PCB trace enrichment from contaminated natural water at the sub ppt level on C18 microcartridges
PCB trace enrichment from contaminated natural water at the sub ppt level on C18 microcartridges
复制标题
C18 微盒上受污染的天然水中的 PCB 痕量富集量达到亚 ppt 水平
DOI：
--
复制
发表时间：
1987
期刊：
影响因子：
--
通讯作者：
Y. Vandaele
中科院分区：
文献类型：
--
作者：
J. Thomé;Y. Vandaele
摘要本文介绍了一种新的微量富集污染水中PCB的方法。该程序涉及在C18微型检测盒上定量吸附多氯联苯。该吸附剂是具有十八烷基基团的共价键合的硅胶。多氯联苯保留在改性表面上，随后通过适当的非极性溶剂洗脱，然后进行高分辨率毛细管气相色谱分析。在0.01至10 ppb的浓度范围内对多氯联苯的回收效率进行了研究。这种提取方法似乎导致高性能和快速净化溶解在天然水中的PCB。平均回收率在10 min内达到95.2%（SD=6.1%）。因此，使用这种PCB痕量富集的简单性使其对现场采样以及实验室实验都很有用。
Abstract A novel micromethod of PCB trace enrichment from contaminated water at the sub ppt level is described. This procedure involves quantitative adsorption of PCB on C18 microcartridges. This sorbent is a covalently bonded silicagel with octadecyl groups. PCBs are retained on the modified surface and subsequently eluted by appropriate apolar solvent prior to high resolution capillary gas chromatography. PCB recovery efficiency has been investigated in the concentration range from 0.01 to 10 ppb. This extraction method appears to result in high performance and rapid purification of dissolved PCB in natural water. The mean recovery percentage reached indeed 95.2% (SD=6.1%) within an overall procedure ranging 10min. As a consequence, the simplicity of use of this PCB trace enrichment makes it useful for field sampling as well as for laboratory experiments.