Wet Digestion Methods

Spectrophotometry X-ray diffraction Combustion methods Wet digestion methods Miscellaneous... 

It is seen by examination of Table 1.11(b) that a wide variety of techniques have been employed including spectrophotometry (four determinants), combustion and wet digestion methods and inductively coupled plasma atomic emission spectrometry (three determinants each), atomic absorption spectrometry, potentiometric methods, molecular absorption spectrometry and gas chromatography (two determinants each), and flow-injection analysis and neutron activation analysis (one determinant each). Between them these techniques are capable of determining boron, halogens, total and particulate carbon, nitrogen, phosphorus, sulphur, silicon, selenium, arsenic antimony and bismuth in soils. 

Spectro- photometry Atomic absorption spectro- metry Inductively coupled plasma atomic emission spectrometry X-ray methods Ion selective electrodes Wet digestion methods Miscellaneous... 

Landers et al. [97] and others [98] have described a wet digestion method for the determination of total sulphur in soils. In this method the sample (1.50-500mg) is placed in a digestion flask and heated in a sand bath to dryness at 250°C with 3ml of sodium hypobromite solution. The residue is resuspended with water, neutralized with formic acid, and then hydriodic acid reduction of the sample is followed to quantitatively recover the inorganic sulphate formed by wet oxidation. 

Two mbber reclaiming plants use the wet digestion method for reclamation of mbber. 

Two open-vessel wet digestion methods using mixtures of nitric and sulfuric acids and H2O2 were developed and optimised to determine metals in plants... 

Matusiewicz, H. 2003. Wet digestion methods. In Z. Mester and R. Sturgeon (eds), Sample Preparation for Trace Element Analysis, pp. 193-233. Amsterdam Elsevier. 

S. B. Adeloju, A. M. Bond, M. H. Briggs, Critical evaluation of some wet digestion methods for the stripping voltametric determination of selenium in biological materials, Anal. Chem., 56 (1984), 2397-2401. 

Determine the amount of heavy metals by Method I or Method II as the following criteria specify Use Method I for samples that yield clear, colorless solutions before adding sulfide ion. Use Method II for samples that do not yield clear, colorless solutions under the test conditions specified for Method I. Use Method III, a wet digestion method, only in those cases where neither Method I nor Method II can be used. 

Adrian, W.J. A new wet digestion method for biological material utilizing pressure. At Absorption Newsl. 10, 96 (1971)... 

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