Multiwalled carbon nanotubes were exposed to hydrothermal treatment for obtaining graphene oxide nanoribbons (GONRs). The fabricated graphene oxide nanoribbons have been morphologically and compositionally characterized via FE-SEM, XRD, and FT-IR techniques. The as-synthesized GONRs have been used as sorbent phase for headspace solid-phase microextraction of phthalate esters (PEs) from aqueous solutions. In this regard, the GC–FID analysis route has been used for quantification of PEs. The new SPME fiber shows remarkable analytical figures of merit including broad dynamic linear ranges, low limits of detection, as well as good stability and reasonable relative standard deviations for evaluation of PEs. The linearity of the method for analysis of PEs including DnBP, DnPP, DEHP, DEHA, BBP, and DMP was between the range of 0.05–100, 0.05–100, 0.1–100, 0.1–100, 0.2–100, and 0.5–100 μg L⁻¹, respectively. The limits of detection (based on S/N = 3) and correlation coefficients were found to be in the range of 0.02–0.2 μg L⁻¹ and 0.9907–0.9952, correspondingly. The prepared GONR-coated SPME fiber shows larger extraction yield in comparison to pristine MWNTs and commercial PDMS SPME fibers. Furthermore, real sample analysis showed that there is no significant matrix effect for evaluation of PEs from environmental water samples and proposed method could be used for evaluation and determination of PEs from aqueous samples in a precise and accurate manner. The existence of functional groups, π–π interactions, as well as hydrogen bonding between adsorbent phase and PE analytes could be the reason for observing such a high extraction yield.

将多壁碳纳米管进行水热处理，以获得氧化石墨烯纳米带（GONR）。通过FE-SEM，XRD和FT-IR技术对制备的氧化石墨烯纳米带进行了形态和成分表征。合成后的GONR已用作吸附剂相，用于从水溶液中顶空固相微萃取邻苯二甲酸酯（PE）。在这方面，GC-FID分析方法已用于定量PEs。新型SPME纤维具有出色的分析品质因数，包括宽动态线性范围，低检测限以及良好的稳定性和合理的相对PE评估相对标准偏差。包括DnBP，DnPP，DEHP，DEHA，BBP和DMP在内的PE的分析方法的线性介于0.05-100、0.05-100、0.1-100，^-1。检出限（基于S / N = 3）和相关系数分别在0.02–0.2μgL ^-1和0.9907–0.9952之间。与原始的MWNT和商用PDMS SPME纤维相比，制备的GONR涂层的SPME纤维显示出更高的提取率。此外，实际样品分析表明，对环境水样品中的PE进行评价没有明显的基质效应，所提出的方法可用于精确，准确地评价和测定水性样品中的PE。官能团的存在，π-π相互作用以及吸附相与PE分析物之间的氢键可能是观察到如此高的提取率的原因。