Preconcentration and Determination of Tin in Water Samples by Using Cloud Point Extraction and Graphite Furnace Atomic Absorption Spectrometry

Abstract

Abstract. A method based on cloud point extraction and graphite furnace atomic absorption spectrometry (GFAAS) was developed for the analysis of trace tin in water samples. After cloud point extraction, the tin in the water samples was preconcentrated and successfully separated from most interferents. During the procedure, 8-hydroxyquinoline (8-HQ) was used as chelating reagent, and Triton X-114 was added as surfactant. The parameters affecting the sensitivity and the extraction efficiency, such as solution pH, concentration of 8-HQ and Triton X-114, equilibration temperature and centrifuge time, were evaluated and optimized. Under the optimum conditions, a preconcentration factor of 96.2 was obtained for a 20 mL water sample. The detection limit (LOD) was as low as 0.012 ng mL À1 , and the analytical curve was linear in the range of 0.05-2.0 ng mL À1 with satisfactory precision (RSD <4.1%). The proposed method was successfully applied to the determination of trace tin in water samples with recoveries in the range of 85.0-112.0%.

Preconcentration/Cleanup Studies of Tin from Environmental Water Samples by Oxidized Multiwall Carbon Nanotubes Packed Column and its Determination by ETAAS

“…Despite its importance, during the last years, literature data have presented few works dedicated to this subject. Up to now, the methods developed for tin extraction with further determination by ETAAS have focused on cloud point extraction (Yuan et al 2005), co-precipitation (Zhang et al 2001), and solid phase extraction using conventional adsorbents, such as Amberlite IR120, activated carbon and C 18 (Tsogas et al 2009), and polyurethane foam loaded with dithiocarbamate (Arpadjan et al 1997). Therefore, there is still an expanding demand for the development of a new preconcentration/ cleanup methodology for tin determination in environmental water samples.…”

Investigation of tin adsorption on silica nanoparticles by using flow field-flow fractionation with offline inductively coupled plasma mass spectrometry

“…Considering high dilution occurred during Fl-FFF separation, high sensitivity spectrometry technique needs to be employed for tin detection. Based on previous works for tin determination, inductively coupled plasma mass spectrometry (ICP-MS) revealed the highest sensitivity among spectrometry techniques (Knápek et al 2009;Yuan et al 2005;Trandafir et al 2012). Therefore, in this study, Fl-FFF for silica nanoparticles with offline ICP-MS was employed to investigate adsorption behavior of tin onto silica nanoparticles.…”

Simultaneous preconcentration of copper, zinc, cadmium, and nickel in water samples by cloud point extraction using 4-(2-pyridylazo)-resorcinol and their determination by inductively coupled plasma optic emission spectrometry

“…Several papers have used as quantification technique for determination of trace metals after a preconcentration step by CPE the flame atomic absorption spectrometry (FAAS) [15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31], electrothermal atomic absorption spectrometry (ET-AAS) [32][33][34][35][36][37][38][39] or ICP-OES [40][41][42][43]. Most of the procedures developed for preconcentration of trace metals by CPE do not employ simultaneous extraction of metallic species.…”