Quantitative Analysis of Trace Metals in Aqueous Solutions by Laser Induced Breakdown Spectroscopy Combined with Filter Paper Assisted Analyte Enrichment

High-sensitivity analysis of trace elements in water using femtosecond LIBS with dry droplet pretreatment on a metallic substrate

“…29 Xiu et al used lter paper as an adsorbent material for Cd, Mn, Cr, and Cu analysis. 30 Liu et al…”

Highly Sensitive Detection of Heavy Metal Elements Using Laser-Induced Breakdown Spectroscopy Coupled with Chelating Resin Enrichment

“…This method can greatly improve the detection sensitivity of liquid samples. Liquid analysis based on LIBS usually uses filter papers [20], graphite [21], wood slices [22], ZnO [23], dehydrated carbon [24], and montmorillonite [25] to convert liquid into solid samples.…”

“…The relative standard deviation (RSD) was less than 6% and the LODs of these six heavy metal cations Cd, Cr, Cu, Ni, Pb, and Zn were 0.029, 0.087, 0.012, 0.083, 0.125, and 0.049 mg/L, respectively. Xiu et al [20] used filter paper as the adsorption material, dropping the sample solution on filter paper placed on the surface of the metal target material, and the filter paper was dried out to isolate the metal target material, after which the pulse laser was focused on the filter paper to generate plasma. The measured LODs for Cd, Mn, Cr, and Cu cations in the liquid were 0.165, 0.035, 0.012, and 0.078 mg/L, respectively.…”

“…However, the introduction of the above materials causes certain defects in the actual experimentation. For example, the manufacturing steps of dehydrated carbon [24] are cumbersome in the actual production, and there are many interfering elements in filter paper [20], wood chips [22], CaO [23], montmorillonite [25] and other matrices, increasing the probability of interference with the spectral intensity of the actual analytes in the solution. Taking into account the summary of the above-mentioned factual problems, this method cannot be adopted on a large scale [31].…”

Determination of scaling ions in oilfield produced water by laser-induced breakdown spectroscopy

“…21 A variety of methods have been developed to improve detection sensitivity in liquid samples, among which phase conversion has been proved to be effective. Several solid substrates have already been used for phase conversion, such as polytetrafluoroethylene (PTFE) filters, 22 matte photographic paper, 23 silicone, 24 wood, 25 metallic substrates such as Al, Cu, Zn, Mg and Si, 14,26–28 cellulosic substrates 13,15,29,30 and polymeric membranes. 31 Among those cited, cellulosic substrates such as filter paper are of low cost and have the potential of being a pre-concentration device.…”