期刊
JOURNAL OF SEPARATION SCIENCE
卷 36, 期 4, 页码 789-795出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/jssc.201200744
关键词
Graphene functionalized with (3-aminopropyl) triethoxysilane; Polycyclic aromatic hydrocarbon; SPE; Water samples
资金
- National Natural Science Foundation of China [20805040, 21075106]
- Program for Science & Technology Innovation Talents in Universities of Henan Province [2010HASTIT025]
- Excellent Youth Foundation of He'nan Scientific Committee [104100510020]
The graphene functionalized with (3-aminopropyl) triethoxysilane was synthesized by a simple hydrothermal reaction and applied as SPE sorbents to extract trace polycyclic aromatic hydrocarbons (PAHs) from environmental water samples. These sorbents possess high adsorption capacity and extraction efficiency due to strong adsorption ability of carbon materials and large specific surface area of nanoparticles, and only 10 mg of sorbents are required to extract PAHs from 100 mL water samples. Several condition parameters, such as eluent and its volume, adsorbent amount, sample volume, sample pH, and sample flow rate, were optimized to achieve good sensitivity and precision. Under the optimized extraction conditions, the method showed good linearity in the range of 1-100 mu g/L, repeatability of the extraction (the RSDs were between 1.8 and 2.9%, n=6), and satisfactory detection limits of 0.029-0.1 mu g/L. The recoveries of PAHs spiked in environmental water samples ranged from 84.6 to 109.5%. All these results demonstrated that this new SPE technique was a viable alternative to conventional enrichment techniques for the extraction and analysis of PAHs in complex samples.
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