Quantification of Sunscreen Ethylhexyl Triazone in Topical Skin-Care Products by Normal-Phase TLC/Densitometry

Table 1

Calibration plots for ET: Methods A and B, automatic spotting, 300 nm.

	Method A	Method B
Equation	𝑦=−640.2𝑥^2+3656.8𝑥+469.0	𝑦=−474.72𝑥^2+2384.8𝑥+463.0
𝑅	0.9993	0.9983
LOD; [μg spot^−1]	0.03	0.03
LOQ; [μg spot^−1]	0.1	0.1