Determination of cadmium in rice using nanoparticle-enhanced laser-induced breakdown spectroscopy combined with film preparation,Journal of Analytical Atomic Spectrometry

当前位置： X-MOL 学术 › J. Anal. At. Spectrom. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Determination of cadmium in rice using nanoparticle-enhanced laser-induced breakdown spectroscopy combined with film preparation
Journal of Analytical Atomic Spectrometry ( IF 3.1 ) Pub Date : 2020-10-29 , DOI: 10.1039/d0ja00354a
Jinming Niu _{1,

2,

3,

4,

5} , Jingqi Lu _{1,

2,

3,

4,

5} , Feng Xu _{1,

2,

3,

4,

5}

Affiliation

The ability of laser-induced breakdown spectroscopy (LIBS) to detect Cd in rice is limited. A nanoparticle enhancement method combined with film preparation to improve the detection with LIBS is proposed. The film sample was prepared by scraping the mixed rice powder and silver nanoparticle (Ag NP) suspensions onto a glass slide, which was then dried in air. Finally, the glass slide that contained the analytes and Ag NPs was used for LIBS determination. Compared with the traditional tableting method, the spectral intensity of Cd is increased by a factor of 20. Thus, the limit of detection was 0.17 μg g⁻¹, and the limit of quantification was 0.56 μg g⁻¹. The results demonstrate that the method of nanoparticle-enhanced LIBS (NELIBS) combined with film preparation can be used to distinguish rice with excessive Cd content.

中文翻译：

纳米增强激光诱导击穿光谱结合膜制备法测定大米中的镉

激光诱导击穿光谱法（LIBS）检测大米中Cd的能力有限。提出了一种结合膜制备的纳米粒子增强方法，以提高LIBS的检测率。通过将混合的米粉和银纳米颗粒（Ag NP）悬浮液刮擦到载玻片上，然后在空气中干燥来制备薄膜样品。最后，将载有分析物和Ag NP的载玻片用于LIBS测定。与传统压片方法相比，Cd的光谱强度提高了20倍。因此，检测限为0.17μgg ^-1，定量限为0.56μgg ^-1。结果表明，纳米增强LIBS（NELIBS）与薄膜制备相结合的方法可用于区分镉含量过高的大米。

更新日期：2020-11-03

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11