Calculate the percentage of acid-insoluble ash on the dried drug basis. Method D Place the ash (Method A or B), or the sulphated ash, as directed in the individual monograph, in a crucible, add 15 ml of water and 10 ml of hydrochloric acid, cover with a watch glass, boil for 10 minutes, and allow to cool.READ MORE
ADVERTISEMENTS: In this article we will discuss about the tests for the detection of alkaloids in plants with the help of experiment. The alkaloids are a group of basic, secondary plant substance, which usually possess a N-containing hetero-cycle. Their basic character is due to this feature. The alkaloids are mostly colourless, crystalline and non-volatile solids. […]READ MORE
Wet Ashing – This technique of determining ash content in a food sample is comparatively faster than other techniques. The time period may range from 10 minutes to few hours. In this process, the temperature range is set at 350°C. The difference in weight before and after the test is the percentage of ash content.READ MORE
Ash is the inorganic solid residue left after the fuel is completely burned. Its primary ingredients are silica, aluminum, iron, and calcium; small amounts of magnesium, titanium, sodium, and potassium may also be present. Ash content is determined by ASTM test protocol D-1102 for wood, E-1755-01 for other biomass, and D-3174 for coal.READ MORE
Table 1. Waste Composition Component Wet Weight, lb Percent MC Food Waste 8 70 Paper 28 6.1 Cardboard 8 5 Plastics 9 4.4 Textiles 1 10 Rubber 0.8 0READ MORE
· This test is performed to determine the organic content of soils. The organic content is the ratio, expressed as a percentage, of the mass of organic matter in a given mass of soil to the mass of the dry soil solids. Standard Reference: ASTM D 2974 – Standard Test Methods for Moisture, Ash, and Organic Matter of Peat and Organic Soils ...READ MORE
· Ash content in crude oil is an indication of the amount of its metallic constituents. The ash left after completely burning an oil sample usually consists of stable metallic salts, metal oxides, and silicon oxide. The determination of ash content can …READ MORE
This method is used to determine ash content in feedstuffs by calcination. Ash is considered as the total mineral or inorganic content of the sample. Material and equipment. Porcelain crucibles. Crucible furnace. Dryer. Method. Place 2.5 to 5 g of dry sample in a …READ MORE
The fixed carbon content of the coal is the carbon found in the material which is left after volatile materials are driven off. This differs from the ultimate carbon content of the coal because some carbon is lost in hydrocarbons with the volatiles Calorific value, measured in Btu is the amount of chemical energy stored in a coal that is ...READ MORE
· Moisture content influences the taste, texture, weight, appearance, and shelf life of foodstuffs. Even a slight deviation from a defined standard can adversely impact the physical properties of a food material. For example, substances which are too dry could affect the consistency of the end product. Conversely, excess moisture may cause food ...READ MORE
· NIR is the commonly used term for Near InfraRed spectroscopy, an analysis technique which has been used in the food and agricultural industries since the late 1970s. Over the years it has become very widely adopted worldwide, as it offers signification …READ MORE
In molecular biology and genetics, GC-content (or guanine-cytosine content) is the percentage of nitrogenous bases in a DNA or RNA molecule that are either guanine (G) or cytosine (C). This measure indicates the proportion of G and C bases out of an implied four total bases, also including adenine and thymine in DNA and adenine and uracil in RNA.. GC-content may be given for a certain fragment ...READ MORE
Determination of acid-insoluble ash. Boil the total ash obtained as the above procedure for 5 minutes and mix 25 ml of dilute hydrochloric acid. Filter and collect the insoluble matter on a ashless filter paper, after that wash the filter paper with hot water, ignite in tared crucible, cool and keep in desiccator.READ MORE
determination of a few elements, we''ll also investigate some of these practical concerns during the experiment. An obvious (if somewhat simplistic) application of the determination of calcium and magnesium in water is testing for hard water. Water hardness is defined as the total concentration of alkaline earth metal ions in water.READ MORE
· "Soil acidity" is the term used to express the quantity of hydrogen (H) and aluminum (Al) cations (positively charged ions) in soils. When levels of hydrogen or aluminum become too high—and the soil becomes too acid—the soil''s negatively charged cation exchange capacity (CEC) becomes "clogged" with the positively charged hydrogen and aluminum, and the nutrients needed for plant ...READ MORE
The titration involved in the determination of the carbonate content is an example of a weak base being titrated with a strong acid. The two weak bases involved are C O 3 2 − with K b 1 = 2.1 × 10 4 and H C O 3 − with K b 2 = 2.4 × 10 − 8. The reactions involved are: (1) …READ MORE
To find out the correlation between the ash content in grass plant biomass and N fertiliser, a correlation analysis was carried out (fig. 2, fig. 3, and fig. 4). In the case of fig. 2 there is a close, negative linear correlation (r = -0.84, p < 0.05) between the timothy biomass ash content and N amount in ...READ MORE
the fly ash as the sole cementing material (Cross 2005). In addition to providing an indication of the mineralogy and reactivity of the fly ash, the calcium content is also useful in predicting how effective the fly ash will be in terms of reducing the heat of hydration (Thomas 1995), controlling expansion due to alkali-silica reaction (ShehataREAD MORE
Residue created from lime-soda ash softening is normally very high in calcium carbonate or a mixture of calcium carbonate, and magnesium hydroxide. Calcium carbonate sludges are normally dense, stable inert, and dewater readily. Solids content in the sludge range from 5 …READ MORE
· Moisture content has been established as an important indicator of shelf life for foods. Moisture can determine the aesthetics of food, giving estimates to product shelf life regardless of sample properties in a wet or dry state. Ash content also is essential to a food''s nutrition and longevity.READ MORE
Determination of Ash Values: 1. Total ash: Take about 2 or 3 g, accurately weighed, of the ground drug in a tarred platinum or silica dish previously ignited and weighed. Scatter the ground drug in a fine even layer on the bottom of the dish. Incarnated by gradually increasing the heat-not exceeding dull red heat- until free from carbon, cool ...READ MORE
· ASH VALUES AND EXTRACTIVES<br />The residue remaining after incineration is the ash content of drug<br />Total ash method is used to measure the total amount of material remaining after incineration<br />Acid insoluble ash is the residue obtained after boiling the total ash with dil. HCl and igniting the remaining insoluble matter.<br />Water ...READ MORE
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Ash Content The ash value is related to the inorganic material in the fuel oil. The ash levels of distillate fuels are negligible. Residual fuels have more of the ash-forming constituents. These salts may be compounds of sodium, vanadium, calcium, magnesium, silicon, iron, aluminum, nickel, etc. Typically, the ash value is in the range 0.03–0 ...READ MORE
A crucible can be used to determine the percentage of ash contained in an otherwise burnable sample of material such as coal, wood, oil, rubber or plastics. The ISO mandates ash content determination for most foodstuffs. Examples include ISO 2171: Cereals, pulses and by-products — Determination of ash yield by incineration;READ MORE
5. Return the sample to the oven and dry for several hours, and determine the weight of (dry soil +tare). 6. Repeat step 5 until there is no difference between any two consecutive measurements of the weight of (dry soil+tare). Computations The moisture content in dry weight basis may be calculated using the following formula:READ MORE
· In a thermal power plant, to complete the cyclic operation, we need to send water again to the economizer at high pressure. Steam exhausted from LP turbine is not in condensed form and it is not economical to compress the steam at a very high pressure around 150 Kg/cm2. So a device is needed which can condense the steam into water.READ MORE
· As NDF content of a feed increases, dry matter intake will decrease and chewing activity will increase. Within a given feed, NDF is a good measure of feed quality and plant maturity. For legume forages, NDF content below 40% would be considered good quality, while above 50% would be considered poor.READ MORE
the wastewater treatment plant. When people visit a treatment plant for the first time, often it is not what they perceived it would be. These wastewater plants are complex facilities and provide a high quality end product. Why treat wastewater? We need to remove the wastewater pollutants to protect the environment and protect public health.READ MORE
Identification. Ash refers to any inorganic material, such as minerals, present in food. It''s called ash because it''s residue that remains after heating removes water and organic material such as fat and protein. Food scientists "ash" foods so that they can examine this leftover material to better determine a food''s content.READ MORE
Dipak K. Sarkar, in Thermal Power Plant, 2015 Ash. Ash content represents the incombustible component remaining after a sample of the furnace oil is completely burned. The ash content of petroleum products is generally low. Typically, the ash value is in the range of 0.03 –0.07% by weight, although in certain oils higher ash content may be found. Ash consists of extraneous solids, residues ...READ MORE
Ash is not digestible by animals. High ash content of feeds may dilute the amount of nutrients available to the animal. Bone con tent of feeds of animal origin can contribute to ash content. If a plant feed is high in ash content, it may be due to soil contamination during harvest of the plant material.READ MORE
· Objective: To determine the ash content of food samples. Ash content represents the inorganic residue (minerals) remaining after ignition and complete oxidation of organic matter. Dry ashing involves heating the sample in a muffle furnace at 500 – 600 o C. Since some elements such as Fe, Se, Pb and Hg may be partially volatized during dry ashing, wet ashing can also be done using acids or ...READ MORE
Calculate the moisture content of the soil by subtracting the weight of the dry soil from the weight of the moist soil, and then dividing by the weight of the dry soil. Although the measurement is simple, it is important to determine soil moisture content in order to better understand soil characteristics.READ MORE
End of 2015, DENR will divide coal ash sites into high, intermediate, and low risk categories. High risk sites must be excavated and placed in a lined landfill by the end of 2019 . Intermediate sites by 2024. Fly ash must be converted to dry – End of 2018. Bottom ash Dry – End of 2019READ MORE
Determining Volatile Matter and Ash in Biomass/Plant Tissue. Volatile matter, ash, and moisture are important components used for the quality characterization of fuel materials. Volatile matter, a key component of solid fuels, is used to measure the combustion characteristics. The ash determination is a simple method used to measure ash …READ MORE
been negatively related to ash content, with every 1% increase in ash concentration decreasing the heating value by 0.2 MJ kg-1 . More than this, ashes and inorganic elements (e.g. alkali) realised during the combustion may cause a number of serious problems to the power plants, such as slagging, corrosion and fouling.READ MORE
The sulfated ash test uses a procedure to measure the amount of residual substance not volatilized from a sample when the sample is ignited in the presence of sulfuric acid. The test is usually used for determining the content of inorganic impurities in an organic substance. Unless otherwise indicated in the individual monograph, use Method A ...READ MORE
Leaf spot diseases weaken trees and shrubs by interrupting photosynthesis. Most leaf spot diseases affect only a small percentage of the tree''s overall leaf area, and are a minor stress on the health of the tree. Leaf spot diseases should be taken seriously if they result in moderate to complete leaf loss two to four years in a row.READ MORE
Acknowledgements NCHRP Report 749 Methods for Evaluating Fly Ash for Use in Highway Concrete Larry Sutter 1, Doug Hooton 2, Scott Schlorholtz 3 Zeyad Ahmed 1, Melanie Keuber Watkins, Dave Hand 1,Andre de Groot 2 1 Michigan Technological University 2 University of Toronto 3 …READ MORE
Ash Content analysis of plastics ASTM D2584, ASTM D5630, ISO 3451. An Ash test is used to determine if a material is filled. The test will identify the total filler content. It cannot identify individual percentages in multi-filled materials without additional test procedures being performed. An ash test cannot be used to determine the percent ...READ MORE
Boil the ash for 5 minutes with 25 mL of hydrochloric acid (~70 g/l) TS; collect the insoluble matter in a sintered crucible, or on an ashless filter-paper, wash with hot water, and ignite at about 500 °C to constant weight. Calculate the content in mg of acid-insoluble ash per g of air-dried material. 4.1 Determination of ash and acid ...READ MORE
4. Analysis of Ash and Minerals . 4.1 Introduction. The "ash content" is a measure of the total amount of minerals present within a food, whereas the "mineral content" is a measure of the amount of specific inorganic components present within a food, such as Ca, Na, K and Cl termination of the ash and mineral content of foods is important for a number of reasons:READ MORE
Growing Media. The production of greenhouse crops involves a number of cultural inputs. Among these, perhaps the most important is the type of growing medium used. Due to the relatively shallow depth and limited volume of a container, growing media must be amended to provide the appropriate physical and chemical properties necessary for plant ...READ MORE
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