Flow Injection Sensing Strategy for Determining Cationic Surfactants in Commodity and Water Samples

Flow Injection Sensing Strategy for Determining Cationic Surfactants in Commodity and Water Samples

The formation of stable binary water-soluble sub-micellar aggregates of cetyltrimethylammonium bromide-copper-pyrocatechol violet complex (CTAB-Cu-PCV) diminishes the stability and absorbance of the Cu-PCV complex. A new flow injection spectrophotometric sensing strategy used for the determination o...

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Bibliographic Details
Published in:Chemosensors Vol. 10; no. 10; p. 434
Main Authors: El Hamd, Mohamed A, El-Maghrabey, Mahmoud, Abdel-Lateef, Mohamed A, Ali, Samah M, Ibrahim, Munjed M, El-Shahat, Mohamed F, Azeem, Sami M. Abdel
Format: Journal Article
Language:English
Published: Basel MDPI AG 01-10-2022
Subjects:
Absorbance
Antiseptics
Automation
Catechol
Cetyltrimethylammonium bromide
cetyltrimethylammonium bromide (CTAB)
Chemical properties
Commodities
Copper
copper-pyrocatechol violet complex (Cu-PCV)
Detectors
Flow stability
flow-injection spectrophotometry
Identification and classification
Injection
Methods
personal care antiseptic products
Personal care industry
Sanitizers
Sensors
Skin care products
Software
Spectrophotometry
Surface active agents
Surfactants
Technology application
Toiletries
water sample
Water sampling
Egypt
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Summary:The formation of stable binary water-soluble sub-micellar aggregates of cetyltrimethylammonium bromide-copper-pyrocatechol violet complex (CTAB-Cu-PCV) diminishes the stability and absorbance of the Cu-PCV complex. A new flow injection spectrophotometric sensing strategy used for the determination of CTAB in commodity personal care antiseptics and water samples has been established relying on the above-mentioned concept. Based on the reduction of the absorption of the Cu-PCV solution by the injection of CTAB solution at pH 6.0 and 430 nm, a linear absorbance decrease was observed over the CTAB concentration range of 2.0 to 100.0 µg mL−1 (r = 0.987). The analysis method showed limits of detection (3.3 ơ) and quantification (10 ơ) of 0.08 and 0.27 µg mL−1, respectively. The precision (RSD) for five replicate determinations was 7.9 and 3.7% at 10 and 50 µg mL−1, respectively. The developed method was applied successfully to the determination of CTAB in personal care products, namely skin lotion and vaginal wash, in addition to water samples. The corresponding RSD (n = 5) values were ≤8.2%.
ISSN:2227-9040
2227-9040
DOI:10.3390/chemosensors10100434