...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Advances in Research >Assessment of Total Hydrocarbon Concentration in Four Fish Species of Degele Community, Nigeria and Their Dietary Intake in the Populace
【24h】

Assessment of Total Hydrocarbon Concentration in Four Fish Species of Degele Community, Nigeria and Their Dietary Intake in the Populace

机译：尼日利亚德杰勒社区四种鱼类的总烃浓度及其在平民中的饮食摄入量评估

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

摘要

Aims: To assess concentration of total petroleum hydrocarbons (TPHs) in four common fish species of Degele community, Nigeria and estimate their dietary intake in the populace through the consumption of studied fish species. Study Design: Factorial design. Place and Duration of Study: Degele, a fishing community in Sapele, Niger Delta, Nigeria between April to August, 2010. Methodology: Four species of fish namely Tilapia ( Oreochromis niloticus ), Catfish ( Clarias gariepinus and Heterobranchus longifilis ), and Liza falcipinnis were collected from River Aqurinrin by the help of local fishermen. Fish were samples were stored at -20°C until further analysis. The scales ( O. niloticus ) were sloughed off and muscle tissues were dissected. Gas chromatography with flame ionization detector (GC-FID) was used for the evaluation of TPHs. Dietary intake concentration was calculated by multiplying the PAHs concentration measured in each species of fish by the per capita consumption for Nigeria. Results: The concentration of aliphatic hydrocarbon in Clarias gariepinus ranged from non-detectable level of 0.001 to 46.7±16.7 μg/kg; wet weight.; Heterobranchus longifilis (0.001 to 42.7±17.4 μg/kg; wet weight); Oreochromis niloticus (0.001 to 1123.70±952.10 μg/kg; wet wt); Liza falcipinnis (0.001 to 29.0±1.4 μg/kg; wet wt). The highest level of aliphatic hydrocarbon concentration was obtained in Oreochromis niloticus . The less carcinogenic polyaromatic hydrocarbon of lower molecular weight (LMW PAHs) was detected with clearly observed naphthalene and its substituents in all the studied fish species. The more carcinogenic high molecular weight (HMW) PAHs (BaA, BbF, BkF, BaP,and InP) were not detected in the fish samples analysed. There was significant difference ( P = 0.05) in the ΣAliphatic and ΣPAHs concentrations among the fish species. However, the levels are below EU recommended limit of 2μg/kg;wet weight for edible fish. The average intake of PAHs through fish consumption was calculated to be 0.02 – 0.94 mg/kg;body weight/day ( O. niloticus ), 0.02–0.12 mg/kg;body weight/day ( C. gariepinus ), 0.12–0.16 mg/kg;body weight/day ( H. longifilis ) and 0.14–0.58 mg/kg;body weight/day ( L. falcipinnis ). O. niloticus contributed to the highest intake. Conclusion: The observed levels of TPH in fish species from this study indicate that River Aqurinrin in Degele community is not highly contaminated with petroleum hydrocarbons. Therefore, Degele community is less exposed to carcinogenic health risks associated with the consumption of the studied fish. However, continuous monitoring programme should be formulated and conducted to ensure that the concentrations of petroleum hydrocarbons is within the baseline levels established in the present study.
机译：目的：评估尼日利亚Degele社区的四种常见鱼类中总石油烃（TPHs）的浓度，并通过食用所研究的鱼类来估计其在平民中的饮食摄入量。研究设计：析因设计。研究的地点和持续时间：Degele，一个在尼日利亚尼日尔三角洲Sapele的捕鱼社区，于2010年4月至8月之间。方法：四种鱼类，分别是罗非鱼（Oreochromis niloticus），Cat鱼（Clarias gariepinus和Heterobranchus longifilis）和Liza falcipinnis是在当地渔民的帮助下从阿奎林林河采集的。将鱼样品保存在-20°C下直至进一步分析。去除鳞片（O. niloticus）并解剖肌肉组织。带有火焰离子化检测器的气相色谱仪（GC-FID）用于评估TPH。通过将每种鱼中测得的PAHs浓度乘以尼日利亚的人均消费量来计算饮食摄入浓度。结果：山毛榉中的脂肪烃浓度范围为0.001至46.7±16.7μg/ kg。湿重。长杂种（0.001至42.7±17.4μg/ kg;湿重）;尼罗罗非鱼（0.001至1123.70±952.10μg/ kg;湿重）;莉莎恶性疟原虫（0.001至29.0±1.4μg/ kg;湿重）。尼罗罗非鱼（Oreochromis niloticus）的脂肪烃浓度最高。在所有研究的鱼类中均检测到了具有较低致癌性的较低分子量的聚芳烃（LMW PAHs），并带有清晰可见的萘及其取代基。在所分析的鱼样品中未检测到更具致癌性的高分子量（HMW）PAH（BaA，BbF，BkF，BaP和InP）。在鱼类中，Σ脂族和ΣPAHs的浓度存在显着差异（P = 0.05）。但是，该水平低于欧盟建议的2μg/ kg的限量;食用鱼的湿重。经计算，通过食用鱼类摄入的多环芳烃平均摄入量为0.02 – 0.94 mg / kg;体重/天（尼罗罗非鱼），0.02–0.12 mg / kg;体重/天（C. gariepinus），0.12-0.16 mg / kg;体重/天（H. longifilis）和0.14-0.58 mg / kg;体重/天（L. falcipinnis）。尼罗罗非鱼的摄入量最高。结论：从这项研究中观察到的鱼类中TPH的水平表明Degele社区的Aqurinrin河没有被石油烃高度污染。因此，Degele社区较少遭受与食用鱼类有关的致癌健康风险。但是，应制定并进行连续的监测计划，以确保石油烃的浓度在本研究确定的基线水平之内。

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