Corrections for matrix effects on fluorescence measurement of a multi-platform optical sensor

2016 ◽  
Vol 11 (3) ◽  
pp. 644-660 ◽  
Author(s):  
Chee-Loon Ng ◽  
Yan-Jie Ng ◽  
Qing-Qing Chen ◽  
Harold F. Hemond
Keyword(s):  
Matrix Effect ◽  
Optical Sensor ◽  
Matrix Effects ◽  
Fluorescence Measurement ◽  
Optical Instrument ◽  
Laboratory Sample ◽  
Physical Conditions ◽  
Fluorescence Measurements ◽  
Improve Accuracy

The LEDIF (LED-induced fluorescence) is an in situ optical instrument that utilizes fluorescence, absorbance, and scattering to identify and quantify substances in water bodies. In this study, matrix effects on fluorescence signals caused by inner filtering, temperature, intramolecular deactivation, turbidity, and pH were investigated, and compensation equations developed to correct measured values and improve accuracy. Multiple simultaneous matrix effect corrections were demonstrated with a laboratory sample subjected to known interferences and physical conditions. In general, compensation was found to be important to improve the accuracy of fluorescence measurements.

scholarly journals Matrix effects and application of matrix effect factor

Bioanalysis ◽  
2017 ◽  
Vol 9 (23) ◽  
pp. 1839-1844 ◽  
Author(s):  
Wanlong Zhou ◽  
Shuang Yang ◽  
Perry G Wang
Keyword(s):  
Matrix Effect ◽  
Matrix Effects ◽  
Effect Factor

A novel optical sensor for Pb2+ detection based on in-situ formation of Ruddlesden-Popper phase (C4H9NH3)2PbBr4 perovskite

2021 ◽  
pp. 131280
Author(s):  
Jingyi Ma ◽  
Lei Zhang ◽  
Jin Wang ◽  
Renji Zheng ◽  
Xuezhen Feng ◽  
...  
Keyword(s):  
Optical Sensor ◽  
In Situ Formation

scholarly journals Towards an Understanding of Crystallization by Attachment

Crystals ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 463
Author(s):  
Haihua Pan ◽  
Ruikang Tang
Keyword(s):  
Capillary Condensation ◽  
Force Measurements ◽  
Force Microscopy ◽  
Physical Conditions ◽  
Driving Mechanisms ◽  
Atomic Force ◽  
Wide Range ◽  
Dynamics Simulations ◽  
Hydration Layers

Crystallization via particle attachment was used in a unified model for both classical and non-classical crystallization pathways, which have been widely observed in biomimetic mineralization and geological fields. However, much remains unknown about the detailed processes and driving mechanisms for the attachment. Here, we take calcite crystal as a model mineral to investigate the detailed attachment process using in situ Atomic Force Microscopy (AFM) force measurements and molecular dynamics simulations. The results show that hydration layers hinder the attachment; however, in supersaturated solutions, ionic bridges are formed between crystal gaps as a result of capillary condensation, which might enhance the aggregation of calcite crystals. These findings provide a more detailed understanding of the crystal attachment, which is of vital importance for a better understanding of mineral formation under biological and geological environments with a wide range of chemical and physical conditions.

Assessment of matrix effects associated with Fe isotope analysis using 266 nm femtosecond and 193 nm nanosecond laser ablation multi-collector inductively coupled plasma mass spectrometry

2018 ◽  
Vol 33 (1) ◽  
pp. 68-83 ◽  
Author(s):  
Xin-Yuan Zheng ◽  
Brian L. Beard ◽  
Clark M. Johnson
Keyword(s):  
Laser Ablation ◽  
Inductively Coupled Plasma ◽  
Matrix Effects ◽  
Isotope Analysis ◽  
Nanosecond Laser ◽  
Inductively Coupled ◽  
Nanosecond Laser Ablation ◽  
Plasma Mass Spectrometry ◽  
193 Nm

The nature of matrix effects during in situ Fe isotope analysis using fs- and ns-laser ablation (LA) was characterized and compared.

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