A novel strategy for preparing calibration standards for laser-induced breakdown spectroscopy using beeswax as a substrate: A case study with cosmetic and lubricant oil samples

Atomic spectrometry update: review of advances in the analysis of metals, chemicals and materials

“…An alternative has been proposed by Joca et al who have developed a novel strategy for preparing calibration standards and samples using beeswax as a substrate . 78 The method was tested by analysing lubricating oils and cosmetic samples (two red lipsticks, liquid lipstick and face foundation). Beeswax (15.0 g) was placed into a 50 mL polypropylene tube, and then lipstick or face foundation was added into the tubes to reach a concentration of 1.0 mg g −1 and 10 mg g −1 , respectively.…”

“…The first, by Joca et al , looked at the use of beeswax as a substrate for the preparation of standards for LIBS analysis of cosmetic and lubricant samples . 78 For the lubricant oil samples, the best results were obtained by using the C 2 emission band at 516.4 nm as an internal standard for determining Si and Zn while the C atomic emission line at 505.50 nm was best for Mg quantification. For Fe quantification the C 2 emission bands at 516.4 and 545.7 nm both yielded similar results.…”