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首页> 外文期刊>Environmental Science & Technology >Measurements of Linear Alkylbenzenes by GC/MS with Interference from Tetrapropylene-Based Alkylbenzenes: Calculation of Quantitation Errors Using a Two-Component Model
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Measurements of Linear Alkylbenzenes by GC/MS with Interference from Tetrapropylene-Based Alkylbenzenes: Calculation of Quantitation Errors Using a Two-Component Model

机译：气相色谱/质谱联用四丙烯基烷基苯的干扰测量直链烷基苯：使用两组分模型计算定量误差

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摘要

Linear alkylbenzenes (LABs) and tetrapropylene-based alkylbenzenes (TABs) are often used as molecular tracers of domestic waste inputs. Due to the overlapping usage of LABs and TABs in the past, these compounds have been found to co-exist in environmental samples. They elute closely under normal gas chromatographic conditions and contain similar mass spectral ion fragments, which makes it difficult to separate contributions from LABs and TABs even by the gas chromatography/mass spectrometry (GC/MS) method. This paper presents a two-component model that deals with the quantitation error (E) in measurements of LABs (or TABs) because of the interference from TABs (or LABs). By taking advantage of the GC/MS chromatographic characteristics of LABs and TABs, a simple equation derived from the model can calculate E with the knowledge of relative abundances of m/z91 and m/z 119 in samples, LAB standards, and TAB standards. The model was applied to a sediment core collected from Santa Monica Bay near the Hyperion 7-mi sludge outfall. This model is also applicable to other similar two-component systems, as long as they satisfy the assumptions made under the present study.
机译：直链烷基苯（LAB）和四丙烯基烷基苯（TAB）通常用作生活垃圾投入的分子示踪剂。由于过去LAB和TAB的重叠使用，已发现这些化合物共存于环境样品中。它们在正常气相色谱条件下会紧密洗脱，并包含相似的质谱离子碎片，即使通过气相色谱/质谱（GC / MS）方法，也很难将LAB和TAB的成分分开。本文提出了一个由两部分组成的模型，该模型用于处理LAB（或TAB）的测量中的定量误差（E），因为TAB（或LAB）会产生干扰。通过利用LAB和TAB的GC / MS色谱特性，从模型导出的简单方程式可以利用样品，LAB标准品和TAB标准品中m / z91和m / z 119的相对丰度来计算E。该模型应用于从圣塔莫尼卡湾（Santa Monica湾）靠近Hyperion 7-mi污泥排污口收集的沉积物岩心。该模型也适用于其他类似的两组分系统，只要它们满足本研究中所做的假设即可。

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  • 来源
    《Environmental Science & Technology》 |1996年第1期|p.322-328|共7页
  • 作者

    EDDY Y. ZENG; CHARLIE C. YU;

  • 作者单位

    Southern California Coastal Water Research Project, 7171 Fenwick Lane, Westminster, California 92683;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 环境化学;
  • 关键词

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