Comparison study of two commercial spectrometers for heavy metal analysis of laser induced breakdown spectroscopy (LIBS)

Abstract

Abstract:The purpose of this paper is to compare the performance of two spectrometers that are manufactured from the same company. In this work, heavy metals like lead Pb and copper Cu in the KBr matrix were analyzed using the laser induced breakdown spectroscopic technique. A Q-switched Nd:YAG laser with 90 mJ per pulse operating at the fundamental wavelength of 1064 nm and pulse duration of 10 ns was used to generate plasma at the focal region. The important experimental parameters such as the laser energy, integration time, distance between the lens and sample, distance and angle of the optical fiber from the target were optimized. Two spectrometers manufactured by Ocean Optics namely as Maya2000Pro and USB 4000 were employed for anlyzing the spectral lines. The experimental setup and conditions were remained the same for both experiments. The production of spectral lines from each of the interested elements was analyzed and compared with the NIST (National Institute of Standards and Technology) database. The sensitivity, repeatability and limit of detection for each of the systems are discussed in detail.

Detection of laser-produced tin plasma emission lines in atmospheric environment by optical emission spectroscopy technique

“…Pulsed-laser induced plasma of solids is the subject of investigation in many fields of applied research such as laser plasma sources to x-ray lasers, inertial confinement fusion, and laboratory astrophysics [1][2][3]. A pulsed laser source is employed to vaporize and excite the analyte forming plasma [4].…”

Nondestructive Determination of Cu Residue in Orange Peel by Laser Induced Breakdown Spectroscopy

“…The virtues of LIBS, for example, usually none or very simple sample preparation for in situ measurements, standoff operation capacity for remote sensing, multi-elemental detection, rapid measuring speed, together with the capability of analysis with high spatial resolution, make it possible to be utilized in a wide-range of fields, the targets have extended to coal and fly ash [6−8] , drinking water and ocean [9] , soil [10,11] , biological contaminants [12] , ceramic and polymers [13] , explosives [14] , improvement of experimental setup and algorithm [15−17] etc. Heavy metal analyses of LIBS have been used in commercial spectrometers [18] and have huge prospects.…”

Recent development and application of laser induced breakdown spectroscopy

“…利用LIBS对常见食用油和地沟油进 行鉴别比较, 检验结果良好, 测试数据识别率高达 98.1%. 数据结果为进一步推广LIBS在农副产品、药 品、食物等检测领域的应用提供了依据.为了比较光谱仪器的分析性能, Arab等人[90] 采 用由Nd:YAG激光器(1064 nm, 10 ns, 90 mJ)组成的…”