Progress on spectrophotometric determination of lead(Ⅱ)
The development of spectrophotometriodetermination of lead(Ⅱ) is reviewed. The main anal-ysis methods include conventional spectrophotometry, catalytic kinetic spectrophotometry , inhibition kinetic spectrophotometry, fluorescence speetrophotometry , resonance light scattering, chemilumi-nescence analysis and coupling technique. The system, condition, linear range, detection limit and ap-plications of each method are summarized. The development trend of spectrophotometric method for the determination of lead(Ⅱ) in the future is also discussed. Firstly, the reaction mechanism was ex-plored for the purpose of setting up a novel reasonable and simple spectrophotometric analysis system of lead(Ⅱ) to improve selectivity and reproducibility. Secondly, new ehromogenic reagents were devel-oped which are of high sensitivity, selectivity, stability, and non or low toxicity to improve detection methods. Thirdly, by combining with the high effective separation and enrichment technology analyti-cal process was simplified to reduce interference, realizing the accurate determination of trace lead(Ⅱ).
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维普
