TY - JOUR T1 - Substrateless graphene fiber: a sorbent for solid-phase microextraction. AU - Luo,Yan-Bo, AU - Yuan,Bi-Feng, AU - Yu,Qiong-Wei, AU - Feng,Yu-Qi, Y1 - 2012/10/23/ PY - 2012/08/15/received PY - 2012/10/12/revised PY - 2012/10/15/accepted PY - 2012/11/8/entrez PY - 2012/11/8/pubmed PY - 2013/4/12/medline SP - 9 EP - 15 JF - Journal of chromatography. A JO - J Chromatogr A VL - 1268 N2 - In current study, a substrateless graphene fiber was successfully prepared by a simple hydrothermal strategy and used as solid-phase microextraction (SPME) sorbent. Five organochlorine pesticides (OCPs) were employed as model analytes to evaluate the performance of as-prepared graphene fiber. The results showed that the graphene fiber exhibited higher extraction efficiencies, higher thermal stability (up to 310°C), better reproducibility, and longer service life (more than 180 times reuse) than commercial fibers. In addition, the method for the determination of OCPs was proposed by coupling headspace (HS)-SPME technique with gas chromatography/electron capture detector (HS-SPME-GC/ECD). The proposed HS-SPME-GC/ECD method showed low limits of detection (0.83-11.5 ng/L), wide linear dynamic ranges (more than 2 orders of magnitude), and acceptable reproducibility (RSD<10.9%). Finally, the proposed method was successfully applied to the analysis of OCPs in environmental water samples with good recoveries (81-121%) and satisfactory precisions (RSD<9%). SN - 1873-3778 UR - https://www.unboundmedicine.com/medline/citation/23131764/Substrateless_graphene_fiber:_a_sorbent_for_solid_phase_microextraction_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0021-9673(12)01607-X DB - PRIME DP - Unbound Medicine ER -