• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>American Journal of Analytical Chemistry >Total Reflection X-Ray Fluorescence Analysis of Toxic Metals in Fish Tissues
【24h】

Total Reflection X-Ray Fluorescence Analysis of Toxic Metals in Fish Tissues

机译：鱼组织中有毒金属的全反射X射线荧光分析

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The concentration of Cr, Ni, Cu, Zn, Hg and Pb, considered like toxic, was evaluated in fish tissues by means the total reflection X-Ray Fluorescence technique (TXRF). Grass carp (Ctenopharygodon idella) samples were collected from six regions of the Tepuxtepec Dam which was used as a water reservoir and fish production for the local population. Fish tissues: gills, liver, kidney and muscle were analyzed in triplicate using a TXRF spectrometer “TX-2000 Ital Structures” with a Si(Li) detector and a resolution of 140 eV (FWHM) at Mn Kα and Mo tube (40 kV, 30 mA) with 17.4 KeV excitation energy. The mean concentration of metals in tissues decrease in the sequence: Kidney ≈ Gills > Liver > Muscle; the range of concentration for Zn was 26.68 - 816.67 mg/Kg followed by Cu: 1.18 - 35.81 mg/Kg, Cr: 1.10 - 9.30 mg/Kg, Ni: 0.40 - 3.80 mg/Kg, Pb: <0.02 - 1.92 mg/Kg and Hg: <0.03 - 1.97 mg/Kg. Chromium and mercury concentrations slightly exceed the limits for fish proposed by FAO/WHO and Mexican Legislation for human consumption in the edible parts of fish from each one of the regions of the Tepuxtepec Dam. The results show that metal accumulation in herbivorous carp tissues was higher in regions 1, 2 and 3 than the others, which could be due to the influence of Lerma River, one of the most polluted rivers of Mexico.
机译：通过全反射X射线荧光技术（TXRF）对鱼组织中的Cr，Ni，Cu，Zn，Hg和Pb的浓度进行了评估，被认为具有毒性。从Tepuxtepec大坝的六个地区收集了草鱼（Ctenopharygodon idella）样品，这些水被用作当地居民的蓄水池和鱼类生产。鱼类组织：使用带有Si（Li）探测器的TXRF光谱仪“ TX-2000 Ital Structures”一式三份分析g，肝，肾和肌肉，在MnKα和Mo管（40 kV）下的分辨率为140 eV（FWHM） （30 mA）时，激发能量为17.4 KeV。组织中金属的平均浓度按以下顺序降低：肾脏≈G>肝脏>肌肉;锌的浓度范围为26.68-816.67 mg / Kg，其次是Cu：1.18-35.81 mg / Kg，Cr：1.10-9.30 mg / Kg，Ni：0.40-3.80 mg / Kg，Pb：<0.02-1.92 mg /千克和汞：<0.03-1.97毫克/千克。铬和汞的浓度略高于粮农组织/世界卫生组织和墨西哥立法所提议的人类对特普特斯佩克大坝每个区域可食用鱼的食用量的限制。结果表明，草食性鲤鱼组织中的金属积累在1、2和3区比其他地区高，这可能是由于墨西哥污染最严重的河流之一勒马河的影响。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号