Low-Level (PPB) Determination of Cisplatin in Cleaning Validation (Rinse Water) Samples. I. An Atomic Absorption Spectrophotometric Method

2000 ◽  
Vol 26 (4) ◽  
pp. 423-428 ◽  
Author(s):  
Rajagopalan Raghavan ◽  
Jo Anne Mulligan
Keyword(s):  
Atomic Absorption ◽  
Spectrophotometric Method ◽  
Water Samples ◽  
Low Level ◽  
Cleaning Validation ◽  
Rinse Water

Accurate determination of calcium stearate by atomic absorption spectrophotometric method in polymer

2008 ◽  
Vol 108 (4) ◽  
pp. 2638-2643
Author(s):  
Mir Ali Farajzadeh ◽  
Mahboobe Ghorbani Ravandi ◽  
Ali Ranji ◽  
Elham Feyz
Keyword(s):  
Atomic Absorption ◽  
Spectrophotometric Method ◽  
Accurate Determination ◽  
Calcium Stearate

scholarly journals Determination of cobalt in water samples by atomic absorption spectrometry after pre-concentration with a simple ionic liquid-based dispersive liquid-liquid micro-extraction methodology

2010 ◽  
Vol 8 (3) ◽  
pp. 617-625 ◽  
Author(s):  
Hossein Abdolmohammad-Zadeh ◽  
Elnaz Ebrahimzadeh
Keyword(s):  
Ionic Liquid ◽  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Water Samples ◽  
Limit Of Detection ◽  
Absorption Spectrometry ◽  
Experimental Conditions ◽  
Flame Atomic Absorption ◽  
Relative Standard

AbstractA rapid dispersive liquid-liquid micro-extraction (DLLME) methodology based on the application of 1-hexylpyridinium hexafluorophosphate [C6py][PF6] ionic liquid (IL) as an extractant solvent was applied for the pre-concentration of trace levels of cobalt prior to determination by flame atomic absorption spectrometry (FAAS). 1-Phenyl-3-methyl-4-benzoyl-5-pyrazolone (PMBP) was employed as a chelator forming a Co-PMBP complex to extract cobalt ions from aqueous solution into the fine droplets of [C6py][PF6]. Some effective factors that influence the micro-extraction efficiency include the pH, the PMBP concentration, the amount of ionic liquid, the ionic strength, the temperature and the centrifugation time which were investigated and optimized. In the optimum experimental conditions, the limit of detection (3s) and the enrichment factor were 0.70 µg L−1 and 60, respectively. The relative standard deviation (RSD) for six replicate determinations of 50 µg L−1 Co was 2.36%. The calibration graph using the pre-concentration system was linear at levels 2–166 µg L−1 with a correlation coefficient of 0.9982. The applicability of the proposed method was evaluated by the determination of trace amounts of cobalt in several water samples.

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