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- W2028493230 abstract "Abstract Spectrophotometric determination of trace anionic surfactants such as SDS and SDBS in water samples based on a simple and rapid preconcentration technique of collection on an organic solvent-soluble membrane filter, has been proposed. The anionic surfactants are collected on a nitrocellulose membrane filter as an ionassociate complex with the cationic complex of iron (II)-3- (2-pyridyl)-5, 6-diphenyl – 1, 2, 4 – triazine (pyridyl diphenyltriazine, PDT). The membrane filter with the analyte is dissolved in a small volume of organic solvent, and the absorbance of the resulting solution is measured against a reagent blank. The maximum absorption is at 555 nm and the apparent molar absorptivities are 8.93x103 1 mol−1 cm−1 for SDS and 8.51x103 1 mol−1 cm−1 for SDBS. Beer's law is obeyed over the range of 10-100 μg for SDS and SDBS and the detection limit is 0.0043 mg 1−1 for SDS and 0.0052 mg 1−1 for SDBS, respectively on a 3 [sgrave] basis. Interference from Cu2+ and Ni2+ can be eliminated by masking." @default.
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- W2028493230 date "1998-02-01" @default.
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- W2028493230 title "Spectrophotometric Determination of Trace Anionic Surfactants Such as SDS and SDBS in Water After Preconcentration on an Organic Solvent-Soluble Membrane Filter" @default.
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- W2028493230 doi "https://doi.org/10.1080/00032719808001872" @default.
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