标题：Preliminary Study of Heavy Metal (Zn, Pb, Cr, As, Cu, Cd) Contaminations on Different Soil Level from Post-Mining Bauxite Production for Aquaculture
摘要：Bauxite production and exploration give negative impact
environmental modification and increasing concern pollution of heavy
metals. One of an alternative to reduce the negative impact of bauxite
post-mining production is by re-utilizing the abandoned bauxite land and
necessary exploratory study to obtain the current environmental conditions
primarily related to heavy metals in bauxite mining area. Soil and water
quality samples from 5 (five) sites based on post-mining activities were
used to determine concentration heavy metals of As, Cd, Pb, Zn, Cr, Cu
from different soil level. They were also collected for grain size analysis
including those of sand and mud percentages along with the mean, and
sorting analysis. The mean grain size post-mining bauxite ranged between
very fine sand to medium sand and had heterogeneous texture. The coarse
grain size percentage increased towards the bottom of the soil. Total heavy
metal contents for post-mining bauxite soils are 0,081 ppm, 0,245 to 0,471
ppm and 0,007 ppm for As, Pb and Cd respectively. Heavy metals for Cd,
uniformly at every depth from soil level. On the other hand, Pb showed
significance pattern, it was indicated every depth from soil level, the
concentration of Pb was different.
其他摘要：Bauxite production and exploration give negative impact environmental modification and increasing concern pollution of heavy metals. One of an alternative to reduce the negative impact of bauxite post-mining production is by re-utilizing the abandoned bauxite land and necessary exploratory study to obtain the current environmental conditions primarily related to heavy metals in bauxite mining area. Soil and water quality samples from 5 (five) sites based on post-mining activities were used to determine concentration heavy metals of As, Cd, Pb, Zn, Cr, Cu from different soil level. They were also collected for grain size analysis including those of sand and mud percentages along with the mean, and sorting analysis. The mean grain size post-mining bauxite ranged between very fine sand to medium sand and had heterogeneous texture. The coarse grain size percentage increased towards the bottom of the soil. Total heavy metal contents for post-mining bauxite soils are 0,081 ppm, 0,245 to 0,471 ppm and 0,007 ppm for As, Pb and Cd respectively. Heavy metals for Cd, uniformly at every depth from soil level. On the other hand, Pb showed significance pattern, it was indicated every depth from soil level, the concentration of Pb was different.
