Application of HPLC to measure vanadium in environmental,biological and clinical matrices期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

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Application of HPLC to measure vanadium in environmental,biological and clinical matrices

Institution:	1. Dept. Interdisciplinary Studies, Zayed University, Dubai, United Arab Emirates;2. Dept. Chemistry and Cell and Molecular Biology, Colorado State University, Fort Collins, CO 80513, United States

Abstract:	Vanadate and vanadium compounds exist in many environmental, biological and clinical matrices, and despite the need only limited progress has been made on the analysis of vanadium compounds. The vanadium coordination chemistry of different oxidation states is known, and the result of the characterization and speciation analysis depends on the subsequent chemistry and the methods of analysis. Many studies have used a range of methods for the characterization and determination of metal ions in a variety of materials. One successful technique is high performance liquid chromatography (HPLC) that has been used mainly for measuring total vanadium level and metal speciation. Some cases have been reported where complexes of different oxidation states of vanadium have been separated by HPLC. Specifically reversed phase (RP) HPLC has frequently been used for the measurement of vanadium. Other HPLC methods such as normal phase, anion-exchange, cation-exchange, size exclusion and other RP-HPLC modes such as, ion-pair and micellar have been used to separate selected vanadium compounds. We will present a review that summarizes and critically analyzes the reported methods for analysis of vanadium salts and vanadium compounds in different sample matrices. We will compare various HPLC methods and modes including sample preparation, chelating reagents, mobile phase and detection methods. The comparison will allow us to identify the best analytical HPLC method and mode for measuring vanadium levels and what information such methods provide with regard to speciation and quantitation of the vanadium compounds.

Keywords:	Vanadium HPLC separation Speciation Characterization Quantitation Environmental samples Biological samples Clinical samples 3 5-diBr-PADAP-Triton X-100"} {"#name":"keyword" "$":{"id":"k0050"} "$$":[{"#name":"text" "_":"3 5-dibromo-pyridylazo diethylaminophenol-Triton X-100 5-Br-PADAP"} {"#name":"keyword" "$":{"id":"k0060"} "$$":[{"#name":"text" "_":"2-(5-bromo-2-pyridylazo)-5-diethylaminophenol 5-Br-PAPS"} {"#name":"keyword" "$":{"id":"k0070"} "$$":[{"#name":"text" "_":"2-(5-bromo-2-pyridylazo)-5-(N-propyl-N-sulfopropylamino)-phenol 5-Br-QADEAP"} {"#name":"keyword" "$":{"id":"k0080"} "$$":[{"#name":"text" "_":"2-[2-(5-bromoquinolinylazo)]-5-diethylaminophenol 4-(5-nitro-2-pyridylazo) resorcinol AE"} {"#name":"keyword" "$":{"id":"k0100"} "$$":[{"#name":"text" "_":"anion exchange AES"} {"#name":"keyword" "$":{"id":"k0110"} "$$":[{"#name":"text" "_":"atomic emission spectroscopy APCI–MS"} {"#name":"keyword" "$":{"id":"k0120"} "$$":[{"#name":"text" "_":"Atmospheric Pressure 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