Titration of long-chain quaternary ammonium compounds using tetraphenylboron

1966 ◽  
Vol 43 (6) ◽  
pp. 355-357 ◽  
Author(s):  
L. D. Metcalfe ◽  
R. J. Martin ◽  
A. A. Schmitz
Keyword(s):  
Quaternary Ammonium ◽  
Quaternary Ammonium Compounds ◽  
Ammonium Compounds ◽  
Long Chain

scholarly journals Soft Antimicrobial Agents:  Synthesis and Activity of Labile Environmentally Friendly Long Chain Quaternary Ammonium Compounds

2003 ◽  
Vol 46 (19) ◽  
pp. 4173-4181 ◽  
Author(s):  
Thorsteinn Thorsteinsson ◽  
Már Másson ◽  
Karl G. Kristinsson ◽  
Martha A. Hjálmarsdóttir ◽  
Hilmar Hilmarsson ◽  
...  
Keyword(s):  
Quaternary Ammonium ◽  
Antimicrobial Agents ◽  
Environmentally Friendly ◽  
Quaternary Ammonium Compounds ◽  
Ammonium Compounds ◽  
Long Chain

Loss of bactericidal capacity of long-chain quaternary ammonium compounds with protein at lowered temperature

Apmis ◽  
1999 ◽  
Vol 107 (1-6) ◽  
pp. 606-612 ◽  
Author(s):  
B. AHLSTRÖM ◽  
R. A. THOMPSON ◽  
L. EDEBO
Keyword(s):  
Quaternary Ammonium ◽  
Quaternary Ammonium Compounds ◽  
Bactericidal Capacity ◽  
Ammonium Compounds ◽  
Long Chain

Potentiometric titration of long chain quaternary ammonium compounds using sodium tetraphenyl borate

1989 ◽  
Vol 66 (12) ◽  
pp. 1831-1833 ◽  
Author(s):  
C. N. Wang ◽  
L. D. Metcalfe ◽  
J. J. Donkerbroek ◽  
A. H. M. Cosijn
Keyword(s):  
Potentiometric Titration ◽  
Quaternary Ammonium ◽  
Quaternary Ammonium Compounds ◽  
Sodium Tetraphenyl Borate ◽  
Tetraphenyl Borate ◽  
Ammonium Compounds ◽  
Long Chain

scholarly journals Mixtures of Quaternary Ammonium Compounds and Long-chain Fatty Acids as Antifungal Agents

1961 ◽  
Vol 9 (6) ◽  
pp. 538-541
Author(s):  
F. C. Kull ◽  
P. C. Eisman ◽  
H. D. Sylwestrowicz ◽  
R. L. Mayer
Keyword(s):  
Fatty Acids ◽  
Quaternary Ammonium ◽  
Antifungal Agents ◽  
Quaternary Ammonium Compounds ◽  
Long Chain Fatty Acids ◽  
Ammonium Compounds ◽  
Long Chain ◽  
Chain Fatty Acids

scholarly journals Mixtures of Quaternary Ammonium Compounds and Long-chain Fatty Acids as Antifungal Agents

1961 ◽  
Vol 9 (6) ◽  
pp. 538-541 ◽  
Author(s):  
F. C. Kull ◽  
P. C. Eisman ◽  
H. D. Sylwestrowicz ◽  
R. L. Mayer
Keyword(s):  
Fatty Acids ◽  
Quaternary Ammonium ◽  
Antifungal Agents ◽  
Quaternary Ammonium Compounds ◽  
Long Chain Fatty Acids ◽  
Ammonium Compounds ◽  
Long Chain ◽  
Chain Fatty Acids

Determination of quaternary ammonium compounds in food products by the method of ultra-performance liquid chromatography/high resolution mass-spectrometry

2020 ◽  
Vol 86 (8) ◽  
pp. 23-31
Author(s):  
V. G. Amelin ◽  
D. S. Bolshakov
Keyword(s):  
Mass Spectrometry ◽  
High Resolution ◽  
Quaternary Ammonium ◽  
High Resolution Mass Spectrometry ◽  
Food Products ◽  
Quaternary Ammonium Compounds ◽  
High Resolution Mass ◽  
Ammonium Compounds ◽  
Resolution Mass

The goal of the study is developing a methodology for determination of the residual amounts of quaternary ammonium compounds (QAC) in food products by UHPLC/high-resolution mass spectrometry after water-acetonitrile extraction of the determined components from the analyzed samples. The identification and determination of QAC was carried out on an «UltiMate 3000» ultra-high-performance liquid chromatograph (Thermo Scientific, USA) equipped with a «maXis 4G» high-resolution quadrupole-time-of-flight mass spectrometric detector and an ion spray «ionBooster» source (Bruker Daltonics, Germany). Samples of milk, cheese (upper cortical layer), dumplings, pork, chicken skin and ground beef were used as working samples. Optimal conditions are specified for chromatographic separation of the mixture of five QAC, two of them being a mixture of homologues with a linear structure (including isomeric forms). The identification of QAC is carried out by the retention time, exact mass of the ions, and coincidence of the mSigma isotopic distribution. The limits for QAC detection are 0.1 – 0.5 ng/ml, the determination limits are 1 ng/ml for aqueous standard solutions. The determinable content of QAC in food products ranges within 1 – 100 ng/g. The results of analysis revealed the residual amount of QAC present in all samples, which confirms data of numerous sources of information about active use of QAC-based disinfectants in the meat and dairy industry. The correctness of the obtained results is verified by introduction of the additives in food products at a level of 10 ng/g for each QAC. The relative standard deviation of the analysis results does not exceed 0.18. The duration of the analysis is 30 – 40 min.

Sign in / Sign up

Export Citation Format

Share Document