scholarly journals EMISI METHANA (CH4) DARI SALURAN DRAINASE LAHAN GAMBUT DI KALIMANTAN TENGAH

Agric ◽  
2017 ◽  
Vol 28 (1) ◽  
pp. 25
Author(s):  
Eni Yulianingsih
Keyword(s):  
Ghg Emissions ◽  
Channel Width ◽  
Rubber Plantation ◽  
Drainage Channel ◽  
Environmental Aspects ◽  
Flame Ionization ◽  
Peatland Development ◽  
Drainage Channels ◽  
Drainage Canals

<p>ABSTRACT</p><p>Peatland development is increasingly becoming a strategic, both in terms of aspects of agronomy, and environmental aspects. Information magnitude of GHG emissions from drainage canals are important in the management of peat sustainability. Its objective is to determine the amount of GHG emissions from peatland drainage channels that are used for traditional rubber plantation. Gas sampling is done in the secondary drainage channel with a channel width of 5 m and 3 m wide tertiary. Sampling was performed six times with five points by using the lid closed cylinder. Sample was analyzed by gas chromatography flame ionization detector incorporates detector (FID) for the determination of the concentration of CH4. CH4 fluxes in peatland drainage channel width of 5 m is relatively higher than in the drainage channel width of 3 m in Jabiren peatlands of Central Kalimantan. GHG emissions in the channel width of 5 m was 542,20 ± 258,57 kg CO2-e yr-1 and 379,14 ± 260,7 kg CO2-e yr-1 of the channel width of 3 m.</p>

scholarly journals THE ESTIMATION OF PEATLANDS RESERVE ON CARBON IN THE FOREST AND SHRUBS THAT HAS BEEN DRAINED

2016 ◽  
Vol 1 (1) ◽  
pp. 56-63
Author(s):  
Siti Fatimah Batubara ◽  
Fahmuddin Agus
Keyword(s):  
Ground Water ◽  
Water Level ◽  
Co2 Emissions ◽  
Peat Soil ◽  
Ghg Emissions ◽  
Carbon Stocks ◽  
Drainage Channel ◽  
Soil Subsidence ◽  
Drainage Channels ◽  
Life On Earth

Global warming and greenhouse gas emissions (GHGs) became a hot issue in the world today. An increased concentration of carbon in the atmosphere becomes one of the serious problems that can affect life on Earth. Peatlands pointed out as one of the sources of GHG emissions. Drainage of peatlands cause decreased water level so that the decomposition process is faster on a layer above the groundwater table, thus affecting the chemical characteristics of peat. In addition to affecting the ground water level, drainage also leads to a decrease in surface height peat soil (subsidence). Given the magnitude of the role of drainage and land use types in affecting carbon stocks and emissions of CO2 on peat soil, this study is to measure carbon stocks and emissions of CO2 on peat soil in forests and shrubs that have been drained. CO2 emissions increase with the closer spacing of the drainage channel that is at a distance of 50 m to 500 m of drainage channels. Meanwhile, at a distance of 5 m and 10 m of the drainage channel can not be concluded because of the condition of ground water that is stagnant at the time of sampling gas, so be very low CO2 emissions. CO2 emissions on the use of forest land are higher than the shrub land.

ANALISA DIMENSI SALURAN DRAINASE UNTUK MENGATASI BANJIR DI JALAN BAY SALIM SEKIP JAYA KECAMATAN KEMUNING PALEMBANG

2020 ◽  
Vol 6 (3) ◽  
Author(s):  
Zainul Bahri ◽  
Mira Setiawati ◽  
M Rifki Alatif
Keyword(s):  
Cross Section ◽  
Drainage Channel ◽  
High Rainfall ◽  
Maximum Discharge ◽  
Sediment Deposits ◽  
Long Duration ◽  
Rectangular Channels ◽  
Drainage Channels ◽  
Drainage Canals

Floods that occurred in Jalan Bay Salim, Sekip Jaya Village, Kemuning District, Palembang were caused by high rainfall with a long duration, inadequate drainage canals filled with rubbish, sediment deposits that were thick enough and cross section of drainage channels that could no longer hold water in large quantities so that there is an overflow of water from the drainage channel.The dimensions of the drainage channel in Jalan Bay Salim Sekip Jaya, Kemuning District in Palembang, there can be two rectangular channels, as follows: First channel: H = 1 m, b = 2 m, y = 0.61 m, p = 200 m, by being able to accommodate discharge: 1,376 m3 / sec, with maximum discharge: 0,365 m3 / sec, second channel: H = 0.6, b = 0.5m, y = 0.3m, p = 200m, by being able to accommodate discharge: 0,7584 m3 / sec, with maximum discharge: 0,779 m3 / sec. So from the observation only the first channel can accommodate maximum flowrate.Based on the results of the analysis that the second channel is no longer able to accommodate the maximum discharge, therefore in order to accommodate the maximum discharge it is necessary to analyze the dimensions of the channel that can accommodate the maximum discharge by normalizing by changing the dimensions of the channel as follows: second channel: H = 0.6, b = 1 m, y = 0.5 m, p = 200 m, so it can hold the discharge: 2,075m3 / sec, with a maximum discharge of 0,779 m3 / sec.

Flame ionization detector response to coeluting hydrocarbons and carbon disulphide and its application to the determination of the sum of C6-C11 alkanes and cycloalkanes in air

1983 ◽  
Vol 48 (3) ◽  
pp. 722-734
Author(s):  
Martin Koval
Keyword(s):  
Carbon Disulphide ◽  
Internal Standard ◽  
Calibration Procedure ◽  
Detector Response ◽  
Column Temperature ◽  
Flame Ionization ◽  
Other Substances ◽  
Flame Ionisation Detector ◽  
Ionisation Detector

The flame ionisation detector response to C6-C11 aliphatic hydrocarbon solutions in carbon disulphide in the concentration range between 1.3-9.5 mg ml-1 retained lineary despite the excess of solvent entering the detector simultaneously with the analyte. Pure carbon disulphide exhibited a small positive detector response which did not interfere in calibration procedure and which, under certain GC conditions, inverted to negative values. This response was not proportional to the injected volume and was strongly influenced by the column temperature and/or bleed. On the basis of these findings, a method compatible with the widely used charcoal tube carbon disulphide desorption procedure was developed and evaluated. It consists of static desorption of the sum of aliphatic alkanes and cycloalkanes from the activated charcoal after which an internal standard is added to the supernatant eluate. The resulting carbon disulphide solution is analysed on a highly polar stationary phase 1,2,3-tris(2-cyanoethoxy)propane where the solvent and the analyte coelute in a single peak, the height of which is practically proportional to the sum of alkanes and cycloalkanes present. This also makes determinations of other substances present in the sample more simple. The field test of the proposed method yielded values comparable in precision and accuracy with a control infrared spectrophotometric method.

Improved Cleanup and Derivatization for Gas Chromatographic Determination of Monosodium Glutamate in Foods

1983 ◽  
Vol 66 (6) ◽  
pp. 1528-1531 ◽  
Author(s):  
Hiroshi Nakanishi
Keyword(s):  
Glutamic Acid ◽  
Acid Derivative ◽  
Monosodium Glutamate ◽  
Chromatographic Determination ◽  
Flame Ionization Detection ◽  
Gas Chromatograph ◽  
Flame Ionization ◽  
Acetone Water ◽  
Chromatographic Procedure

Abstract A gas chromatographic procedure is described for determining monosodium glutamate (MSG) in several types of food. A sample is extracted with acetone- water (1 + 1). Acetone is evaporated and an aliquot of the extract is buffered with 1M NH4OH-1M NH4CI pH 9 solution, and chromatographed directly on a column of QAE Sephadex A-25 that has been pretreated with the same buffer. MSG is eluted with 0.1N HC1, and a portion of the eluate is evaporated to dryness and reacted with dimethylformamide( DMF)-dimethylacetal to form the glutamic acid derivative, which is injected into a gas chromatograph and measured by flame ionization detection. Recoveries of MSG from sample fortified at 5-500 mg ranged from 92.8 to 100%.

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