Abstract

Analyses for Co, Zn, and Pb on mixed bed and SA-2 cation exchange resin-loaded paper disks in amounts approaching the theoretical limits of detection were attempted. Based on the results, the definition of limit of detection which requires a line intensity above background equal to three times the square root of the background, using a 10-min count, was modified to the line intensity above background equal to three times the standard deviation of the back-ground counted for 10 min on a series of blank disks. Chemical precleaning of the disks and corrections for paper density were shown to be advantageous for work close to the limit of detection by lowering the background count and reducing the weight-corrected standard deviation.

Lithium ion detection in liquid with low detection limit by laser-induced breakdown spectroscopy

Yage He, Xianshuang Wang, Shuai Guo, Angze Li, Xiangjun Xu, Nasrullah Wazir, Chunjie Ding, Tianqi Lu, Lingling Xie, Min Zhang, Yan Hao, Wei Guo, and Ruibin Liu
Appl. Opt. 58(2) 422-427 (2019)

Detection of counterfeit U.S. paper money using intrinsic fluorescence lifetime

Thomas H. Chia and Michael J. Levene
Opt. Express 17(24) 22054-22061 (2009)

Colorimetric and SERS dual-mode detection of lead Ions based on Au-Ag core-shell nanospheres: featuring quick screening with ultra-high sensitivity

Zheng Zhang, Pei Ma, Junying Li, Yu Sun, Hao Shi, Nan Chen, Xuedian Zhang, and Hui Chen
Opt. Express 27(20) 29248-29260 (2019)

Photochromic Glass by Silver Ion Exchange

Harmon M. Garfinkel
Appl. Opt. 7(5) 789-794 (1968)

Colorless glasses containing ion-exchanged silver

Roger Araujo
Appl. Opt. 31(25) 5221-5224 (1992)