Arsenic speciation in xylem sap of cucumber (<Emphasis Type="Italic">Cucumis sativus</Emphasis> L.) |
| |
Authors: | Victor?G?Mihucz Enik??Tatár István?Virág Edit?Cseh Ferenc?Fodor Email author" target="_blank">Gyula?ZárayEmail author |
| |
Institution: | 1.Joint Research Group of Environmental Chemistry of the Hungarian Academy of Sciences and L. E?tv?s University,Budapest,Hungary;2.Hungarian Satellite Centre of Trace Elements Institute to UNESCO,Budapest,Hungary;3.Department of Inorganic and Analytical Chemistry,L. E?tv?s University,Budapest,Hungary;4.Department of Plant Physiology,L. E?tv?s University,Budapest,Hungary |
| |
Abstract: | Flow injection analysis (FIA) and high-performance liquid chromatography double-focusing sector field inductively coupled
plasma mass spectrometry (HPLC-DF-ICP-MS) were used for total arsenic determination and arsenic speciation of xylem sap of
cucumber plants (Cucumis sativus L.) grown in hydroponics containing 2 μmol dm−3 arsenate or arsenite, respectively. Arsenite As(III)], arsenate As(V)] and dimethylarsinic acid (DMA) were identified in
the sap of the plants. Arsenite was the predominant arsenic species in the xylem saps regardless of the type of arsenic treatment,
and the following concentration order was determined: As(III) > As(V) > DMA. The amount of total As, calculated taking into
consideration the mass of xylem sap collected, was almost equal for both treatments. Arsenite was taken up more easily by
cucumber than arsenate. Partial oxidation of arsenite to arsenate (<10% in 48 h) was observed in the case of arsenite-containing
nutrient solutions, which may explain the detection of arsenate in the saps of plants treated with arsenite. |
| |
Keywords: | Plants Xylem Arsenic Speciation HPLC ICP-MS |
本文献已被 PubMed SpringerLink 等数据库收录! |
|