Keanekaragaman Tumbuhan Fitoremediasi Di Ekosistem Riparian DAS Citarum

Riparian ecosystems have a protective function of watersheds from pollution. One important component in riparian ecosystem is the presence of phytoremediation plants, which can degrade contamination content. This research is intended to identify the presence of undergrowth that functions as phytoremediation in Bojongsoang District which is one of the areas around the heavily polluted Citarum watershed zone[1]. The method used in this research is vegetation analysis using the quadrant method with 1x1 m2 plot size. Determination of sampling points used purposive sampling method. The results of the study found that the undergrowth as a potential phytoremediation included rumput teki (Cyperus rotundus), Beluntas (Pluchea indica), Alang-alang (Imperata cylindrica), Jejarongan (Chloris barbata), rumput gajah (Cyperus rotundus), and bayam duri (Amaranthus spinosus). Rumput teki (Cyperus rotundus) is phyto-extractions in mercury-contaminated soils and accumulators of Sn, Zn, As, Cu, and Pb. Alang-alang (Imperata cylindrical) is a cyanide phytoremediator which is able to extract Zn from contaminated soil, and absorb Pb from contaminated soil. Beluntas is able to accumulate Cu, Fe, Al, Pb and Zn in their roots, leaves and stems, and the leaves that can absorb Cr. Rumput gajah (Cyperus rotundus) are a Cd accumulator. Bayam duri (Amaranthus spinosus) hyperaccumulator against mercury. Studies on the presence of phytoremediation plants can provide preliminary information on the condition of riparian ecosystems in the Citarum watershed.

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Studi Potensi Gulma Sebagai Tanaman Obat di Kabupaten Jayawijaya

Agrotek ◽

10.30862/agt.v4i7.589 ◽

2018 ◽

Vol 4 (7) ◽

Author(s):

Anti Uni Mahanani

Keyword(s):

Medicinal Plants ◽

Data Collection ◽

Sampling Method ◽

Imperata Cylindrica ◽

Cyperus Rotundus ◽

Mimosa Pudica ◽

Ageratum Conyzoides ◽

Amaranthus Spinosus ◽

Eclipta Prostrata ◽

Physalis Angulata

<em>The purpose of this research is to identify the potency of gulma plant in jayawijaya region to become medicinal plants. Purpose Sampling method was being used in the data collection. The result of the inventaritation research found that there are 18 weeds utilized as medicine plants in jayawijaya region, namely: : Babandotan (Ageratum conyzoides), Rumput Gajah (Pannisetum purpureum), Putri Malu (Mimosa pudica), Kukuyaan (Corenia violacea), Ciplukan (Physalis angulata L.), Kecimbling Hijau dan Merah (Stachytarpheta mutabilis Vahl), Rumput Teki (Cyperus rotundus), Rumput 9 Dewa, Alang-Alang (Imperata cylindrica), Tapak Kuda/Gagan (Cantella asiatica L.), Patikan Emas (Euphorbia hirta L.), Biji Kacang, Boborongan (hyptis brevipes Poit), Bayam Berduri (Amaranthus spinosus L.), Urang-Aring (Eclipta prostrata L.), Tembelekan (Lantana camara L.), Tunjuk Langit, and Rumput Mutiara (Hedyotis corymbosa� (L).</em>

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Simple and Equipment-Free Paper-Based Device for Determination of Mercury in Contaminated Soil

Molecules ◽

10.3390/molecules26072004 ◽

2021 ◽

Vol 26 (7) ◽

pp. 2004

Author(s):

Hikmanita Lisan Nashukha ◽

Jirayu Sitanurak ◽

Hermin Sulistyarti ◽

Duangjai Nacapricha ◽

Kanchana Uraisin

Keyword(s):

Contaminated Soil ◽

Contaminated Soils ◽

Soil Samples ◽

Linear Calibration ◽

Detection Zone ◽

Free Paper ◽

Mining Areas ◽

Icp Ms ◽

Imagej Software

This work presents a simple and innovative protocol employing a microfluidic paper-based analytical device (µPAD) for equipment-free determination of mercury. In this method, mercury (II) forms an ionic-association complex of tetraiodomercurate (II) ion (HgI42−(aq)) using a known excess amount of iodide. The residual iodide flows by capillary action into a second region of the paper where it is converted to iodine by pre-deposited iodate to liberate I2(g) under acidic condition. Iodine vapor diffuses across the spacer region of the µPAD to form a purple colored of tri-iodide starch complex in a detection zone located in a separate layer of the µPAD. The digital image of the complex is analyzed using ImageJ software. The method has a linear calibration range of 50–350 mg L−1 Hg with the detection limit of 20 mg L−1. The method was successfully applied to the determination of mercury in contaminated soil and water samples which the results agreed well with the ICP-MS method. Three soil samples were highly contaminated with mercury above the acceptable WHO limits (0.05 mg kg−1). To the best of our knowledge, this is the first colorimetric µPAD method that is applicable for soil samples including mercury contaminated soils from gold mining areas.

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Stationary source emissions. Determination of the mass concentration of individual gaseous organic compounds. Sorptive sampling method followed by solvent extraction or thermal desorption

10.3403/30243101u ◽

2015 ◽

Keyword(s):

Solvent Extraction ◽

Organic Compounds ◽

Thermal Desorption ◽

Mass Concentration ◽

Sampling Method ◽

Stationary Source

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ANALISIS PERHITUNGAN HARGA POKOK PRODUKSI DAN PENENTUAN HARGA JUAL ATAS PRODUK (Studi Kasus Pada PT Dasa Windu Agung)

Jurnal Riset Manajemen dan Bisnis (JRMB) Fakultas Ekonomi UNIAT ◽

10.36226/jrmb.v1i2.23 ◽

2016 ◽

Vol 1 (2) ◽

pp. 183-190

Author(s):

Dwi Urip Wardoyo

Keyword(s):

Manufacturing Industry ◽

Sampling Method ◽

Manufacturing Companies ◽

Test Analysis ◽

Automotive Components ◽

Convenience Sampling ◽

Cost Of Production ◽

The Cost ◽

Keywords Cost

This study aims to determine the determination of the cost of production for products produced by PT. DWA. The Company is engaged in the manufacturing industry specialized in automotive components. Its activity is carried out through a series of production processes, so that expenses spent in the production will be calculated into the cost of the production sold. The population in this study were all manufacturing companies in Jakarta. Convenience sampling method selected one of the companies that get the confidence to assemble three national car project in Indonesia, namely Timor, Bakrie and Maleo. Test analysis used in this study is to test the calculation of full costing with job order costing. This study shows that (a) determination of the cost elements associated with the cost of production and (b) determining the cost of production on a product-based job costing with full costing approach. Keywords: cost of production, full costing

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Fractionation of Heavy Metals in Multi-Contaminated Soil Treated with Biochar Using the Sequential Extraction Procedure

Biomolecules ◽

10.3390/biom11030448 ◽

2021 ◽

Vol 11 (3) ◽

pp. 448

Author(s):

Mahrous Awad ◽

Zhongzhen Liu ◽

Milan Skalicky ◽

Eldessoky S. Dessoky ◽

Marian Brestic ◽

...

Keyword(s):

Heavy Metals ◽

Organic Matter ◽

Soil Organic Matter ◽

Soil Ph ◽

Contaminated Soil ◽

Contaminated Soils ◽

Extraction Procedure ◽

Sequential Fractionation ◽

Relationship Of ◽

The Relationship

Heavy metals (HMs) toxicity represents a global problem depending on the soil environment’s geochemical forms. Biochar addition safely reduces HMs mobile forms, thus, reducing their toxicity to plants. While several studies have shown that biochar could significantly stabilize HMs in contaminated soils, the study of the relationship of soil properties to potential mechanisms still needs further clarification; hence the importance of assessing a naturally contaminated soil amended, in this case with Paulownia biochar (PB) and Bamboo biochar (BB) to fractionate Pb, Cd, Zn, and Cu using short sequential fractionation plans. The relationship of soil pH and organic matter and its effect on the redistribution of these metals were estimated. The results indicated that the acid-soluble metals decreased while the fraction bound to organic matter increased compared to untreated pots. The increase in the organic matter metal-bound was mostly at the expense of the decrease in the acid extractable and Fe/Mn bound ones. The highest application of PB increased the organically bound fraction of Pb, Cd, Zn, and Cu (62, 61, 34, and 61%, respectively), while the BB increased them (61, 49, 42, and 22%, respectively) over the control. Meanwhile, Fe/Mn oxides bound represents the large portion associated with zinc and copper. Concerning soil organic matter (SOM) and soil pH, as potential tools to reduce the risk of the target metals, a significant positive correlation was observed with acid-soluble extractable metal, while a negative correlation was obtained with organic matter-bound metal. The principal component analysis (PCA) shows that the total variance represents 89.7% for the TCPL-extractable and HMs forms and their relation to pH and SOM, which confirms the positive effect of the pH and SOM under PB and BB treatments on reducing the risk of the studied metals. The mobility and bioavailability of these metals and their geochemical forms widely varied according to pH, soil organic matter, biochar types, and application rates. As an environmentally friendly and economical material, biochar emphasizes its importance as a tool that makes the soil more suitable for safe cultivation in the short term and its long-term sustainability. This study proves that it reduces the mobility of HMs, their environmental risks and contributes to food safety. It also confirms that performing more controlled experiments, such as a pot, is a disciplined and effective way to assess the suitability of different types of biochar as soil modifications to restore HMs contaminated soil via controlling the mobilization of these minerals.

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Dynamic of Morphological and Physiological Parameters and Variation of Soil Characteristics during Miscanthus × giganteus Cultivation in the Diesel-Contaminated Land

Agronomy ◽

10.3390/agronomy11040798 ◽

2021 ◽

Vol 11 (4) ◽

pp. 798

Author(s):

Valentina Pidlisnyuk ◽

Andriy Herts ◽

Volodymyr Khomenchuk ◽

Aigerim Mamirova ◽

Oleksandr Kononchuk ◽

...

Keyword(s):

Contaminated Soil ◽

Contaminated Soils ◽

Soil Characteristics ◽

Physiological Parameters ◽

Wastewater Sludge ◽

Contaminated Land ◽

Miscanthus Giganteus ◽

Uncontaminated Soil ◽

Stems And Leaves ◽

Biochar Amendment

Miscanthus × giganteus (M. × giganteus) is a perspective plant produced on marginal and contaminated lands with biomass used for energy or bioproducts. In the current study, M. × giganteus development was tested in the diesel-contaminated soils (ranged from 250 mg kg−1 to 5000 mg kg−1) and the growth dynamic, leaves quantity, plants total area, number of harvested stems and leaves, SPAD and NPQt parameters were evaluated. Results showed a remarkable M. × giganteus growth in a selected interval of diesel-contaminated soil with sufficient harvested biomass. The amendment of soil by biochar 1 (produced from wastewater sludge) and biochar 2 (produced from a mixture of wood waste and biohumus) improved the crop’s morphological and physiological parameters. Biochar 1 stimulated the increase of the stems’ biomass, while biochar 2 increased the leaves biomass. The plants growing in the uncontaminated soil decreased the content of NO3, pH (KCl), P2O5 and increased the content of NH4. Photosynthesis parameters showed that incorporating biochar 1 and biochar 2 to the diesel-contaminated soil prolonged the plants’ vegetation, which was more potent for biochar 1. M. × giganteus utilization united with biochar amendment can be recommended to remediate diesel-contaminated land in concentration range 250–5000 mg kg−1.

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Determination of Chemical Form of Antimony in Contaminated Soil around a Smelter Using X-ray Absorption Fine Structure

Analytical Sciences ◽

10.2116/analsci.21.769 ◽

2005 ◽

Vol 21 (7) ◽

pp. 769-773 ◽

Cited By ~ 53

Author(s):

Masaki TAKAOKA ◽

Satoshi FUKUTANI ◽

Takashi YAMAMOTO ◽

Masato HORIUCHI ◽

Naoya SATTA ◽

...

Keyword(s):

Fine Structure ◽

Contaminated Soil ◽

Chemical Form ◽

X Ray ◽

Absorption Fine ◽

X Ray Absorption

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Study on the Influence of the Lime and Peanut Dry Cake Amend Pb Contaminated Soil with Pakchoi

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.726-731.1755 ◽

2013 ◽

Vol 726-731 ◽

pp. 1755-1759

Author(s):

Jun Liu ◽

Jin Xia Nie

Keyword(s):

Contaminated Soil ◽

Inhibitory Effect ◽

Underground Part ◽

Lead Absorption ◽

Experimental Soil

In order to study the soil amend agent how to suppress the function of the vegetables absorb Pb, the Pb was added in the experimental soil in pakchoi pot, The lime and peanut dry cake were added to the experimental soil as modifier, and the varying concentrate of modifiers, lead effect on pakchoi biomass and lead accumulate were discussed in this paper. Through the determination of Pb content of aboveground and underground part of pakchoi by ICP, the lime and peanut dry cake can resist lead absorption were proved, and the lime achieved better inhibitory effect of the two. By analyzed the BCF of two parts of pakchoi, two types of modifiers had proved can reduce the pakchoi BCF of Pb in the soil. The lime was more efficient than the peanut dry cake on reducing BCF of Pb.

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