scholarly journals PERTUMBUHAN BIBIT KELAPA SAWIT (Elaeis guineensis Jacq.) DI PEMBIBITAN UTAMA PADA MEDIUM SUB SOIL ULTISOL YANG DIBERI ASAM HUMAT DAN KOMPOS TANDAN KOSONG KELAPA SAWIT

2016 ◽  
Vol 6 (1) ◽  
pp. 25
Author(s):  
JANRICO VALENTINO SEMBIRING ◽  
NELVIA NELVIA ◽  
ARNIS EN YULIA
Keyword(s):  
Organic Matter ◽  
Humic Acid ◽  
Plant Height ◽  
Oil Palm ◽  
Elaeis Guineensis ◽  
Organic Matter Content ◽  
Matter Content ◽  
Low Fertility ◽  
Empty Fruit Bunches ◽  
Number Of Leaves

Ultisol have low fertility, the sub soil of ultisol have fertility and organic matter content are very low. Compost of oil palm empty fruit bunches (OPEFB) and humic acid are useful improving fertility and organic matter content so that it can support growth of the plant. The research aims to study the effect of application of compost OPEFB and humic acid on sub soil ultisol to growth of the oil palm seedling’s in the main nursery. The experiment was conducted at the Experimental Farm of the Faculty of Agriculture, University of Riau, Pekanbaru. The experiment were carried out in the form of factorial with a completely randomized design. The first factor is compost of OPEFB that consists of 4 levels (0, 25, 50 and 75 g/polybag) and as the second factor is the humic acid that consists of 3 level (0, 25 and 50 g/polybag). The parameters observed were statistically analyzed using analysis of variance, followed by Duncan’s multiple range test at 5%.The parameters measured were plant height, in the number of leaves, the increase in diameter stump, root crown ratio, dry seedling weight. The results slowed that the application of compost of OPEFB 25-75 g/polybag followed by humic acid 25, 50 g/polybag significantly increased plant height, in the number of leaves, the increase in diameter stump, root crown ratio, dry seedling weight composed than without compost OPEFB and humic acid, but now significantly with the other combination action.

Adsorption of Chloridazon by Soils and their Components

Weed Science ◽  
1991 ◽  
Vol 39 (3) ◽  
pp. 417-422 ◽  
Author(s):  
Maria J. Sánchez-Martín ◽  
Maria Sáanchez-Camazano
Keyword(s):  
Organic Matter ◽  
Humic Acid ◽  
Clay Fraction ◽  
Organic Matter Content ◽  
Clay Content ◽  
Matter Content ◽  
Soil Composition ◽  
Active Components ◽  
Central Spain ◽  
Natural Soils

The effect of soil composition on adsorption of chloridazon by 18 samples of natural soils, with different chemical and textural characteristics, obtained from west-central Spain, was investigated. The effect of removal of organic matter on adsorption and adsorption of the herbicide by the active components of the soils (montmorillonite and humic acid) was also studied. A highly significant correlation was found between the distribution coefficient (Kd) and organic matter content when all the soils or the soils with organic matter content >2% were considered. According to the determination coefficients (r2), organic matter content accounted for 72% of the variance in adsorption in the former case and 92% in the latter. In soils with an organic matter content <2%, there was no correlation between Kd and organic matter content. A significant correlation was observed between Kd and smectite content for soils containing smectite in their clay fraction. Both simple and multiple correlations showed that clay content, excluding the smectite fraction, had a relatively small effect on adsorption of the herbicide. Adsorption of chloridazon by oxidized soils, montmorillonite, and humic acid confirms the effect of organic matter and smectite on adsorption in natural soils.

scholarly journals PERTUMBUHAN BIBIT KELAPA SAWIT (Elaeis gueneensis Jacq) DI PEMBIBITAN UTAMA (MAIN NURSERY) PADA MEDIUM SUBSOIL ULTISOL YANG DIAPLIKASIKAN AMELIORAN ANORGANIK DAN ORGANIK

2019 ◽  
Vol 33 (1) ◽  
pp. 75-84
Author(s):  
Fauzan Abadi ◽  
Nelvia Nelvia
Keyword(s):  
Fly Ash ◽  
Plant Height ◽  
Oil Palm ◽  
Empty Fruit Bunches ◽  
Randomized Design ◽  
Number Of Leaves ◽  
Completely Randomized Design ◽  
Leaf Midrib ◽  
Inorganic And Organic

The research aims to study the effect of inorganic and organic ameliorant dressing on ultisol subsoil medium on the growth of oil palm (Elaeis gueneensis Jacq)seedling in the main nursery. The research was conducted at greenhouse AgricultureFaculty, Riau University Pekanbaru from June to November 2016.The experiment in form factorial using Completely Randomized Design (CRD).The first-factor is an organic ameliorant ei.fly ash and dregs consist of 4 levels (without ameliorant, 50 g fly ash, 50 g dregs and 25 fly ash + 25 dregs per polybag). The second factor is organic ameliorant ei.cocopeat and oil palm empty fruit bunches compost (OPEFBC)consist of 6 levels (without ameliorant, 100 g cocopeat, 100 g OPEFBC, 50 g cocopeat + 50 g OPEFBC, 100 g cocopeat + 50 g OPEFBC and 50 g cocopeat + 100 g OPEFBC per polybag). The parameters observed were the addition of plant height, number of leaves, a diameter of the stump, length of leaf midrib and leaves. The results showed that the combination of 50 g dregs/polybag with 100 g OPEFBC/polybag increased the plant height and combination of 25 g fly ash + 25 g dregs with 50 g cocopeat + 50 OPEFBC increased diameter of stump and length of leaf midrib significantly compared to without ameliorant, but non significantly compared to another combination.

scholarly journals Parameters of Soybean Cultivated in Succession With Intercropping System of Out-of-Season Corn With Green Manure

2019 ◽  
Vol 7 (2) ◽  
pp. 272 ◽  
Author(s):  
Geovani Genovesi ◽  
Giuliano Patrick Rasera ◽  
Humberto Misdei Moreski ◽  
Daniele Fernanda Felipe ◽  
André Ribeiro Da Costa ◽  
...  
Keyword(s):  
Organic Matter ◽  
Plant Height ◽  
Green Manure ◽  
Organic Matter Content ◽  
Control Area ◽  
Matter Content ◽  
Production Chain ◽  
Brachiaria Ruziziensis ◽  
Corn Crop ◽  
High Yields

Most Brazilian soils have low organic matter content, and the current management systems used in agriculture contribute to worsening this situation. The introduction of practices that lead to the increase of soil organic matter becomes more necessary for agrosystems to be sustainable, ensuring high yields because only then the production chain becomes profitable and enables agricultural production. The present work aimed to investigate the effect of intercropping practices among corn crop with different green manures in soybean agronomic parameters. The work consisted of five treatments using Brachiaria ruziziensis (Brachiaria); Raphanus sativus (Forage Turnip); Crotalaria spectabilis cv. Common (Crotalaria); Avena strigosa (Black Oats); and a control area (single maize) with five replications. Different aspects related to successor cultivation with soybean were evaluated taking into consideration agronomic aspects such as stem thickness, number of pods, plant height, the weight of one thousand grains and yield per hectare presented by the crop. The work demonstrated that brachiaria green manure in consortium with out-of-season corn crop promoted the highest plant height and number of pods for the soybean crop in succession.

scholarly journals The influence of different matrices on the nature and content of haloacetic acids precursors in ozonized water

2012 ◽  
Vol 66 (2) ◽  
pp. 253-261 ◽  
Author(s):  
Jelena Molnar ◽  
Jasmina Agbaba ◽  
Bozo Dalmacija ◽  
Mile Klasnja ◽  
Malcolm Watson ◽  
...  
Keyword(s):  
Organic Matter ◽  
Humic Acid ◽  
Acid Solution ◽  
Organic Matter Content ◽  
Disinfection Byproducts ◽  
Matter Content ◽  
Haloacetic Acid ◽  
Equal Distribution ◽  
Water Matrix ◽  
Synthetic Matrix

This paper investigates the influence of different matrices (groundwater a realistic natural matrix and commercial humic acid solution a synthetic matrix) on the nature and content of haloacetic acid (HAA) precursors in ozonized water (0.4 to 3.0 mg O3/mg DOC; pH 6). Natural organic matter (NOM) characterization of the natural matrix showed it was largely of hydrophobic character (65% fulvic and 14% humic acids), with the hydrophilic fractions HPIA and HPI-NA at 12% and 9%, respectively. At approximately the same dissolved organic carbon (DOC) content of the investigated matrices (~10 mg /L), a greater degree of hydrophobicity was seen in the humic acid solution than in the natural matrix, resulting in a higher content of HAA precursors (559 ? 21 ?g/L in the synthetic matrix compared to 309 ? 15 ?g/L in the natural matrix). By applying different ozone doses (0.4 to 3.0 mg O3/mg DOC), the DOC content of the studied matrices was reduced by 6-22%, with a maximum process efficacy being achieved with 3.0 mg O3/mg DOC. Ozonation also lead to changes in the NOM structure, i.e. complete oxidation of the humic acid fractions in both investigated matrices. After oxidation, hydrophilic structures dominate the natural water matrix (65%), whereas the synthetic matrix has an equal distribution of hydrophobic and hydrophilic fractions (~50%). Changes in the content and structure of NOM during ozonation resulted in the reduction of the total HAA precursors content (63-85%, using 3.0 mg O3/mg DOC). Detailed analysis of the reactivity of the residual HAA precursor materials shows that ozonation using 3.0 mg O3/mg DOC reduced the reactivity of the NOM fractions in comparison to the raw water. By contrast, HAA precursor material present in the commercial HA solution was transformed after ozonation into other reactive compounds, i.e. precursors which originated from the fulvic acid and hydrophilic fractions. The results of the laboratory testing indicate that the application of ozonation can reduce the content of haloacetic acid precursors to some degree. However, in real applications of oxidative treatment in the preparation of drinking water, as well as the efficacy in reducing the total organic matter content, the nature of the residual NOM must also be taken into account, as it can include toxic reactive precursors to disinfection byproducts.

scholarly journals PENGARUH PUPUK KISERIT TERHADAP PERTUMBUHAN KELAPA SAWIT DAN PRODUKTIVITAS TANAH

2020 ◽  
Vol 17 (4) ◽  
pp. 133
Author(s):  
A. KASNO ◽  
NURJAYA NURJAYA
Keyword(s):  
Plant Growth ◽  
Plant Height ◽  
Oil Palm ◽  
Elaeis Guineensis ◽  
Block Design ◽  
Dry Weight ◽  
Soil Productivity ◽  
Number Of Leaves ◽  
Mg Content ◽  
Leaf Midrib

<p>ABSTRAK</p><p>Perluasan lahan perkebunan kelapa sawit lebih diarahkan padalahan-lahan di luar Pulau Jawa. Lahan yang tersedia bersifat marginalseperti pada tanah Ultisols dan Oxisols. Pada lahan tanah tersebut telahmengalami pencucian yang hebat karena curah hujan yang tinggi sehinggakadar hara Mg rendah. Sumber hara Mg yang banyak digunakan adalahpupuk kiserit (Mg dan S), dolomit (Ca dan Mg) dan pupuk majemuk.Penelitian bertujuan untuk mempelajari peranan pupuk kiserit terhadappertumbuhan dan produktivitas tanah. Penelitian dilakukan di kebunpembibitan Cimulang, Kabupaten Bogor (PTP. Nusantara VIII), padaFebruari – Desember 2005. Tanah yang digunakan untuk penelitian adalahUltisols dan Oxisols. Rancangan menggunakan acak kelompok, 5perlakuan, ulangan 9 kali. Satu perlakuan terdiri dari satu tanaman bibitkelapa sawit. Pupuk Mg yang digunakan adalah kiserit powder 2 Pandadan kiserit yang telah beredar di pasaran sebagai standar. Dosis pupukkiserit yang dicoba: 0; 0,5; 1,0; dan 1,5 g/tanaman. Pupuk kiserit danpupuk dasar diberikan setiap 2 minggu sekali atau 12 kali pemberian.Pemupukan pertama diberikan pada umur 1 minggu, mulai pemupukan ke-2 dosis pupuk dikalikan 2, mulai minggu ke 10 dosis pupuk dikalikan 3,dan mulai minggu ke-18 dosis pupuk dikalikan 4. Contoh tanah bulk darilapang dikeringanginkan, diayak dengan saringan 2 mm, ditimbang 20 kgdan dimasukkan ke dalam polybag. Hasil penelitian menunjukkan bahwapemupukan kiserit pada Ultisols dapat meningkatkan tinggi, jumlah daun,diameter batang, bobot kering tanaman bibit kelapa sawit, serta mening-katkan hara Mg dalam tanah dari 1,25 menjadi 3,04 me/100 g dan kadarMg dalam tanaman menjadi 0,31 g/100 g. Pemupukan kiserit pada Oxisolsmeningkatkan tinggi, jumlah daun, diameter batang, bobot kering tanamanbibit kelapa sawit, serta meningkatkan hara Mg dalam tanah dari 0,28menjadi 2,36 me/100 g dan kadar Mg dalam tanaman menjadi 0,34 g/100g.Dosis optimum pupuk kiserit pada Ultisols dan Oxisols sama yaitu 0,80 g/tanaman. Pengaruh pupuk kiserit terhadap pertumbuhan bibit kelapa sawitdan produktivitas tanah sama dengan kiserit yang telah beredar di pasaransebagai standar.</p><p>Kata kunci: Elaeis guineensis, pupuk kiserit, status hara Mg, pertumbuhantanaman, produktivitas tanah</p><p>ABSTRACT</p><p>The Effect of Kieserite Fertilizer to Oil Palm Growth andSoil Productivity</p><p>The expansion of oil palm plantation is driven to outside JavaIsland. The available lands are marginal such as Ultisols and Oxisols,where intensive bleaching occurs for the high rate of rainfall, and causesthe low content of magnesium in such land. There are three sources used toprovide the Mg nutrient, such as kieserite (Mg and S), dolomite (Ca andMg) and compound fertilizer. The objective of this experiment was tostudy the effect of kieserite fertilizer on plant growth and soil productivity.This research was conducted in the seedling plot of Cimulang Site, BogorDistrict (PTP. Nusantara VIII) in February- December 2005 on Ultisolsand Oxisols using a randomized complete block design with 5 treatmentsand 9 replicates. One oil palm seedling was planted in each treatment. Thisexperiment used kieserite powder 2 Panda to provide Mg and ordinaryKieserite as the standard. The kieserite dosages were 0, 0.5, 1.0, and 1.5g/plant. Fertilizing the plot was done every 2 weeks, using kieserite andbasic fertilizer or fertilizing 12 times, but the first fertilization was donewhen the plants reached 1 week of age. Starting on the second fertilization,the dosage was multiplied 2 times, and starting on the 10 th week, thedosage was multiplied 3 times, and starting on 18 th week the dosage offertilizing is multiplied 4 times. Bulk soil samples were air-dried, sievedpassing 2 mm siever, and put 20 kg into polybags. The research resultshowed that kieserite fertilization on Ultisols increased plant height,number of leaves, stems (leaf midrib) diameter, dry weight of biomass, Mgnutrient content in the soil (from 1.25 to 3.04 me/100 g), and alsoincreased the plant Mg content to become 0.31 g/100 g. In addition,kieserite fertilization on Oxisols increased plant height, number of leaves,stems (leaf midrib) diameter, plant dry weight of oil palm seedling, Mgnutrient content in the soil, (from 0.28 into 2.38 me/100 g), and increasedplant Mg content into 0.34 g/100 g. The optimum kieserite fertilizingdosage on Ultisols and Oxisols was just the same, i.e. 0.80 g/plant. Theeffect of these two kinds of kieserite to the plant growth and soilproductivity was just almost the same.</p><p>Key words: Elaeis guineensis, kieserite fertilizer, Mg nutrient status, plantgrowth, soil productivity</p>

scholarly journals Using cassava waste of the cassava starch processing as food for raising African Nightcrawler (Eudrilus eugeniae) to obtain vermicomposting and earthworm biomass

2020 ◽  
Vol 12 (2) ◽  
pp. 169-176
Author(s):  
Thi Minh Thanh LE ◽  
Duc Anh HOANG ◽  
Ha Phuong NGUYEN ◽  
Viet Van TRINH ◽  
Thi Hoa TRAN ◽  
...  
Keyword(s):  
Organic Matter ◽  
Humic Acid ◽  
Total Nitrogen ◽  
Organic Matter Content ◽  
Cassava Starch ◽  
Matter Content ◽  
Raw Material ◽  
Eudrilus Eugeniae ◽  
Earthworm Biomass ◽  
Cassava Waste

The raising earthworms by cassava waste is a useful solution to reduce environmental pollution caused by cassava starch processing. In this study, cassava waste (including cassava peel, cassava pieces and soil) was used as a food source for raising African Nightcrawler (Eudrilus eugeniae) with three experiments: E1, earthworms were raised in crushed cassava waste right after being discharged; E2, earthworms raised in crushed cassava waste that had been incubated with organic matter after decomposing microbiological preparation for the previous two weeks; E3, earthworms were raised in crushed cassava waste that had self-decomposed naturally for the previous two weeks. The cassava waste was decomposed naturally for 4 weeks for control. The results showed that the content of organic matter, humic acid and total nitrogen in organic cassava humus, obtaining from experiments, increased compared to the control; the total organic matter content reached from 10.4%-15.7%, higher than the control (8.2%) from 1.27-1.92 times, humic acid content reached 0.6 - 0.8% and total nitrogen reached 0.3%. Experiment 3 had the highest quality of humus (organic matter content 15.7%, total nitrogen 0.3%, humic acid 0.7% and fulvic acid 0.5%). The experiment 3 also had the highest earthworm biomass (3.6kg), increasing 30.5% compared to experiment 1 and 19.4% comparing to experiment 2. Therefore, experiment 3 was proposed for application in treatment of cassava waste at larger scale. The organic humus obtaining from raising earthworms by cassava waste can be used as raw material for vermicompost production. The earthworm biomass can be used as protein-rich food for domestic animals (such as chicken, tortoise, eel, fish, etc) or used as nutritious fertilizer. Nuôi giun bằng phế liệu sắn là giải pháp hữu ích nhằm giảm thiểu ô nhiễm môi trường do chế biến tinh bột sắn gây ra. Trong nghiên cứu này, bã thải sắn (bao gồm vỏ, đầu mẩu sắn và bùn đất) được sử dụng làm nguồn thức ăn giun đất Châu Phi (African Nightcrawler (Eudrilus eugeniae) với các thí nghiệm như sau: Thí nghiệm 1: Giun quế được nuôi trong bã thải sắn nghiền ngay sau khi được loại bỏ; Thí nghiệm 2: giun đất được nuôi trong bã thải sắn nghiền đã được ủ với chế phẩm vi sinh phân hủy chất hữu cơ trong hai tuần trước đó; Thí nghiệm 3: Giun đất được nuôi trong bã thải sắn nghiền được để tự phân hủy tự nhiên trong hai tuần trước đó. Đối chứng là bã thải sắn để phân hủy tự nhiên trong 4 tuần. Bên cạnh đó, bã thải sắn nghiền còn được ủ bằng chế phẩm vi sinh phân hủy chất hữu cơ trong 4 tuần để cung cấp thêm số liệu so sánh giữa các thí nghiệm (Thí nghiệm 4). Các thí nghiệm được theo dõi trong 4 tuần. Kết quả cho thấy: Kết quả cho thấy: hàm lượng chất hữu cơ, axit humic và nitơ tổng trong mùn sắn hữu cơ thu được từ thí nghiệm đều tăng so với đối chứng: hàm lượng chất hữu cơ tổng số đạt từ 10,4% -15,7%, caohơn đối chứng (8,2%) so với 1,27-1,92 lần, hàm lượng axit humic đạt 0,6 - 0,8% và nitơ tổng số đạt 0,3%. Trong đó, thí nghiệm 3 có chất lượng mùn cao nhất (hàm lượng chất hữu cơ 15,7%, đạm tổng số 0,3%, axit humic 0,7% và axit fulvic 0,5%). Thí nghiệm 3 cũng có sinh khối giun quế cao nhất (3,6kg), tăng 30,5% so với thí nghiệm 1 và 19,4% so với thí nghiệm 2. Do đó, thí nghiệm 3 đã được đề xuất ứng dụng để xử lý phế thải sắn ở quy mô lớn hơn. Chất mùn hữu cơ thu được từ việc nuôi trùn quế bằng phế thải sắn có thể được sử dụng làm nguyên liệu để sản xuất phân trùn quế. Sinh khối trùn quế có thể dùng làm thức ăn giàu đạm cho vật nuôi (như gà, ba ba, lươn, cá ...) hoặc làm phân bón dinh dưỡng.

scholarly journals Aplikasi Beberapa Bahan Organik dan Lamanya Inkubasi Dalam Meningkatkan P-Tersedia Tanah Ultisol

2018 ◽  
Vol 1 (1) ◽  
pp. 110-117
Author(s):  
Nita Rentina Pasaribu ◽  
Fauzi Fauzi ◽  
Asmarlaili Sahar Hanafiah
Keyword(s):  
Organic Matter ◽  
Organic Matter Content ◽  
Nutrient Content ◽  
Matter Content ◽  
Low Fertility ◽  
Chicken Manure ◽  
Available P ◽  
Tithonia Diversifolia ◽  
Soil Physics ◽  
Dry Land

Ultisol merupakan bagian terluas dari lahan kering yang ada di Indonesia yaitu sekitar 25% dari total daratan Indonesia. Tanah yang mempunyai kesuburan rendah karena bereaksi masam, kandungan bahan organik rendah, kadar hara P rendah dan kelarutan Al yang tinggi. Penelitian ini bertujuan untuk mengetahui pengaruh pemberian beberapa bahan organik dan lamanya inkubasi terhadap peningkatan pH, P-tersedia, kapasitas tukar kation (KTK), penurunan Al-dd dan kejenuhan Al pada tanah Ultisol yang dilaksanakan di Laboratorium Fisika Tanah, Fakultas Pertanian, Universitas Sumatera Utara dan Laboratorium Socfin Indonesia, Medan. Penelitian ini menggunakan Rancangan Acak Lengkap Faktorial dengan 2 faktor dan 3 ulangan. Faktor pertama adalah bahan organik terdiri dari kontrol (B0), kompos Tithonia diversifolia (paitan) (B1), kompos kulit durian (B2), kompos TKKS (B3), pupuk kandang ayam (B4), kompos paitan + pukan ayam (B5), kompos kulit durian + pukan ayam (B6), kompos TKKS + pukan ayam (B7). Faktor kedua adalah lama inkubasi terdiri dari inkubasi satu minggu (I1), inkubasi dua minggu (I2). Hasil penelitian ini menunjukkan bahwa pemberian bahan organik nyata meningkatkan pH, P-tersedia, KTK serta menurunkan Al-dd dan kejenuhan Al. Lama inkubasi nyata menurunkan pH tetapi tidak mempengaruhi P-tersedia, KTK, menurunkan Al-dd dan kejenuhan Al, serta interaksi bahan oganik dengan lamanya inkubasi nyata menurunkan Al-dd tanah tetapi tidak mempengaruhi pH, P-tersedia, KTK, dan menurunkan kejenuhan Al. Ultisol is the widest part of dry land in Indonesia, which is around 25% of the total land area of Indonesia. This soil type has low fertility due to the acid reaction, low organic matter content, low P nutrient content and high Al solubility. This study aims to determine the effect of giving some organic matter and the length of incubation on increasing pH, available P, cation exchange capacity (CEC), decreasing Al-dd and saturation of Al on Ultisol soil carried out at the Soil Physics Laboratory, Faculty of Agriculture, University of Sumatra North and Indonesian Socfin Laboratory, Medan. This study used Factorial Completely Randomized Design with 2 factors and 3 replications. The first factor was organic material consisting of control (B0), Tithonia diversifolia (paitan) (B1) compost, durian skin compost (B2), OPEFB compost (B3), chicken manure (B4), paitan + chicken compost (B5) , durian + pukan chicken skin compost (B6), TKKS + chicken compost (B7) compost. The second factor is the incubation period consisting of one-week incubation (I1), two weeks incubation (I2). The results of this study indicate that the addition of organic matter significantly increases pH, available P, CEC and decreases Al-dd and saturation Al. Duration of incubation markedly reduced pH but did not affect P-available, CEC, decreased Al-dd and Al saturation, and interaction of organic matter with marked incubation duration significantly reduced soil Al-dd but did not affect pH, available P, CEC, and decreased Al saturation.

Extraction Methods Study and Structure Analysis of Humic Acid in Surface Soil along Main Transportation Road

2012 ◽  
Vol 518-523 ◽  
pp. 201-204
Author(s):  
Yue Jin Zhang ◽  
Juan Wang
Keyword(s):  
Organic Matter ◽  
Humic Acid ◽  
Surface Soil ◽  
Ph Value ◽  
Organic Matter Content ◽  
Extraction Methods ◽  
Matter Content ◽  
Soil Samples ◽  
Sorption Ability ◽  
Scanning Electron

The five surface soil samples were collected in along zhonghuan road of Jiaxing city. According to different solubility in acid and alkali solution, the soil organic matters were divided into different kinds of components such as fulvic acid, humic acid and Humin. Both humic acid and minerals were extracted by sequence and the images were displayed in assistance of scanning electron microscope. Different extraction time and extraction conditions were optimized and the methods were established in the last. Correlations between organic matter content, pH value and contents of HA were fitted and a linear relationship was found between OM and HA. On the help of SEM, different structure of HA and minerals were found that images of HA were columnar and that of mineral were Massive. It is just the reason that why the OM has great sorption ability than the minerals.

HEAVY METAL SPECIATION IN BOTTOM SEDIMENTS OF THE VYSHNEVOLOTSKY RESERVOIR

2018 ◽  
pp. 46-54
Author(s):  
O. A. Lipatnikova
Keyword(s):  
Heavy Metal ◽  
Organic Matter ◽  
Bottom Sediments ◽  
Metal Speciation ◽  
Organic Matter Content ◽  
Water Reservoir ◽  
Matter Content ◽  
Heavy Metal Speciation ◽  
Mobile Forms ◽  
Manganese Hydroxides

The study of heavy metal speciation in bottom sediments of the Vyshnevolotsky water reservoir is presented in this paper. Sequential selective procedure was used to determine the heavy metal speciation in bottom sediments and thermodynamic calculation — to determine ones in interstitial water. It has been shown that Mn are mainly presented in exchangeable and carbonate forms; for Fe, Zn, Pb и Co the forms are related to iron and manganese hydroxides is played an important role; and Cu and Ni are mainly associated with organic matter. In interstitial waters the main forms of heavy metal speciation are free ions for Zn, Ni, Co and Cd, carbonate complexes for Pb, fulvate complexes for Cu. Effects of particle size and organic matter content in sediments on distribution of mobile and potentially mobile forms of toxic elements have been revealed.

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