Features of High-Precision Photothermal Analysis of Liquid Systems by Dual-Beam Thermal Lens Spectrometry

被引：0

作者：

Khabibullin, Vladislav R. ^{[1
,2
]}

Mikheev, Ivan V. ^{[1
]}

Proskurnin, Mikhail A. ^{[1
]}

机构：

[1] Moscow MV Lomonosov State Univ, Chem Dept, Analyt Chem Div, D 1,Str 3,Lenin Hills,GSP-1 V-234, Moscow 119991, Russia

[2] Russian Acad Sci, Fed State Budgetary Inst Sci Inst African Studies, St Spiridonovka 30-1, Moscow 123001, Russia

来源：

NANOMATERIALS | 2024年 / 14卷 / 19期

关键词：

thermal lens spectrometry; accuracy; precision; trueness; thermal diffusivity; absorbance-based photothermal signal; finely dispersed systems; FLUORESCENCE QUANTUM YIELD; SOLID-PHASE EXTRACTION; RHODAMINE; 6G; STEADY-STATE; THERMOPHYSICAL PROPERTIES; ABSORPTION-MEASUREMENTS; PHOTOCHEMICAL-REACTION; COMPOSITION DEPENDENCE; WAVE INTERFEROMETRY; AQUEOUS-SOLUTIONS;

D O I：

10.3390/nano14191586

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Thermal lens spectrometry is a high-sensitivity method for measuring the optical and thermal parameters of samples of different nature. To obtain both thermal diffusivity and absorbance-based signal measurements with high accuracy and precision, it is necessary to pay attention to the factors that influence the trueness of photothermal measurements. In this study, the features of liquid objects are studied, and the influence of optical and thermal effects accompanying photothermal phenomena are investigated. Thermal lens analysis of dispersed solutions and systems with photoinduced activity is associated with a large number of side effects, the impact of which on trueness is not always possible to determine. It is necessary to take into account the physicochemical properties and optical and morphological features of the nanophase and components exhibiting photoinduced activity. The results obtained make it possible to reduce systematic and random errors in determining the thermal-diffusivity-based and absorbance-based photothermal signals for liquid objects, and also contribute to a deeper understanding of the physicochemical processes in the sample.

引用

页数：27

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