Optical constants of gasoline and gasoline mixture.

Autor: Qi, Hanbing, Zhu, Hang, Zhang, Xiaoxue, Wang, Qiushi, Shan, Junzhang
Zdroj: Journal of Optics (09728821); Dec2023, Vol. 52 Issue 4, p2342-2355, 14p
Abstrakt: Optical constants play an important role in optical detection of gasoline mixtures. This work investigated the optical constants of 92#, 95#, 98# gasoline and gasoline mixtures. We first obtained the transmittance of gasoline and gasoline mixtures. The optical constants of gasoline samples were calculated through the improved double-thickness transmittance (DTT) method within the wavelength range of 400–600 nm. The accuracy of the method was verified by calculating the refractive index of distilled water. It indicates that the refractive index of distilled water acquired by the improved DTT method is in agreement with the literature data. Within the wavelength range of 400–450 nm, the extinction coefficients of 98#, 92#, and 95# gasoline are diminishing. The refractive index increases compared with 92# gasoline when 92# gasoline is mixed with other gasolines. The refractive index of the 95 and 98 gasoline mixtures cannot be distinguished from those of the two types of pure gasoline. Three fitted formulas between the extinction coefficients and the volume fraction with correlation coefficients higher than 0.99 were proposed to quantitatively predict the volume fraction of pure gasoline in the gasoline mixtures. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
Externí odkaz: