在饮用水和环境水中的挥发性化碳化合物的确定通过头空间气体染色学
Weifei Mo1,2, Hongmei Hu1, Jiangmei Yu3
1Key Laboratory of Sustainable Utilization of Technology Research for Fisheries Resources of Zhejiang Province, Department of Marine and Fishery Environment, Zhejiang Marine Fisheries Research Institute, Zhoushan 316021, China.
一种新的头部气体染色法准确地检测到水中的14种挥发性化碳化合物 (VHHs). 这种分析对于监测饮用水和环境水源中的VHH至关重要.
科学领域:
- 环境化学环境化学
- 分析化学 分析化学
背景情况:
- 挥发性碳化合物 (VHHs) 是环境污染物,由于其每年释放,会对公共健康产生重大影响.
- 为了评估环境和健康风险,有效监测各种水表中的VHHs至关重要.
研究的目的:
- 开发和优化一种简单,快速,灵敏和自动化的头部气体染色法 (GC) 方法,用于确定水样中的VHHs.
- 应用优化方法对14种VHHs在各种水类,包括饮用水和环境来源的定量分析.
主要方法:
- 使用DB-35 MS毛细管柱和电子捕获检测的头空间GC方法的优化.
- 实验条件包括一个含有20%NaCl的10毫升水样,在60°C动35分钟,分离比例为12.5:1.
- 达到了VHHs的低检测极限 (LOD),范围为0.01至0.6μg/L.
主要成果:
- 该方法成功地在饮用水和环境水样本中分离和量化了14个VHH.
- 不同的水矩阵的VHH总平均度有显著差异:34.962μg/L (自来水),26.183μg/L (用旧过器净化水),3.228μg/L (海水) 和647.344μg/L (废水).
- 值得注意的是,在使用新的过元件净化水中没有检测到VHH,这表明过的有效性.
结论:
- 开发的头空间GC方法为水中VHH的确定提供了可靠和敏感的方法.
- 在各种水类中,VHH水平存在很大差异,这凸显了污染概况中来源和处理的重要性.
- 新过器在水中没有VHHs,这凸显了过对减轻污染的有效性.
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