Flameless atomic absorption spectrophotometry

Kurz, D., Roach, J., and Eyrlng, E. J. "Determination of Zinc by Flameless Atomic Absorption Spectrophotometry . 

Yeh, Y-Y., and Zee, P. Mlcromethod for Determining Total Iron-Binding Capacity by Flameless Atomic Absorption Spectrophotometry". Clin. Chem. (1974), 20, 360-364. 

Tikhomirova et al. [685] developed a procedure for simultaneous concentration of mercury, lead, and cadmium from seawater by coprecipitation with copper sulfide. The isolation yield is 99% for mercury and lead, and 89% for cadmium. Mercury is determined by flameless atomic absorption spectrophotometry, and lead and cadmium by flame atomic absorption spectrophotometry. 

A method [62] has been described for the determination of down to 2.5pg kg-1 alkylmercury compounds and inorganic mercury in river sediments. This method uses steam distillation to separate methylmercury in the distillate and inorganic mercury in the residue. The methylmercury is then determined by flameless atomic absorption spectrophotometry and the inorganic mercury by the same technique after wet digestion with nitric acid and potassium permanganate [63]. The well known adsorptive properties of clays for alkylmercury compounds does not cause a problem in the above method. The presence of humic acid in the sediment did not depress the recovery of alkylmercury compounds by more than 20%. In the presence of metallic sulphides in the sediment sample the recovery of alkylmercury compounds decreased when more than lmg of sulphur was present in the distillate. The addition of 4M hydrochloric acid, instead of 2M hydrochloric acid before distillation completely, eliminated this effect giving a recovery of 90-100%. 

Renshaw GD. 1973. The determination of barium by flameless atomic absorption spectrophotometry using a modified graphite tube atomizer. At Absorpt Newsl 12 158-160. 

Renshaw, G. D. "The Estimation of Lead, Antimony, and Barium in Gunshot Residues by Flameless Atomic Absorption Spectrophotometry" C. R. E. Report 103, Home Office Central Research Establishment, Aldermaston, England, (197U)... 

Many alternative techniques, both qualitative and quantitative, have been investigated either for screening purposes or as primary methods. Such techniques include atomic absorption spectrophotometry, molecular luminescence, electron spin resonance spectrometry, X-ray analysis methods, and electro analytical methods. Flameless atomic absorption spectrophotometry (FAAS) is the technique that has almost completely replaced NAA. 

J. S. Wallace, Firearms Discharge Residue Detection Using Flameless Atomic Absorption Spectrophotometry, AFTE Journal 19, no. 3 (July 1987). 

M. T. Cabanis, G. Cassanas, J. C. Cabanis, S. Bran, Comparison of four methods for digesting food samples for determination of trace levels of cadmium by flameless atomic absorption spectrophotometry, J. Assoc. Off. Anal. Chem., 71 (1988), 1033-1037. 

Human milk contained relatively less Mn when compared to the other milk diets examined. The endogenous Mn concentrations of human milk, bovine milk, infant formula and rat milk used in the present studies as determined by flameless atomic absorption spectrophotometry were 8 + 3, 30 + 5, 73 + 4, 148 + 18 pg/liter respectively. It is possible that the higher concentrations of endogenous Mn in infant formula and rat milk might compete with the added 5 Mn for transport during the experiments. However, the addition of non-... 

T5. Thorpe, V. A., Determination of mercury in food products and biological fluids by aeration and flameless atomic absorption spectrophotometry. J. Ass. Offic. Anal. Chem. 54, 206-210 (1971). 

Direct Determination of Trace Metals in Seawater by Flameless Atomic Absorption Spectrophotometry... 

Flameless atomic absorption spectrophotometry is essentially very simple. A substrate upon which the sample matrix can be deposited is placed in or immediately adjacent to the spectrophotometer light beam, and a means of heating this substrate rapidly to 800°-3500°C is provided. Electrical resistance is usually the heating method used. The substrate... 

The Element.—Analytical methods for the determination of trace quantities of selenium in two very different materials have been described. The first275 employs the use of flameless atomic absorption spectrophotometry for the direct determination of selenium (and Pb, Bi, Se, Te, and Tl) at p.p.m. levels in high-temperature alloys. The second method276 is able to determine the selenium content of plant material at levels as low as 0.005 fxg g The method involves the reaction of SeIV with 4-nitro-o-phenylenediamine to form 5-nitropiaselenol, which may be detected by means of a gas chromatograph. 

Cacho J, Castells JE. 1989. Determination of mercury in wine by flameless atomic-absorption spectrophotometry. AtSpectrosc 10(3) 85-88. 

Wang H, Prasad AS, Dumouchelle R Zinc in platelets, lympohocytes and granulocytes by flameless atomic absorption spectrophotometry. J Micronutrient Ana) 1989 5 181-90,... 

To minimize the loss of materials, selective extractions were conducted in the centrifuge tubes in which the solids were originally stored. The volumes of the extracting solutions were proportioned to the weight of solids in the tube. Between each successive extraction, separation was affected by centrifugation (Sorvall Model RC2-B) at 10,000 rpm for 30 minutes. The supernatant was removed with a pipet and analyzed for trace elements. The concentrations of these elements in the extracts were determined by flameless atomic absorption spectrophotometry as described for the dissolved trace element analyses (15). The total concentration of a solid phase-associated trace element is the sum of the four extraction concentrations and does not include the residual (14) or crystalline (11) solid fraction. 

Buchet JP, Lauwerys R, Roels H. 1976. Determination of manganese in blood and urine by flameless atomic absorption spectrophotometry. Clin Chim Acta 73 481-486. 

Clegg MS, Lonnerdal B, Hurley LS, et al. 1986. Analysis of whole blood manganese by flameless atomic absorption spectrophotometry and its use as an indicator of manganese status in animals. Anal Biochem 157 12-18. 

Torjussen, W., Andersen, I. and Zachariasen, H. (1977). Analysis of small tissue samples by flameless atomic absorption spectrophotometry. Clin. Chem., 23,1018. 

Riner, J.C., Wright, W.C. and McBeth, C.A. (1974). A technique for determining lead in feces of cattle by flameless atomic absorption spectrophotometry. At. Absorpt. Newsl. 13. 129-130... 

Bourcier, D.R. and Sharma, R.P. (1981) A stationary cold-vapor technique for the determi-natio of submicrogram amounts of mercury in biological tissues by flameless atomic absorption spectrophotometry. J. Anal. Toxicol., 5, 65-68. 

Mitani, K. (1976) Environmental hygienic studies on mercury compounds. I. Selective determination of methylmercury and inorganic mercury by steam distillation and flameless atomic absorption spectrophotometry. J. Hygienic Chem., 22, 65-72. (Japanese english summary.)... 

Stainton, M.P. (1971) Syringe procedure for transfer of nanogram quantities of mercury vapor for flameless atomic absorption spectrophotometry. Anal. Chem., 43, 625-627. 

Henkin Rl, Mueller CW, Wolf RO. 1975a. Estimation of zinc concentration of parotid saliva by flameless atomic absorption spectrophotometry in normal subjects and in patients with idiopathic hypogeusia. J Lab Clin Med 86 175-180. 

Seven 4.45 cm diameter core samples and four bottom grab samples were collected from within the Cranberry Lake watershed. Core lengths which varied from 28 to 44 cm were vertically sectioned at observed lithologic changes and analyzed for total mercury concentrations utilizing flameless atomic absorption spectrophotometry following Environmental Protection Agency (1977) procedures. Table VII summarizes the mercury concentrations of all collected core samples. The four bulk bottom sediments were all collected from the same location and varied in mercury content from < 0.08 - 0.10 mg/kg. 

Collect the reaction solutions containing mercury ions which remain following completion of the manganese determination. Per 500 ml of solution treat with 30 g of sodium thiosulphate and then with 300 ml of 30 % sodium hydroxide solution. In this process the mercury is removed from the solution as sulphide. Hg2+ ions are no longer detectable in the filtrate of the supernatant colourless liquid (flameless atomic-absorption spectrophotometry detection limit 0.001 mg/1). 

The most common analytical methods that can sensitively measure manganese include neutron activation analysis, X-ray fluorescence, proton-induced X-ray emission, inductively coupled plasma emission, EPR, and flameless atomic absorption spectrophotometry (AAS). Currently, the most common method employed is flameless AAS. All of these methods, with the exception of EPR, measure the total concentration of manganese in the samples. EPR allows selective measurement of bound versus free manganese. 

Le Bihan, A., J. Courtot-Coupez, Cationic surfactants using flameless atomic absorption spectrophotometry, Analusis, 1976,4, 58-64. 

---