Supercharge Your Innovation With Domain-Expert AI Agents!

Method for ICP analysis of sodium and potassium in low sodium salt

An analytical method and low-sodium salt technology, applied in the field of analytical chemistry, can solve the problem of ICP-OES being susceptible to interference, and achieve the effects of simple operation and high analytical precision

Inactive Publication Date: 2015-09-16
CHINASALT JINTAN
View PDF2 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is that ICP-OES is susceptible to interference when performing sodium and potassium tests, and provides an ICP analysis method for sodium and potassium in low-sodium salts

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for ICP analysis of sodium and potassium in low sodium salt
  • Method for ICP analysis of sodium and potassium in low sodium salt
  • Method for ICP analysis of sodium and potassium in low sodium salt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Five self-made low-sodium salts 1#, 2#, 3#, 4#, and 5# were used, and 2.5g of each was added to 5ml of 10% dilute nitric acid to dissolve and settle in a 250ml plastic volumetric flask. Then accurately pipette 1.0ml from the volumetric flask, dilute and dissolve it in a 50ml plastic volumetric flask, and use it as the solution to be tested. Insert the sampling tube into the solution to be tested, the peristaltic pump will bring the sample solution into the sampling system, automatic atomization, ionization of the sample solution, the detector measures them at the characteristic wavelengths of 589.592nm (sodium) and 769.896nm (potassium) Strength of. And correspondingly, test and compare according to the volumetric method in the QB2019-2005 "Low Sodium Salt" standard. The measured KCl content in the low sodium salt was compared with known formulation values.

[0020] ICP working conditions: RF power 950W, atomizer air flow 1.25L / min -1 , auxiliary gas flow 0.5L / min -...

Embodiment 2

[0023] Take two kinds of commercial low-sodium salts on sale, which are non-iodine low-sodium salt and iodine-added low-sodium salt. 2.5g of the sample is dissolved in 5ml of 10% dilute nitric acid and fixed in a 250ml plastic volumetric flask. Then accurately pipette 2.0ml from the volumetric flask, dilute and dissolve it in a 50ml plastic volumetric flask, and use it as the solution to be tested. And add the corresponding sodium potassium standard solution to the solution to be tested, and carry out standard addition recovery and precision test.

[0024] ICP working conditions: RF power 750W, atomizer air flow 1.00L / min -1 , auxiliary gas flow 1.00L / min -1 , Vertical observation height: 15mm, pump tube stabilization time 5s, long-wave integration time 5s, short-wave integration time 15s, integration times 3 times.

[0025] Table 1 Standard recovery and precision test

[0026]

[0027] The detection results are shown in Table 1: the recovery rate of sodium and potassium...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention belongs to the field of analytical chemistry and relates to a method for detection analysis of sodium and potassium in low sodium salt. The method comprises dissolving low sodium salt in a proper amount of dilute HNO3, adding water into the solution for volume metering, detecting sodium and potassium content at specific wavelength by ICP subjected to specific parameter adjustment and carrying out conversion from the sodium and potassium content into NaCl and KCl content. The method can realize direct detection of sodium and potassium in low sodium salt, is free of drugs such as acetic acid and turpentine with excitant smells used in the QB2019-2005 standard and other reagents and prevents subtraction method-based Na measurement error caused by impurities. Through reasonable optimization of parameters such as a sodium-potassium analysis spectral line in an ICP emission spectrum, RF power and atomizer flow, and an observation mode and observation height, analysis steps are greatly simplified and analysis precision and accuracy are improved.

Description

technical field [0001] The invention belongs to the field of analytical chemistry, in particular to the detection of main components of low-sodium salts, and is suitable for the ICP analysis method of sodium and potassium elements. Background technique [0002] Low-sodium salt is to replace part of sodium chloride with potassium chloride (about 30%), thereby reducing sodium intake. Sodium and potassium are the main components of low-sodium salt, and its content directly reflects the quality of the product. In the QB2019-2005 "Low-sodium Salt" standard, the determination of sodium is based on the difference after the determination of total chloride ions. Indirect method, other impurity components will lead to certain errors in the calculation results. At the same time, the standard specifies two methods for the determination of potassium: sodium tetraphenylborate gravimetric method and quaternary ammonium salt volumetric method. The gravimetric method is cumbersome and time...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G01N21/73
Inventor 刘会祥王佩琪陈虎孙桀
Owner CHINASALT JINTAN
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com