Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Uncertainty in Measurement: Accuracy and Precision03:37

Uncertainty in Measurement: Accuracy and Precision

112.7K
Scientists typically make repeated measurements of a quantity to ensure the quality of their findings and to evaluate both the precision and the accuracy of their results. Measurements are said to be precise if they yield very similar results when repeated in the same manner. A measurement is considered accurate if it yields a result that is very close to the true or the accepted value. Precise values agree with each other; accurate values agree with a true value. 
112.7K
Accuracy and Precision01:52

Accuracy and Precision

16.6K
Scientists typically make repeated measurements of a quantity to ensure the quality of their findings and to evaluate both the precision and the accuracy of their results. Measurements are said to be precise if they yield very similar results when repeated in the same manner. A measurement is considered accurate if it yields a result that is very close to the true or the accepted value. Precise values agree with each other; accurate values agree with a true value.  Highly accurate...
16.6K
Testing a Claim about Standard Deviation01:19

Testing a Claim about Standard Deviation

3.0K
A complete procedure to test a claim about population standard deviation or population variance is explained here.
The hypothesis testing for the claim of population standard deviation (or variance) requires the data and samples to be random and unbiased. The population distribution also must be normal. There is no specific requirement on the sample size as the estimation is based on the chi-square distribution.
As a first step, the hypothesis (null and alternative) concerning the claim about...
3.0K
Contaminants and Errors01:16

Contaminants and Errors

443
Effective sample preparation is crucial for accurate and reliable laboratory analysis. During this process, two significant sources of error can arise: concentration bias from improper sample splitting and contamination caused by methods used to reduce particle size, such as grinding or homogenization. Identifying and minimizing these potential errors is crucial to ensuring the validity of the analysis.
Another key consideration is determining the appropriate number of samples required to...
443
Data Validation01:15

Data Validation

3.3K
Method validation is a crucial process in analytical chemistry designed to confirm that a given method consistently produces reliable and high-quality results. This process is essential when a method is applied to different sample matrices or when procedural modifications are made, ensuring that the results meet acceptable standards across various applications.
Key parameters for method validation include:
3.3K
Quality Assurance01:19

Quality Assurance

3.7K
Quality assurance is the overarching term used to describe the activities employed to ensure the proper performance of a system. These activities can be classified into three categories: quality control, quality assessment, and internal corrective measures. Typically, these activities work cyclically: quality control is performed before and during the analysis, while quality assessment occurs during and after the investigation. Internal corrective measures are implemented based on the findings...
3.7K

You might also read

Related Articles

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

Sort by
Same author

Panel Discussion: Session II.

Bulletin of the New York Academy of Medicine·2009
Same author

Symposium on the health aspects of nuclear power plant incidents. Planning for protection and treatment: the State role.

Bulletin of the New York Academy of Medicine·1983
Same author

Guidelines to radiation doses.

Nature·1983
Same author

Radioactive plume from the Three Mile Island accident: xenon-133 in air at a distance of 375 kilometers.

Science (New York, N.Y.)·1980
Same author

The determination of 125I and 129I using an intrinsic-germanium detector for x-ray spectroscopy.

Health physics·1975
Same author

Iodine-129 levels in milk and water near a nuclear fuel reprocessing plant.

Health physics·1974
Same journal

Precise Numerical Differentiation of Thermodynamic Functions with Multicomplex Variables.

Journal of research of the National Institute of Standards and Technology·2024
Same journal

Characterization of 3-Dimensional Printing and Casting Materials for use in Computed Tomography and X-ray Imaging Phantoms.

Journal of research of the National Institute of Standards and Technology·2024
Same journal

On The Quotient of a Centralized and a Non-centralized Complex Gaussian Random Variable.

Journal of research of the National Institute of Standards and Technology·2024
Same journal

Fast Methods for Finding Multiple Effective Influencers in Real Networks.

Journal of research of the National Institute of Standards and Technology·2024
Same journal

Disinfection of Respirators with Ultraviolet Radiation.

Journal of research of the National Institute of Standards and Technology·2024
Same journal

DNA Origami Design: A How-To Tutorial.

Journal of research of the National Institute of Standards and Technology·2024
See all related articles

Related Experiment Video

Updated: Mar 7, 2026

Automated 90Sr Separation and Preconcentration in a Lab-on-Valve System at Ppq Level
08:53

Automated 90Sr Separation and Preconcentration in a Lab-on-Valve System at Ppq Level

Published on: June 6, 2018

8.5K

Standardization of Radon Measurements: II. Accuracy and Proficiency Testing.

J M Matuszek1

  • 1Wadsworth Center for Laboratories and Research, New York State Department of Health, Albany, NY 12201.

Journal of Research of the National Institute of Standards and Technology
|February 10, 2017
PubMed
Summary
This summary is machine-generated.

New data confirm deficiencies in charcoal detectors for environmental radon measurement. Electret detectors offer a convenient, accurate, and precise system for measuring radon concentration.

Keywords:
alpha-track detectorcalibrationcharcoal detectorelectret detectorproficiency testquality assuranceradon measurementtrack-etch detectoruncertainty

More Related Videos

Irradiator Commissioning and Dosimetry for Assessment of LQ α and β Parameters, Radiation Dosing Schema, and in vivo Dose Deposition
06:20

Irradiator Commissioning and Dosimetry for Assessment of LQ α and β Parameters, Radiation Dosing Schema, and in vivo Dose Deposition

Published on: March 11, 2021

7.8K
Quantitative Detection of Trace Explosive Vapors by Programmed Temperature Desorption Gas Chromatography-Electron Capture Detector
07:57

Quantitative Detection of Trace Explosive Vapors by Programmed Temperature Desorption Gas Chromatography-Electron Capture Detector

Published on: July 25, 2014

20.5K

Related Experiment Videos

Last Updated: Mar 7, 2026

Automated 90Sr Separation and Preconcentration in a Lab-on-Valve System at Ppq Level
08:53

Automated 90Sr Separation and Preconcentration in a Lab-on-Valve System at Ppq Level

Published on: June 6, 2018

8.5K
Irradiator Commissioning and Dosimetry for Assessment of LQ α and β Parameters, Radiation Dosing Schema, and in vivo Dose Deposition
06:20

Irradiator Commissioning and Dosimetry for Assessment of LQ α and β Parameters, Radiation Dosing Schema, and in vivo Dose Deposition

Published on: March 11, 2021

7.8K
Quantitative Detection of Trace Explosive Vapors by Programmed Temperature Desorption Gas Chromatography-Electron Capture Detector
07:57

Quantitative Detection of Trace Explosive Vapors by Programmed Temperature Desorption Gas Chromatography-Electron Capture Detector

Published on: July 25, 2014

20.5K

Area of Science:

  • Environmental Science
  • Radiological Health
  • Measurement Science

Background:

  • Accurate environmental radon measurement is crucial for public health.
  • Previous studies, including a 1987 meeting, identified issues with certain radon detection methods.
  • Ongoing evaluation of radon measurement techniques is necessary.

Purpose of the Study:

  • To review the accuracy of in situ environmental radon measurement techniques.
  • To present new data on charcoal canister, alpha-track, and electret detectors.
  • To assess the performance of these detectors compared to previous findings.

Main Methods:

  • Review of existing literature and data on radon measurement techniques.
  • Presentation of new experimental data for charcoal canister detectors.
  • Presentation of new experimental data for alpha-track (track-etch) detectors.
  • Presentation of new experimental data for electret detectors.

Main Results:

  • New results confirm previously reported deficiencies in charcoal detectors.
  • The accuracy and precision of alpha-track measurements have improved since 1987.
  • Electret detectors demonstrate convenience, accuracy, and precision in radon concentration measurement.

Conclusions:

  • Charcoal detectors continue to show deficiencies for environmental radon measurement.
  • Alpha-track detectors show improved performance.
  • Electret detectors present a promising, accurate, and precise method for radon monitoring.
  • Comprehensive, blind proficiency-testing programs are essential for validating radon measurement techniques.