DUNMi-na,SONGYan,WANGLan,et al.High-resolution Mass Spectrometry-based Screening and Analysis of Organic Matters in Shallow Reservoirs Located in Lower Reaches of the Yellow River[J].China Water & Wastewater,2025,41(19):80-87.
黄河下游浅型水库有机物的高分辨质谱筛查分析
- Title:
- High-resolution Mass Spectrometry-based Screening and Analysis of Organic Matters in Shallow Reservoirs Located in Lower Reaches of the Yellow River
- 关键词:
- 浅型水库; 有机物; 高分辨气相色谱-质谱; 非靶向筛查; 黄河下游
- Keywords:
- shallow reservoir; organic matter; high-resolution gas chromatography-mass spectrometry; non-targeted screening; lower reaches of the Yellow River
- 摘要:
- 为全面了解黄河下游浅型水库水体中有机物的污染特征，采用固相萃取技术对黄河下游3 座浅型水库水样进行富集，通过高分辨气相色谱-质谱法对水样中有机物进行非靶向筛查，并对水体中有机物的可能污染来源进行分析。同时对比分析了丰水期和枯水期的水库水质特征差异。结果表明，3 座水库枯水期有机物种类高于丰水期，这可能与水库水量、气温及水力滞留等因素有关，枯水期有机物检出数量分别为202、263及242 种，其中烷烃类、酯类及有机酸类物质检出比例较高。3座水库水体中35种有机物被普遍检出，其中二氯苯、菲和阿特拉津被检出且响应强度较高，表明该地区水库水质污染与化工及农业生产明显相关。
- Abstract:
- Solid?phase extraction was applied to concentrate organic matters from water samples collected at three shallow reservoirs to comprehensively investigate the pollution characteristics of organic matters in the water of shallow reservoirs located in the lower reaches of the Yellow River. Subsequently, high?resolution gas chromatography-mass spectrometry (GC-MS) was utilized for non?targeted screening of organic matters in the samples, followed by an analysis of potential pollution sources contributing to organic contamination in the reservoir waters. Meanwhile, the variations in water quality characteristics of the reservoir between the wet season and the dry season were systematically compared and analyzed. The diversity of organic matters observed during the dry season in the three reservoirs was higher than that recorded during the wet season. This variation may be attributed to factors such as water volume, temperature, and hydraulic retention time within the reservoirs. The number of organic matter types detected during the dry season was 202, 263, and 242, respectively, with relatively high detection rates of alkanes, esters, and organic acids. 35 types of organic matters were commonly detected in the water bodies of three reservoirs. Among them, dichlorobenzene, phenanthrene, and atrazine were identified with relatively high response intensities, suggesting that the water quality pollution in these reservoirs was closely associated with chemical and agricultural activities.
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