Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Flame Photometry: Lab

Flame Photometry: Lab

In a flame photometer, when a solution like potassium chloride is aspirated into the flame, the solvent evaporates, leaving behind dehydrated salt. This salt dissociates into free gaseous atoms in their ground state. Some of these atoms absorb energy from the flame, leading to their excitation. The excited atoms return to the ground state, emitting photons at characteristic wavelengths. Because only electronic transitions are involved, the resulting emission lines are very narrow. The intensity...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

The effects of genetic polymorphisms of APOE on circulating lipid levels in middle-aged and elderly chinese Fujian Han population: toward age- and sex-personalized management.

Lipids in health and disease·2021

Same author

Adapting Off-the-Shelf Source Segmenter for Target Medical Image Segmentation.

Medical image computing and computer-assisted intervention : MICCAI ... International Conference on Medical Image Computing and Computer-Assisted Intervention·2021

Same author

Generative Self-training for Cross-domain Unsupervised Tagged-to-Cine MRI Synthesis.

Medical image computing and computer-assisted intervention : MICCAI ... International Conference on Medical Image Computing and Computer-Assisted Intervention·2021

Same author

DUAL-CYCLE CONSTRAINED BIJECTIVE VAE-GAN FOR TAGGED-TO-CINE MAGNETIC RESONANCE IMAGE SYNTHESIS.

Proceedings. IEEE International Symposium on Biomedical Imaging·2021

Same author

The prevalence of frailty among breast cancer patients: a systematic review and meta-analysis.

Supportive care in cancer : official journal of the Multinational Association of Supportive Care in Cancer·2021

Same author

Multiphoton upconversion and non-resonant optical nonlinearity in perovskite quantum dot doped glasses.

Optics letters·2021

Search research articles

Related Experiment Video

Updated: Oct 19, 2025

A Low-Cost Method of Measuring the In Situ Primary Productivity of Periphyton Communities of Lentic Waters

A Low-Cost Method of Measuring the In Situ Primary Productivity of Periphyton Communities of Lentic Waters

Published on: December 16, 2022

Chlorophyll a estimation in lakes using multi-parameter sonde data.

Xiaofeng Liu¹, Aris P Georgakakos¹

¹Georgia Water Resources Institute, School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, GA, USA.

|September 24, 2021

Summary

This summary is machine-generated.

Accurate algae biomass monitoring in lakes is improved by a new method correcting Chlorophyll a (Chl-a) fluorescence data. This approach addresses natural variations and daytime nonphotochemical quenching (NPQ) for reliable water quality assessments.

Keywords:

Chlorophyll a fluorescence Lakes Multi-parameter sonde Nonphotochemical quenching

More Related Videos

Early Detection of Cyanobacterial Blooms and Associated Cyanotoxins using Fast Detection Strategy

Early Detection of Cyanobacterial Blooms and Associated Cyanotoxins using Fast Detection Strategy

Published on: February 25, 2021

Investigating the Relationship between Sea Surface Chlorophyll and Major Features of the South China Sea with Satellite Information

Investigating the Relationship between Sea Surface Chlorophyll and Major Features of the South China Sea with Satellite Information

Published on: June 13, 2020

Related Experiment Videos

Last Updated: Oct 19, 2025

A Low-Cost Method of Measuring the In Situ Primary Productivity of Periphyton Communities of Lentic Waters

A Low-Cost Method of Measuring the In Situ Primary Productivity of Periphyton Communities of Lentic Waters

Published on: December 16, 2022

Early Detection of Cyanobacterial Blooms and Associated Cyanotoxins using Fast Detection Strategy

Early Detection of Cyanobacterial Blooms and Associated Cyanotoxins using Fast Detection Strategy

Published on: February 25, 2021

Investigating the Relationship between Sea Surface Chlorophyll and Major Features of the South China Sea with Satellite Information

Investigating the Relationship between Sea Surface Chlorophyll and Major Features of the South China Sea with Satellite Information

Published on: June 13, 2020

Area of Science:

Environmental Science
Limnology
Water Quality Monitoring

Background:

Algae blooms pose significant global threats to freshwater ecosystems.
In-situ Chlorophyll a (Chl-a) fluorometers are crucial for rapid algae biomass assessment.
Existing Chl-a fluorescence measurements face challenges due to natural variability and nonphotochemical quenching (NPQ).

Purpose of the Study:

To develop an accurate method for converting in-situ Chl-a fluorescence to Chl-a concentration.
To address the nonlinear relationship and errors between sonde fluorescence and laboratory measurements.
To correct for nonphotochemical quenching (NPQ) effects in surface waters.

Main Methods:

Utilized water quality data from a freshwater lake (October 2018 - December 2020).
Developed a bias correction model incorporating concurrent sonde measurements of other water quality parameters.
Integrated a bias correction approach for nonphotochemical quenching (NPQ).

Main Results:

Initial analysis revealed a nonlinear, correlated, yet error-prone relationship between sonde Chl-a fluorescence and extracted Chl-a.
The new Chl-a model significantly improved accuracy.
Achieved a root mean square error (RMSE) below 0.95 µg/L.

Conclusions:

The developed method enhances the accuracy of Chl-a characterization in freshwater lakes and reservoirs.
This approach leverages readily available in-situ fluorescence sonde measurements.
Facilitates more reliable monitoring and management of algae blooms.