%0 Journal Article
%T 纳米金的制备及其检测水中重金属Cr<sup>3+</sup>的应用研究<br>Preparation of Nano Gold and Its Application in Detection of Heavy Metal Cr<sup>3+</sup> in Water
%A 黄嘉婕
%A 苏润
%A 严瑾
%A 周亚红
%J Hans Journal of Chemical Engineering and Technology
%P 178-185
%@ 2161-8852
%D 2019
%I Hans Publishing
%R 10.12677/HJCET.2019.93026
%X 用偏钨酸铵修饰于纳米金颗粒(AuNPs)表面，并用少量的pH = 6.86的混合磷酸盐缓冲溶液调节pH值，使功能化纳米金溶液呈中性。当偏钨酸铵-AuNPs与Cr<sup>3+</sup>水溶液反应时，会产生颜色变化，可以用于比色分析。实验结果得到分光光度法的线性方程为y = 0.8901x ？ 0.2814，线性范围0.3~1 μg？mL<sup>？1</sup>，其检出限达0.14 μg？mL<sup>？1</sup>。因此，研究偏钨酸铵-AuNPs分光光度法可用于水中Cr<sup>3+</sup>的快速检测。<br />
The functionalized nanogold solution was neutralized by modifying the surface of the gold nano-particles (AuNPs) with ammonium metatungstate and adjusting the pH with a small amount of mixed phosphate buffer solution with pH = 6.86. When ammonium metatungstate-AuNPs are re-acted with an aqueous solution of Cr<sup>3+</sup>, a color change is produced which can be used for colorimetric analysis. The experimental results show that the linear equation of spectrophotometry is y = 0.8901x ？ 0.2814, the linear range is 0.3 - 1 μg？mL<sup>？1</sup>, and the detection limit is 0.14 μg？mL<sup>？1</sup>. Therefore, the study of ammonium metatungstate-AuNPs spectrophotometry can be used for the rapid detection of Cr<sup>3+</sup> in water.
%K 金属铬离子，纳米金，功能化，偏钨酸铵，比色分析<br>Metal Chromium Ion
%K Nanogold
%K Functionalization
%K AMT
%K Colorimetric Analysis
%U http://www.hanspub.org/journal/PaperInformation.aspx?PaperID=30128