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Validation and field testing of LC-MS/MS analysis of animal waste markers.

机译:LC-MS / MS分析动物废物标记物的验证和现场测试。

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摘要

Contamination of water by animal wastes degrades water quality and may cause disease in humans and animals.1 Determining the individual sources of the contamination is important both to allow effective remediation of polluted waters and to identify waters where human disease vectors may be present.1 Bile acids and fecal sterols are molecular markers which can identify which animal species may have contributed to contamination of a particular water.2 The profiles of relative concentrations of bile acids and fecal sterols are characteristic of the waste of individual animal species.2 LC-MS/MS affords a potentially much superior means of analyzing these compounds in comparison with the traditional GC-MS methods. We have developed and validated an LC-MS/MS method for analysis of animal bile acids and fecal sterols. The method employs a standard C-18 column and a gradient of methanol:acetonitrile and 0.2 mM ammonium acetate in water. We have also developed a preconcentration method for the markers using C-18 extractions discs. The method has been tested by analysis of local sewage treatment plant effluent and a farm stream polluted by cattle waste.
机译:动物废物对水的污染会降低水质,并可能导致人畜共患疾病。1确定污染的各个来源对于有效地修复受污染的水和识别可能存在人类病媒的水都很重要。1胆汁酸和粪便固醇是分子标记,可以识别哪些动物物种可能造成了特定水的污染。2胆汁酸和粪便固醇的相对浓度曲线是各个动物物种浪费的特征。2LC-MS /与传统的GC-MS方法相比,MS提供了一种潜在地优越的分析这些化合物的方法。我们已经开发并验证了用于分析动物胆汁酸和粪便固醇的LC-MS / MS方法。该方法使用标准的C-18色谱柱,以及甲醇:乙腈和0.2 mM醋酸铵在水中的梯度。我们还开发了使用C-18提取盘对标记物进行预浓缩的方法。该方法已通过分析当地污水处理厂的废水和被牛粪污染的农场溪流进行了测试。

著录项

  • 作者

    Velaga, Sree Harshitha.;

  • 作者单位

    Tennessee Technological University.;

  • 授予单位 Tennessee Technological University.;
  • 学科 Analytical chemistry.;Organic chemistry.
  • 学位 M.S.
  • 年度 2016
  • 页码 74 p.
  • 总页数 74
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 地下建筑;
  • 关键词

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