Spectrophotometric and derivative spectrophotometric determination of palladium(II) using pyridopyridazine dithione in the presence of non-ionic surfactant

1998 ◽  
Vol 129 (3-4) ◽  
pp. 225-231 ◽  
Author(s):  
A. Youssef El-Sayed ◽  
Fathi A. Abu-Shanab
Keyword(s):  
Spectrophotometric Determination ◽  
Ionic Surfactant

Spectrophotometric determination of manganese with 1-(2-pyridylazo)-2-naphthol and a non-ionic surfactant

Talanta ◽  
1977 ◽  
Vol 24 (12) ◽  
pp. 752-753 ◽  
Author(s):  
Katsumi Goto ◽  
Shigeru Taguchi ◽  
Yoko Fukue ◽  
Keiko Ohta ◽  
Hiroto Watanabe
Keyword(s):  
Spectrophotometric Determination ◽  
Ionic Surfactant

scholarly journals Spectrophotometric Determination of Zirconium by Dispersive Liquid-Liquid Microextraction based on Solidification of Floating Organic Droplets

2020 ◽  
Vol 32 (12) ◽  
pp. 3191-3196
Author(s):  
Intizam Ahmadov
Keyword(s):  
Spectrophotometric Determination ◽  
Limit Of Detection ◽  
Ph Effect ◽  
Ionic Surfactant ◽  
Ligand Effect ◽  
Limit Of Quantification ◽  
Relative Standard ◽  
Dispersive Liquid Liquid Microextraction ◽  
Liquid Microextraction

In this study, a new method was developed for the spectrophotometric determination of zirconium by the procedure of dispersive liquid-liquid microextraction based on the solidification of floating organic droplets (DLLME-SFO). o-Nitrobenzene-azopyrocatechol (o-NBAP) and non-ionic surfactant (OP-10) were used in the complex formation. At the first stage, a separation and solidification processes were carried out, after which the solidified samples were examined by spectrophotometric method. The effect of various parameters viz. pH effect, ion resistance, ligand effect, volume and type of extraction and dispersion solution, extraction time and temperature effect were studied. The results of the experiment were optimized with design programs. The calibration curve was linear ranging from 0.5 to70 μg L-1, with a correlation coefficient of 0.998. The limit of detection (LOD) is 0.12 μg L-1, the limit of quantification (LOQ) is 0.40 μg L-1 and the relative standard deviation (RSD) at 60 μg L-1 is 1.6% (n=6). This method was also applied to determine zirconium in various water samples. The obtained reextraction amount was 98-110%.

scholarly journals Cloud Point Extraction for Pre-Concentration and Spectrophotometric Determination of Trace Amounts of Silver Ions

2020 ◽  
Vol 10 (03) ◽  
pp. 459-464
Author(s):  
Azhar A. Ghali
Keyword(s):  
Detection Limit ◽  
Cloud Point ◽  
Spectrophotometric Determination ◽  
Cloud Point Extraction ◽  
Incubation Temperature ◽  
Chelating Agent ◽  
Silver Ions ◽  
Ionic Surfactant ◽  
Triton X

During the last years, the cloud point extraction was applied for determination, separation, and enrichment of the elements. The current study used cloud point extraction (CPE) for the extraction of Ag(I) ions pre-concentration from watery solutions by a non-ionic surfactant (Triton X-114) and chelating agent a 6-(4-bromo-phenylazo)m-anisidine[6-(4-BrPAA)], then estimation by using the spectrophotometry at 514 nm. Several condition effects on the efficiency of the cloud-point extraction included Triton X-114 concentration, [6-(4-BrPAA)] concentration, pH, time, and incubation temperature. The silver reacts with [6-(4-BrPAA)] to produce complex at a ratio of one to one. 0.009 to 1.5 μg mL-1 is the range of linearity. The detection limit and quantification of Ag(I) ion were 0.0054 and 0.0182 μg mL-1, respectively. The interference of the cations was examined. The cloud-point extraction was used for the evaluation of silver concentration in the water specimen.

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