College of Science, China Agricultural University, Beijing 100193, PR China.
Sci Total Environ. 2013 Feb 1;444:224-30. doi: 10.1016/j.scitotenv.2012.11.060. Epub 2012 Dec 27.
Graphene is a novel carbon nanomaterial with an ultra-high specific surface area. In this paper, we explored graphene as adsorbent for efficient enrichment of 15 phthalate acid esters (PAEs) under different water matrixes (ultrapure water, river and sea). A simple and inexpensive method of dispersive solid-phase extraction (DSPE) combined with gas chromatography-mass spectrometry (GC-MS) was used and acceptable results were provided for most PAEs with overall average recoveries between 71 and 117%. The extraction conditions such as the amount of graphene, the desorption solvent, adsorption time, desorption time and the solution pH were optimized. Finally, the method was applied for the determination of PAEs in environmental water samples including 9 rivers and 2 seas from 7 areas in China.
石墨烯是一种新型碳纳米材料，具有超高的比表面积。本文探讨了将石墨烯作为吸附剂，在不同水基质（超纯水、河水和海水）下对 15 种邻苯二甲酸酯（PAEs）进行高效富集。采用简单、廉价的分散固相萃取（DSPE）结合气相色谱-质谱联用（GC-MS）法，对大多数 PAEs 提供了可接受的结果，总体平均回收率在 71%至 117%之间。优化了萃取条件，如石墨烯用量、解吸溶剂、吸附时间、解吸时间和溶液 pH 值。最后，该方法应用于测定来自中国 7 个地区的 9 条河流和 2 个海域的环境水样中的 PAEs。
