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Acids and organic matter

Schofield RK, Samson HR (1954) Flocculation of kaolinite due to the attraction of opposite charged crystal faces. Discuss Faraday Soc 18 135-145 Schofield RK, Samson HR (1953) The defiocculation of kaolinite suspensions and the accompanying change-over from positive to negative chloride adsorption. Clay Miner BuU 2 45-51 Schulten HR (2001) Models of humic structures association of humic acids and organic matter in soils and water. In Qapp CE et al. Humic substances and chemical contaminants. Soil Science Society of America, Madison, Wl, pp 73-88... [Pg.375]

Nitric Acid and Organic Matter. The use of the mixed acids to digest organic matter may result in explosions. Explosions with vegetable oil,19 milk, calcium oxalate precipitates from plants,21 rat carcasses,22 finely ground plant material,21 and animal tissues21 have been documented. [Pg.435]

Nitric Acid and Organic Matter. In destroying organic matter prior to analysis, not more than 0.3 g of chlorate should be added or explosive oxidation may result.14... [Pg.490]

Nitric Acid and Organic Matter. A violent explosion may occur when organic residues are dissolved in the mixed concentrated acids.17... [Pg.588]

Henrichs, S.M., and Farrington, J.W. (1987) Early diagenesis of amino acids and organic matter in two coastal marine sediments. Geochim. Cosmochim. Acta 51, 1-15. [Pg.596]

Alfredsson, H., Condron, L.M., Clarholm, M. and Davis, M.R. (1998) Changes in soil acidity and organic matter following the establishment of conifers on former grasslands in New Zealand. Forest Ecology and Management 1 12,245-252. [Pg.304]

Nitric acid, fuming Organic matter, nonmetals, most metals, ammonia, chlorosulfonic acid, chromium trioxide, cyanides, dichromates, hydrazines, hydrides, HCN, HI, hydrogen sulflde, sulfur dioxide, sulfur halides, sulfuric acid, flammable liquids and gases... [Pg.1210]

In addition to the main acidulation reaction, other reactions also occur. Free calcium carbonate in the rock reacts with the acid to produce additional by-product calcium compounds and CO2 gas which causes foaming. Other mineral impurities, eg, Fe, Al, Mg, U, and organic matter, dissolve, the result being that the wet-process acid is highly impure. [Pg.225]

Explds at 60° after 13 sec in a sealed glass tube (Ref 4). Explds spontaneously when frozen and then thawed. Compd is a violent expl, extremely sensitive to impact or friction. It Jalso explds on exposure to strong light (sunlight or diffused), or when in contact with P, As, ozone, fused alkalies, and organic matter such as turpentine rubber, but not with sugar or resins. Metals strong acids do not cause it to expld,... [Pg.283]

Several processes act to increase soil acidity. As organic matter decays, it forms many organic carboxylic acids. Peat moss, for example, is entirely organic and has quite low pH, around 4. Acid rain, the result of... [Pg.1333]

Greer LE, DR Shelton (1992) Effect of inoculant strain and organic matter content on kinetics of 2,4-dichlorophenoxyacetic acid degradation in soil. Appl Environ Microbiol 58 1459-1465. [Pg.231]

Titration is a general word used in many different disciplines. Any time a solution of known concentration is used to find the amount of an unknown component in another solution, it can be called a titration. Although this type of analysis is very old, it still finds widespread used in chemical analysis. Titrations are used in soil analysis to measure soil acidity, soil organic matter content, and various constituents isolated from soil, particularly ammonia. [Pg.210]

Also, the changes in pH will cause changes in the charges of variable-charge clays and organic matter, thus the cation exchange capacity of acid soils will tend to increase and that of alkaline soils decrease. [Pg.112]

The necessary conditions are sources of iron oxide, dissolved 804 and organic matter, and sufficiently reducing conditions for reduction of 804 coupled to intermittent or localized oxidizing conditions to produce elemental 8 or polysulfide. Potential acidity develops by the removal of alkalinity (represented by HC03 in Equation 7.2) from the sediment by diffusion and tidal action. What... [Pg.213]

Bromine is present in brines as sodium bromide. The brines are heated to about 90°C and treated with chlorine to oxidize the bromide ions. The elemental bromine is then separated from the brine solution by blowing out with steam or air. The crude bromine—containing water, chlorine and organic matter—is purified, typically by a distillation process, and then dried with concentrated sulfuric acid. About 95% of the bromine is recovered from the brine. [Pg.241]

TABLE IV. Respiration Rates, Phenolic Acid Levels and Organic Matter in Knapweed and Non-knapweed Soils. [Pg.243]

See other pages where Acids and organic matter is mentioned: [Pg.144]    [Pg.428]    [Pg.123]    [Pg.296]    [Pg.306]    [Pg.144]    [Pg.428]    [Pg.123]    [Pg.296]    [Pg.306]    [Pg.495]    [Pg.221]    [Pg.297]    [Pg.56]    [Pg.168]    [Pg.439]    [Pg.169]    [Pg.178]    [Pg.352]    [Pg.844]    [Pg.21]    [Pg.157]    [Pg.305]    [Pg.105]    [Pg.188]    [Pg.824]    [Pg.161]    [Pg.200]    [Pg.1606]    [Pg.73]    [Pg.16]    [Pg.62]    [Pg.114]    [Pg.153]    [Pg.63]    [Pg.243]    [Pg.103]   
See also in sourсe #XX -- [ Pg.163 , Pg.198 , Pg.296 , Pg.388 , Pg.394 ]



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Organic matter acids

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