REMEDIASI TANAH TERCEMAR TIMBAL (Pb) DAN AKUMULASINYA PADA TANAMAN GUMITIR (Tagetes erecta L.)

I. K. S. P. Dewi, N. L. G. A. Sunariani, I. E. Suprihatin
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Abstract

Lead (Pb) is a common pollutant found in agricultural soils and often contaminates the plants growing on the soil. One way to reduce the content of heavy metal contamination such as Pb in agricultural soil is through phytoremediation. The purpose of this study was to reduce the content of Pb in agricultural soils. The method used was remediation by planting gumitir (Tagetes erecta L.) plants on the soil added with various concentrations of Pb2+. The results showed that before planting with gumitir, the soil A, B, C added with Pb of 100; 200; and 400 mg Pb/kg soil, respectively, having the concentration of 108,97±2,25; 214,18±5,47; and 447,04±4.89 mg/kg, respectively, while on the harvesting time the concentration of Pb was 100,52±1,66; 170,04±2,88; and 397,98±2,24 mg/kg, respectively. The part of the plant that absorbed the highest Pb was the root, which was 47,01±4,52 mg/kg. The effectiveness of Pb absorption by gumitir plants in A, B, and C soils were <50% with TF and BCF values ??< 1, so the mechanism in accumulating lead metal is less effective or called phytostabilization. Keywords: adsorption, effectiveness, lead, remediation, Tagetes erecta L.
铅改良土壤(Pb)及其在GUMITIR (Tagetes erecta L)上的固化。
铅(Pb)是农业土壤中常见的污染物,经常污染土壤上生长的植物。减少农业土壤中铅等重金属污染的途径之一是通过植物修复。本研究旨在降低农业土壤中铅的含量。采用在添加不同浓度Pb2+的土壤上种植万寿菊(Tagetes erecta L.)作为修复方法。结果表明:施胶前,土壤A、B、C添加100的Pb;200;和400 mg Pb/kg土壤,浓度为108,97±2,25;214年,18±5,47岁;和447、04±4.89 mg/kg,采收时Pb浓度分别为100、52±1.66;170年,04±2,88;分别为397、98±2、24 mg/kg。植株吸收Pb最高的部位为根系,分别为47、01±4、52 mg/kg。A、B、C三种土壤中甘油三酯植物对Pb的吸收效率均<50%,其TF和BCF值分别为??< 1,因此积累铅金属的机制不太有效或称为植物稳定。关键词:吸附,有效性,铅,修复,万寿菊
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