1 BIMPI and 0.08 % (w/v) Triton X-114), calibration graph was linear in the range of 34.0–1,670.0 μg?L?1. The proposed method was applied to the determination of Cd in various cigarette (tobacco) samples which gave satisfactory results. 相似文献
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