【作者】 马品一； 王迪； 杨青青； 王兴华； 宋大千；

【Author】 Pinyi Ma;Di Wang;Qingqing Yang;Xinghua Wang;Daqian Song;Jilin University, College of Chemistry;

【机构】 吉林大学化学学院；

【摘要】 我们开发出一种基于表面增强拉曼光谱（SERS）法的痕量甲醛检测方法。其检测原理是基于甲醛与4-氨基-5-肼基-3-巯基-1,2,4-三唑（AHMT）发生衍生化反应,利用AgNPs作为增强基底,根据衍生前后SERS光谱中832 cm^-1处峰面积的变化间接实现甲醛含量的测定。实验结果表明:在1-1000μg L-1浓度范围内,SERS峰面积与甲醛的浓度呈线性关系,检出限为0.15μg L^-1。通过测定4种实际样品,得到回收率的范围为91.0-108.7%,该方法的测定结果与国家标准方法（SN/T 1547-2011）比对,无显著性差异。更多还原

【Abstract】 A selective and ultrasensitive surface-enhanced Raman spectroscopy（SERS） method was developed for the determination of trace formaldehyde（HCHO）. It is based on derivative reaction between HCHO and 4-amino-5-hydrazino-3-mercapto-1,2,4-triazole（AHMT）. The peak areas of the SERS at 832 cm^-1using Ag NPs as substrates are linearly related to the concentration of HCHO in the 1-1000 μg L^-1range, the limit of detection is 0.15 μg L^-1. Recoveries obtained by analyzing four real samples were in the range between 91.0 and 108.7%. There is no significant difference between the results obtained by the present method and the Chinese standard method（SN/T1547-2011）.更多还原