Determination of Total Tin in Environmental Biological and Water Samples by Atomic Absorption Spectrometry with Graphite Furnace

Abstract

Analysis of traces of tin using several analytical techniques (X-ray fluorescence, neutron activation, polarographic techniques and atomic absorption) have been tested. Parameters such as simplicity, rapidity, sensitivity and interferences are compared in order to choose the most useful method for practical purpose. Finally, flameless atomic absorption was chosen for the determination of total tin concentration in different natural samples. Digestion of biological samples (plant, plankton, fish, etc.) was achieved by using Lumatom (a trade organic chemical). Thus, the digested sample is directly injected into the graphite furnace. This digestion technique is suitable and rapid with a minimum of error (contamination and losses). For tin analysis in water samples, a preconcentration of tin is carried out by coprecipitation with 1, 10-phenanthroline and tetraphenyl boron. The precipitate is separated and dissolved in alcohol or in Lumatom. The sensitivity of this method is 0.1 ng absolute tin.

Comparison of four analytical techniques based on atomic spectrometry for the determination of total tin in canned foodstuffs

“…Several analytical methods have been used for the determination of tin in various food matrices. Among these includes X-Ray fluorescence (Yoshiki et al 2006), spectrophotometry (Gutierrez et al 1985;Capitán-Vallvey et al 1994;Huang et al 1997), neutron activation analysis (NAA) (Vermaercke et al 2009;Chiba et al 1994), spectrofluorimetry (Manzoori et al 2006;Rubio et al 1985), atomic absorption spectrometry (Knápek et al 2009;Dogan et al 1980;Martin et al 1994), atomic emission spectrometry (Perring et al 2002;Sumitani et al 1993;Ribeiro et al 2003), methods (Ekmekci et al 2000;Qiong et al 1999;Clinio et al 2004).…”

Speciation of inorganic and tetramethyltin by headspace solid‐phase microextraction and gas chromatography–mass spectrometry

“…antifouling paints, plant protection) and as polymerization‐catalysts (polyurethane foam). OT compounds enter the marine environment and accumulate in sediments, soil, surface water and sea water, reflecting the anthropogenic inputs 1–3 and for this reason their use as antifouling agents is now banned. Toxic effects are observed when food with more than 1.4 mg/L iSn is consumed 4.…”

Nutritional Metals in Foods by AAS

“…A report by (Dogan and Haerdi 1980) on the analysis of the tin content in peaches, pears, pineapple, mandarin, peeled tomato and fruit cocktail by a number ot techniques including AAS will now be presented. Sample preparation was achived by using Lumatom, which is a trade organic chemical that contains quaternary ammonium hydroxide suspended in isopropanol.…”