Record Details


Field	Value

Title	Spectrophotometric determination of sodium dodecylbenzene sulphonate using congo red

Creator	Liu, Xiang-Hu Bai, Jing- Xu, Qing- Ren, Jiao-Rong Zhao, He-Ping Gao, Hong-Wen

Subject	Linear alkylbenezene sulphobates Sodium dodecylbenezene sulphonate Cetylpyridinium chloride Congo red Absorbance ratio difference

Description	488-492 A new spectrophotometric method is developed to determine sodium dodecylbenezene sulphonate (SDBS) in natural water without the use of organic hydrophobic solvents and two-phase extraction. In BR buffer solution (pH 2.03), SDBS replaces sodium diphenyl diazo-bis--naphthylamine-4-sulphonate (Congo red, CR) in CR-cetylpyridinium chloride (CPC) system. Application of absorbance ratio difference (ARD) to this replacement reaction gives a new spectrophotometric method for the determination of SDBS. The absorbance measurements are made at 590 nm and 469 nm. Results have shown that absorbance ratio difference (ΔAr) gives linear curve in the range of 3.3 -139.4 mg/L for SDBS. The limit of determination of SDBS (3δ/k) is 1.1 mg/L. The method has been employed to determine SDBS in natural water with satisfactory results. Relative standard deviation was less than 5%, and the recovery was about 103.7%. The method is comparable to new methylene blue (NMB) method.

Date	2009-01-22T06:14:08Z 2009-01-22T06:14:08Z 2008-09

Type	Article

Identifier	0971–457X http://hdl.handle.net/123456789/2841

Language	en_US

Publisher	CSIR

Source	IJCT Vol.15(5) [September 2008]

ICAR Research Data Repository for Knowledge Management