Kandungan Timbal Dan Amonium Pada Tanah Gambut Fibrik Terbakar Berulang
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Date
2018-03-12
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Abstract
Peat is an organic material which derives from plants decays remants that get buried
naturally over a very long time period at depths greater than 50 cm. this research
undertakes an analysis of heavy metal content, that is lead and alkali metals is ammonium
ions at oil palm plantations in Pakning Asal Village, Bengkalis district, Riau with different
fire occurrence frequencies, as follows: on unburnt land, on once burned land, and on land
burned several times (at least 2 – 3 times). The analysis of heavy metals was carried out by
using an Atmonic Absorption Spectrophotometer (AAS) while that of ammonium ions
using a UV-Vis Spectrophotometer. The content of lead metal decreased in an inversely
proportional ratio to the fire occurrence frequency as follow: from 47,8914 mg/Kg to
46,7016 mg/Kg in unburned soil, from 37,1366 mg/Kg to 22,5753 mg/Kg on once burned
soil, and finally from 29,6936 mg/Kg to 23,3249 mg/Kg on soil burned several times (at
least 2 – 3 times). The content of available ammonium ions on unburned soil resulted to be
of 16,5023 mg/Kg, of 21,0386 mg/Kg on once burned soil, and finally of 18,5005 mg/Kg on
soil burned several times (at least 2 – 3 times). Based on the level of maturity, this
peatland is fibric (still raw), with a fiber percentage greater than >75%.
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Keywords
Ammonium ion, fibric, lead, peat soil