• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Environment and Ecology Research >Assessment of Microbial Quality of Vegetables Irrigated with Polluted Waters in Dar es Salaam City, Tanzania
【24h】

Assessment of Microbial Quality of Vegetables Irrigated with Polluted Waters in Dar es Salaam City, Tanzania

机译：坦桑尼亚达累斯萨拉姆市污水灌溉蔬菜的微生物质量评估

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

摘要

This study was undertaken to assess microbial quality of fresh vegetables irrigated with polluted waters from Msimbazi River in Dar es Salaam City. Samples of river water were taken from seven sampling stations along Msimbazi River stretching 20.4 km from Pugu to Jangwani and its tributary (Ubungo River) at Mabibo. Vegetable samples of 5 different species were taken from two different vegetable gardens in different locations along Msimbazi river valley and its tributary (Ubungo river), and from six markets including one super market. The examination of samples was carried out in accordance with the standard methods. Results revealed that water from the Msimbazi River contains high concentration of salts and pathogenic organisms. Fecal coliforms were found in all river water samples with a maximum count of 2.1x10~(6) cfu/100ml. Pollution of the river was increasing downstream and varies seasonally with wet season having poorer water quality than dry season. Vegetables from all the markets including super market were highly contaminated with fecal coliforms of up to 10~(8) Cfu/kg-wet vegetables. Pathogenic organisms were detected on vegetables and all river water samples examined had Ascaris Lumbricoides except for the sample collected at Pugu station. Fresh vegetables were contaminated with pathogenic organisms such as Escherichia coli, Citrobacter ssp, Proteus ssp, Klebsiella ssp, Salmonella spp and Basillus spp. Vegetable samples collected from the markets were more contaminated than those collected from the gardens. High number of fecal coliforms in the markets was due to poor handling of these vegetable by contaminated hands and sprinkling of vegetables with polluted water to keep vegetables moist. It was concluded that water used for irrigating vegetables along river Msimbazi was highly polluted and vegetables from gardens and markets are not safe for consumption.
机译：这项研究旨在评估达累斯萨拉姆市姆辛巴齐河灌溉的新鲜蔬菜的微生物质量。从沿普古至Jangwani延伸20.4公里的Msimbazi河的七个采样站采集了河水样本，该河的支流位于Mabibo。 5种不同种类的蔬菜样品是从Msimbazi河谷及其支流（Ubungo河）沿不同地点的两个不同菜园以及六个市场（包括一个超级市场）中采集的。样品的检查按照标准方法进行。结果表明，姆西巴兹河的水含有高浓度的盐和致病生物。在所有河水样品中均发现粪便大肠菌群，最大计数为2.1x10〜（6）cfu / 100ml。河流的污染在下游增加，并且随着雨季的水质比旱季差而随季节变化。包括超级市场在内的所有市场的蔬菜都受到高达10〜（8）Cfu / kg湿菜的粪便大肠菌的高度污染。在蔬菜上检测到病原性生物，除普古站采集的样本外，所有检查的河水样本均含有A虫。新鲜蔬菜被诸如大肠杆菌，柠檬酸杆菌属，变形杆菌属，克雷伯菌属，沙门氏菌属和巴斯德氏菌属等致病生物污染。从市场上收集的蔬菜样本比从花园中收集的蔬菜样本受到的污染更大。市场上粪便大肠菌的数量很多，这是由于被污染的手对这些蔬菜的处理不当以及向蔬菜洒上污染水以保持蔬菜湿润。得出的结论是，用于沿姆辛巴齐河灌溉蔬菜的水被高度污染，并且花园和市场上的蔬菜不安全食用。

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