植物组织中水分，灰分，挥发分检测方案(热重分析仪)

LECO Corporation| 3000 Lakeview Avenue| St. Joseph， Ml 49085| Phone：800-292-6141|269-985-5496info@leco.com·www.leco.com|ISO-9001：2015 Q-994 | LECO is a registered trademark of LECO Corporation.LCRM = LECO Certified Reference Material； LRM=LECO Reference Material and are registered trademarks of LECO Corporation.Form No. 203-821-6231/21-REVOC 2021 LECO Corporation Application Note Instrument： TGA801 Determination of Moisture， Volatile， and Ash in Biomass/Plant TissueLECO Corporation； Saint Joseph， Michigan USA Introduction Moisture， volatile matter， and ash are importantconstituents for the quality characterization of fuelmaterials. Moisture， as determined by this instrument， isused for calculating analytical results of the fuel to a drybasis. Volatile matter is a primary constituent of solidfuels used in assessing the combustion characteristics.Ash determination is typically used to calculate ashyields for the fuel and other calculations involving thematerial balance for ash handling and disposalrequirements for the fuel utilization. Thermogravimetric analysis (TGA) is an analyticaltechnique in which changes in sample mass， due tochanges in physical and chemical properties ofmaterials， are measured as a function of temperatureand/or time. TGA is commonly used to determineselected characteristics of materials that exhibit eithermass loss or gain， due to decomposition， oxidation， orloss of volatile materials such as moisture. The LECO° TGA801 is a macro thermogravimetricanalyzer designed to determine moisture， volatile andash content of materials by measuring the change inmass of the sample as a function of the oventemperature while controlling the atmosphere andventilation rate. The TGA801 allows up to 19 samples tobe analyzed simultaneously. Sample Preparation Samples must be of a uniform consistency to producesuitable results. Typically， samples should be ground to afineness of <1.0 mm. Accessories 621-331 Ceramic Crucibles， 529-048 Ceramic Covers，621-011-507 Double Ended Scoop. Sample Mass ~1.0g Analysis Time ~4 hours General Method Parameters Sample Batch* Initial Mass (g) Moisture% Volatile Dry % Ash Dry % Alfalfa 1 1.0042 6.58 74.7 10.4 n= 10 1 1.0057 6.57 74.3 10.5 1 1.0143 6.54 74.1 10.5 1 1.0201 6.54 74.3 10.5 1 1.0434 6.49 74.4 10.5 2 1.0032 6.54 74.4 10.5 2 1.0126 6.55 74.3 10.5 2 1.0033 6.59 74.2 10.5 2 1.0218 6.50 74.2 10.5 2 1.0034 6.54 74.3 10.5 Avg = 6.54 74.3 10.5 S = 0.03 0.2 <0.1 Biomass 1 1.0270 5.75 81.0 0.47 n =10 1 1.0216 5.73 81.0 0.53 1 1.0137 5.70 80.9 0.55 1 1.0128 5.76 81.0 0.54 1 1.0490 5.70 80.8 0.55 2 1.0112 5.78 80.7 0.47 2 1.0148 5.75 80.9 0.40 2 1.0216 5.78 80.6 0.47 2 1.0276 5.75 80.8 0.46 2 1.0142 5.77 80.9 0.49 Avg= 5.75 80.9 0.49 S = 0.03 0.1 0.05 *Batch 1 and Batch 2 were analyzed separately utilizing a Dual Furnace TGA801. Note： LECO recommends that a calibration of y=1x+0 be used for volatile matter determination in biomass. 利用力可LECO TGA801热重分析仪分析植物组织中水分挥发分和灰分，结果如下：