Potassium source

A variety of shale-protective muds are available which contain high levels of potassium ions (10). The reaction of potassium ions with clay, well known to soil scientists, results in potassium fixation and formation of a less water-sensitive clay. Potassium chloride, potassium hydroxide, potassium carbonate [584-08-7] (99), tetrapotassium pyrophosphate [7320-34-5] (100), and possibly the potassium salts of organic acids, such as potassium acetate [127-08-2] (101) and formate, have all been used as the potassium source. Potassium chloride is generally preferred because of its low cost and availabihty. 

Wallander, H. Wickman, T. (1999). Biotite and microcline as potassium sources in... 

Berger G., Velde B., and Aigouy T. (1999) Potassium sources and illitization in Texas Gulf Coast shale diagenesis. J. Sedim. Res. 69, 151-157. 

Potassium sources and their retrieval. The average K content of the earth s cmst is 2.4%, but leirge quantities of soluble K salts Eire used in the production of agricultural crops. 

Argonne National Laboratory. Available online. URL www.ead.anl. gov/pub/doc/potassium.pdf. Accessed on June 23, 2009. Human health fact sheet contains details on potassium sources, uses, and human health risks and benefits. 

Synonyms Octanoic acid, potassium salt Potassium octanoate Potassium n-octanoate Empiricai C8H15KO2 Properties Wh. powd. m.w. 182 Uses Binder, emulsifier, stabilizer, anticaking agent in foods potassium source in dietary supplements... 

It might seem that taking a daily supplement is the only way to ensure a daily potassium intake as high as 4.7 grams, but that is not the case. Nature provides many potassium-rich foods such as squash, potatoes, tomatoes, carrots, spinach, beans, bananas, apricots, prunes, melons, peaches, halibut, tuna, trout, and low-fat dairy products. Specific examples of the potassium content of a few dietary potassium sources are given in the following table ... 

There are hmited potassium sources other than farmyard manure (FYM), bought-in straw and animal feeds. Under certain circnmstances some restricted prodncts can be apphed. Potassinm, e.g. meadow salt or Silvinite, is an example of a restricted fertihser. In the case of Silvinite, the grower has to submit a recent soil analysis resnlt for the field in question. The soil index mnst be 0 or 1 for derogation to be given. This prodnct is prohibited for nse in some other European countries. 

Uses Binder, emuisifier, stabiiizer, anticaking agent in foods potassium source in dietary suppiements... 

As has been shown by Mortland et al [1956], biotite can be altered to vermiculite if interlayer potassium is used as a nutritional source by plants. In a long-term field experiment, the exchange capacity of the soil from plots that received no potassium over an 80-yr period was found to be increased by about 10% (Scheffer et al. [I960]). This effect, which was attributed to partial expansion of illites, was especially marked where heavy dressings of N fertilizer had been used, and the strain on the natural potassium sources was consequently high. 

Fig. 2.S (a) Ion chromatography of lithium, sodium, ammonium and potassium, (b) ion chromatography of magnesium, calcium and strontium, (c)ion chromatography of transition metals, (d) ion chromatography of lithium, sodium, ammonium and potassium Source Reproduced by permission from Elsevier Science, UK [13]...

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