Review Article Open Access

NICKEL: ITS AVAILABILITY AND REACTIONS IN SOIL

Abstract

Nickel is an important pollutant element. Nickel content in the range of 50 to 100 mg/g (dry wt. basis) is indicative of its toxicity in plants. The reaction of Ni is dominated by sorption reactions on soil colloids where nature, relative proportions and concentrations are important. The availability of Ni to plants mainly influenced by soil pH. Ni behave largely like Zn in the soil plant system, but it forms strong chelates with soil organic matter, thereby showing closeness to Cu. Nickel is known to have toxic effect on plants. The major uses of Ni to combustion of coals gasoline and oil, alloy manufacture, electroplating and batteries. If the high concentration of Ni is taking up by the human, they cause lung concern.

S.S. CHAUHAN, RISIKESH THAKUR AND G.D. SHARMA

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