Simultaneous determination of H2SiF6, HF and total fluoride in fluorosilicic acid recovered from wet phosphoric acid production by potentiometric titration

2022 ◽  
pp. 107152
Author(s):  
Said Kounbach ◽  
Mokhtar Ben Embarek ◽  
Lhassane Mahi ◽  
Rachid Boulif ◽  
Redouane Beniazza ◽  
...  
Keyword(s):  
Phosphoric Acid ◽  
Simultaneous Determination ◽  
Potentiometric Titration ◽  
Acid Production ◽  
Fluorosilicic Acid

Determination of natural radionuclides in phosphogypsum samples from phosphoric acid production industry in Senegal

2021 ◽  
pp. 1-8
Author(s):  
Ousmane Ndour ◽  
Coumba Thiandoume ◽  
Alassane Traore ◽  
Xavier Cagnat ◽  
Papa Mbaye Diouf ◽  
...  
Keyword(s):  
Phosphoric Acid ◽  
Acid Production ◽  
Natural Radionuclides ◽  
Production Industry

Simultaneous Determination of Copper, Lead and Zinc in Alloy by Potentiometric Titration Coupled with Multivariate Calibration Using a Flow Injection Technique

2013 ◽  
Vol 785-786 ◽  
pp. 1353-1358 ◽  
Author(s):  
Chan Gai Deng ◽  
Li Fu Liao ◽  
Wei Long
Keyword(s):  
Simultaneous Determination ◽  
Potentiometric Titration ◽  
Flow Injection ◽  
Multivariate Calibration ◽  
Injection Technique ◽  
Lead And Zinc ◽  
Relative Standard ◽  
Determination Of Copper ◽  
Copper Lead

A new potentiometric titration method coupled with multivariate calibration using a flow injection technique for the simultaneous determination of multi-components in alloy has been developed. the titrant is a mixture of EDTA and sodium fluoride, both mercury film electrode and fluorinion selective electrode are inserted in the flow cell. In a process of titration, both the potentiometric of mercury ion and the mixed proportion of reactants at each titration point can be obtained simultaneously from the two electrodes, and then the concentration of each component in the mixture can be obtained from the titration curves by multivariate calibration method. The method is free of volumetric and time measurements, and reduces the consumption of reagents and samples. The method is also very quick in analysis rapidity. The method has been applied for the simultaneous determination of copper, lead and zinc in alloy samples with the relative standard deviation of 0.18%~0.45% and the recovery of 99.5%~101.6%.

Simultaneous Determination of Aluminum, Iron, Calcium, and Magnesium in Wet-Process Phosphoric Acid by DC Argon Plasma Emission Spectrometry

1981 ◽  
Vol 64 (1) ◽  
pp. 25-27 ◽  
Author(s):  
G Bradley Hunter ◽  
Terry C Woodis ◽  
Frank J Johnson
Keyword(s):  
Phosphoric Acid ◽  
Simultaneous Determination ◽  
Argon Plasma ◽  
Absorption Spectrometry ◽  
Emission Spectrometry ◽  
Plasma Emission ◽  
Wet Process ◽  
Plasma Emission Spectrometry ◽  
Significant Difference

Abstract A method has been developed for the simultaneous determination of Al, Fe, Ca, and Mg in wet-process phosphoric acid by dc argon plasma emission spectrometry. The suppression of Ca and Mg emission by phosphate encountered in flame analyses was nonexistent, and other interferences were minimal. Results obtained by the procedure were compared with those obtained by atomic absorption spectrometry. The paired t-test showed no significant difference between the 2 methods at the 95% confidence level.

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