• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>RSC Advances >Distribution, contents and health risk assessment of heavy metal(loid)s in fish from different water bodies in Northeast China
【24h】

Distribution, contents and health risk assessment of heavy metal(loid)s in fish from different water bodies in Northeast China

机译：中国东北不同水体鱼中重金属（Loid）S的分布，内容和健康风险评估

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

This study aimed at investigating the accumulation and potential risks of eight metal(loid)s in fish from natural and culturing water samples in Northeast China. Chromium (Cr), nickel (Ni), copper (Cu), zinc (Zn), arsenic (As), cadmium (Cd), lead (Pb) and mercury (Hg) contents in 16 fish species (155 samples) and sediments of their habitats were analyzed. In general, the concentrations of these eight metal(loid)s in most fish samples are lower than the guideline levels and legal limits, and the Pb and Hg level in 0.65% of samples were exceeded the quality standards in China. The Cr, As, Cd and Pb levels in most fish samples are less than those reported in previous studies. Nonetheless, Hg levels in these fish samples are significantly higher than those reported in previous studies conducted in other regions. Different from the wild fish, significant positive correlations are found between Cr, Ni, As and Cd concentrations in cultured fish and those in pond sediment (P < 0.05), which might be due to the closed static water environment and concentrated feeding operations. Cu, Zn, As and Hg concentrations differed significantly among wild species, while Cu and Zn concentrations differed significantly among cultured species (P < 0.05), which might be because of the different feeding and foraging habitats. The target hazard quotients (THQs) at high exposure levels of target metal(loid)s in the studied fish were below 1 (except for Hg), and the carcinogenic risk indices of Cr, As, and Cd were less than 10(-4). The levels of metal(loid)s (except for Hg) in the studied fishes fell within an acceptable range, but more attention should be paid to the potential carcinogenic risks.
机译：本研究旨在调查来自中国东北地区的自然和培养水样中八种金属（懒惰）S中的占用和潜在风险。 16个鱼类（155个样品）和沉积物中的铬（Cr），镍（Ni），铜（Cu），氧化锌（Zn），砷（CD），砷（CD），铅（Pb）和汞（Hg）含量他们的栖息地分析了。通常，大多数鱼类样品中这八种金属（Loid）S的浓度低于指南水平和法律限制，Pb和Hg水平在0.65％的样本中被超过了中国的质量标准。大多数鱼类样本中的Cr，如Cd和Pb水平小于先前研究中报告的CD和Pb水平。尽管如此，这些鱼类样品中的Hg水平明显高于在其他地区进行的先前研究中报告的水平。与野生鱼类不同，在培养的鱼中的Cr，Ni，As和Cd浓度和池塘沉积物中的浓度（P <0.05）之间存在显着的正相关性，这可能是由于闭合静电环境和浓缩的饲养操作。野生物种中Cu，Zn，As和Hg浓度显着差异，而Cu和Zn浓度在培养物种（P <0.05）之间有显着不同（P <0.05），这可能是由于不同的饲养和觅食栖息地。在研究的鱼中靶金属（LOID）S的高曝光水平的目标危害等分（THQs）低于1（HG除外），CR的致癌风险指数小于10（-4 ）。学习鱼类中的金属水平（LOID）S（HG除外）在可接受的范围内下降，但应更多地关注潜在的致癌风险。

著录项

  • 来源
    《RSC Advances》 |2019年第57期|共10页
  • 作者

  • 作者单位
  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
  • 关键词

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