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首页> 外文期刊>Journal of Encapsulation and Adsorption Sciences >Determination and Quantification of Vanadium(V) in Environmental Samples Using Chemically Modified Chitosan Sorbent
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Determination and Quantification of Vanadium(V) in Environmental Samples Using Chemically Modified Chitosan Sorbent

机译：化学修饰的壳聚糖吸附剂对环境样品中钒的测定与定量

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The application of biopolymers such as chitosan is one of the emerging sorption methods for the removal of metal ions, even at low concentrations. A rapid, sensitive and selected method is de- scribed for preconcentrative determination of vanadium(V) using the synthesized 3-Hydroxyben- zaldehyde-4 Amino antipyrine (HBAP), which was chemically immobilized on chitosan. This is easy to prepare in comparison to many other sorbents. The synthesized sorbent material was se- lective to vanadium(V) within a better response time of 30 min. The method was selective in presence of other foreign ions like Cl-, F-, , , Na+, Ca2+, Zn2+, Fe3+, Fe2+, Cu2+, Cr3+, EDTA, Mn2+, Co2+ and Ni2+. The calibration plots were linear over the concentration range of 0.5 μg·L-1 to 7 μg·L-1 of vanadium(V). These values are 100 times lower than by the direct determination of vanadium by FAAS. The developed procedure was reproducible with a relative standard deviation of 2.84%. The developed sorbent was successfully applied for the determination of vanadium(V) in real water and soil samples. Unlike most preconcentration procedures, the present enrichment method allowed for a rapid and reliable determination of vanadium(V) in environmental samples by the simple and routinely available flame atomic absorption spectrometry technique.
机译：生物聚合物如壳聚糖的应用是新兴的吸附方法之一，即使在低浓度下也能去除金属离子。本文描述了一种快速，灵敏且精选的方法，用于化学合成固定在壳聚糖上的合成的3-羟基苯甲醛4氨基安替比林（HBAP）进行富集前钒的测定。与许多其他吸附剂相比，这很容易制备。合成的吸附剂材料可在30分钟的较好响应时间内选择钒（V）。该方法在其他外来离子（如Cl-，F-，...，Na +，Ca2 +，Zn2 +，Fe3 +，Fe2 +，Cu2 +，Cr3 +，EDTA，Mn2 +，Co2 +和Ni2 +）存在下具有选择性。校准曲线在钒（V）的0.5μg·L-1至7μg·L-1的浓度范围内呈线性关系。这些值比FAAS直接测定钒低100倍。所开发的程序可重现，相对标准偏差为2.84％。研制的吸附剂已成功用于实际水和土壤样品中钒的测定。与大多数预浓缩程序不同，本富集方法允许通过简单且常规可用的火焰原子吸收光谱技术快速可靠地测定环境样品中的钒（V）。

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