Related Experiment Video
Updated: Dec 18, 2025
08:53
Automated 90Sr Separation and Preconcentration in a Lab-on-Valve System at Ppq Level
Published on: June 6, 2018
8.3K
Development and validation of a sodium AnaLysis tool (SALT).
Marcia Cooper1, Janis Randall Simpson2, Rita Klutka3
1Bureau of Nutritional Sciences, HPFB, Health Canada, Sir Frederick G. Banting Research Centre, 251 Sir Frederick Banting Driveway, Ottawa, Ontario, K1A 0K9, Canada. marcia.cooper@canada.ca.
Nutrition Journal
|June 17, 2020
Summary
The Sodium AnaLysis Tool (SALT) shows potential for assessing Canadian adult sodium intake, though further refinement is needed for accurate classification. This tool helps evaluate population-level dietary sodium consumption.
Area of Science:
- Nutrition Science
- Public Health
- Dietary Assessment
Background:
- Excess dietary sodium is linked to elevated blood pressure.
- Most Canadians exceed the Tolerable Upper Intake Level (UL) of 2300 mg/day.
- Previous surveys show persistent high sodium consumption in Canada.
Purpose of the Study:
- To develop and assess the validity and reliability of the Sodium AnaLysis Tool (SALT).
- To evaluate SALT's effectiveness in measuring population sodium intake in Canadian adults.
Main Methods:
- Utilized Canadian Community Health Survey (CCHS) data to create SALT questions.
- Collected data from 100 participants using 24-hour recalls and SALT assessments over one month.
- Employed statistical tests (Bland-Altman plots, t-tests, correlations) for validity and reliability analysis.
Main Results:
- Validity testing showed a small bias (7 mg/day) and poor correlation (r=0.202) between SALT and 24-hour recalls.
- Fair agreement (κ=0.236) was found for classifying sodium intake above or below the UL.
- Test-retest reliability showed moderate agreement (κ=0.488) for classification, but significant differences in absolute intake values between SALT administrations.
Conclusions:
- The SALT demonstrates potential as a valid and reliable tool for assessing Canadian adult dietary sodium intake.
- While classification accuracy requires improvement, SALT may be useful for categorizing sodium intake levels.
- Further modifications to the SALT tool are recommended to enhance its precision.
Related Concept Videos
01:21Development of Analytical Methods
1.5K
An analytical methodology can be divided into four sequential steps: technique, method, procedure, and protocol. A technique is a scientific principle that rationalizes a specific phenomenon through chemical measurements. Adapting a technique for analyzing a sample of interest is termed a method. The procedure outlines the directions for performing the analysis via an analytical method. The protocol is the detailed guidelines on the procedure, which should be strictly followed to obtain the...
1.5K
01:15Data Validation
480
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:
Key parameters for method validation include:
480
03:46Qualitative Analysis
23.5K
For solutions containing mixtures of different cations, the identity of each cation can be determined by qualitative analysis. This technique involves a series of selective precipitations with different chemical reagents, each reaction producing a characteristic precipitate for a specific group of cations. Metal ions within a group are further separated by varying the pH, heating the mixture to redissolve a precipitate, or adding other reagents to form complex ions.
For instance, group IV...
For instance, group IV...
23.5K
04:08Determining the pH of Salt Solutions
46.2K
The pH of a salt solution is determined by its component anions and cations. Salts that contain pH-neutral anions and the hydronium ion-producing cations form a solution with a pH less than 7. For example, in ammonium nitrate (NH4NO3) solution, NO3− ions do not react with water whereas NH4+ ions produce the hydronium ions resulting in the acidic solution. In contrast, salts that contain pH-neutral cations and the hydroxide ion-producing anions form a solution with a pH greater than 7. For...
46.2K
01:21Atomic Absorption Spectroscopy: Lab
912
For AAS measurements, samples must be introduced as clear solutions, often requiring extensive preliminary treatment to dissolve materials like soils, animal tissues, and minerals. Common methods for sample preparation include treatment with hot mineral acids, wet ashing, combustion in closed containers, high-temperature ashing, or fusion with reagents.
Solutions containing organic solvents, such as low-molecular-mass alcohols, esters, or ketones, enhance absorbances by increasing...
Solutions containing organic solvents, such as low-molecular-mass alcohols, esters, or ketones, enhance absorbances by increasing...
912