The development of solid phase extraction (SPE) combined with the sensitive detection of surface-enhanced Raman spectroscopy (SERS) has been successfully applied for the analysis of complex environmental samples. In this work, a silver nanoplate-decorated copper membrane was fabricated as a recyclable SERS-active SPE substrate. The membrane was fabricated via modified galvanic displacement on a commercial copper membrane. Compared with filter paper SERS substrates, the as-synthesized substrate has relatively rapid heat conduction, which can lead to a greater temporal stability under continuous laser irradiation conditions. The relative standard deviation (RSD) value of the intensity change is 0.31%. The experimental results also showed that these substrates have a long life and are reproducible even after 5 cycles. The RSD was calculated to be 12.13%, which indicates that this method was recyclable. The signal intensity of filtering is almost 28 times higher than that of the traditional dropping method, which proves that the membrane has rapid extraction ability. The qualitative and quantitative detection of phorate was investigated based on a flow-through method. A good linearity (R² = 0.98) was achieved for phorate in the concentration range of 3.84 to 288 nmol L⁻¹. In addition, the simulated detection of phorate in actual water such as underground water, surface water, and drinking water was also studied. These results demonstrated its practical application to rapidly detect phorate in the real environment.

中文翻译：

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可回收银纳米板装饰铜膜用于加上表面增强拉曼散射检测固相萃取†

固相萃取（SPE）与表面增强拉曼光谱（SERS）的灵敏检测相结合的开发已成功地用于复杂环境样品的分析。在这项工作中，银纳米板装饰的铜膜被制成可回收的SERS活性SPE基板。膜是通过商用铜膜上改进的电流置换。与滤纸SERS基板相比，合成后的基板具有相对较快的热传导，这可以在连续激光照射条件下带来更大的时间稳定性。强度变化的相对标准偏差（RSD）值为0.31％。实验结果还表明，这些基材的寿命长，即使经过5个循环仍可重现。计算得出的RSD为12.13％，表明该方法是可回收的。过滤后的信号强度几乎是传统滴滤方法的28倍，证明该膜具有快速的提取能力。基于流通法研究了对甲酸盐的定性和定量检测。良好的线性度（对于磷酸酯，在3.84至288nmol L ^-1的浓度范围内达到R ² = 0.98 。此外，还研究了模拟水在地下水，地表水和饮用水等实际水中的检测。这些结果证明了其在实际环境中快速检测磷酸根的实际应用。