Zeiner Michaela, Juranović Cindrić Iva, Majić Boris, Stingeder Gerhard
Division of Analytical Chemistry, Department of Chemistry, University of Natural Resources and Life Sciences, BOKU, Muthgasse 18, 1190 Vienna, Austria.
Department of Chemistry, Faculty of Science, University of Zagreb, Horvatovac 102a, Zagreb 10000, Croatia.
Int J Environ Res Public Health. 2017 Mar 24;14(4):341. doi: 10.3390/ijerph14040341.
In the present work, the accumulation of selected toxic and essential ultra-trace elements in fruits of service tree ( L.) were determined depending on harvest time. Samples were collected from the same sampling area in two different years and within one year in September and October (maturity state). Harvesting the fruits in the same area excludes the influence of metals taken up via roots, thus the impact of airborne contamination by heavy metal translocation can be studied. All samples were dried and digested using an acidic microwave assisted digestion system prior to quantification by inductively coupled plasma-sector field mass spectrometry (ICP-SFMS). The elements chosen were Arsenic and Cadmium as well as Lithium, Molybdenum, and Selenium. The Arsenic content rose with maturity in mesocarp. Cadmium found in the mesocarp was unaffected by ripeness. For Selenium and Molybdenum, no statistically significant effect of ripeness could be found on their content in mesocarp. Lithium could not be detected in the majority of fruit samples. Differences between the metal concentrations based on the year of harvest were found for Arsenic, Molybdenum, and Selenium, depending on precipitation. The drier the season, the more Arsenic was accumulated. For Molybdenum and Selenium, the opposite effect was observed.
在本研究中，根据收获时间测定了欧洲花楸果实中选定的有毒和必需超微量元素的积累情况。在两年中的同一采样区域以及同一年的9月和10月（成熟状态）采集样本。在同一区域收获果实排除了根系吸收金属的影响，因此可以研究重金属迁移导致的空气传播污染的影响。所有样品在通过电感耦合等离子体质谱仪（ICP-SFMS）进行定量分析之前，均使用酸性微波辅助消解系统进行干燥和消解。所选元素为砷、镉以及锂、钼和硒。中果皮中的砷含量随着成熟度增加。中果皮中发现的镉不受成熟度影响。对于硒和钼，未发现成熟度对它们在中果皮中的含量有统计学上的显著影响。大多数果实样品中未检测到锂。根据收获年份，砷、钼和硒的金属浓度存在差异，这取决于降水量。季节越干燥，积累的砷越多。对于钼和硒，则观察到相反的效果。
