Carbon Nitrogen Ratio
Carbon Nitrogen Ratio - Related Videos
10:41
Carbon and Nitrogen Analysis of Environmental Samples
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2023
Source: Laboratories of Margaret Workman and Kimberly Frye - Depaul University Elemental Analysis is a method used to determine elemental composition of a material. In environmental samples such as soils, scientists are particularly interested in the amounts of two ecologically important elements, nitrogen and carbon. Elemental analysis by the flash combustion technique works by oxidizing the sample with a catalyst through combustion in a high-temperature chamber. The products of combustion are...
07:11
Biofilm Removal Using Carbon Dioxide Aerosols without Nitrogen Purge
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Cited by 2 •
2016
Biofilms on surfaces can be effectively and rapidly removed by using a periodic jet of carbon dioxide aerosols without a nitrogen purge.
11:58
Synthesis and Functionalization of Nitrogen-doped Carbon Nanotube Cups with Gold Nanoparticles as Cork Stoppers
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Cited by 10 •
2013
We discussed the synthesis of individual graphitic nanocups using a series of techniques including chemical vapor deposition, acid oxidation and probe-tip sonication. By citrate reduction of HAuCl4, the graphitic nanocups were effectively corked with gold nanoparticles due to the chemically reactive edges of the cups.
01:49
The Nitrogen Cycle
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2019
Nitrogen atoms, present in all proteins and DNA, are recycled between abiotic and biotic components of the ecosystem. However, the primary form of nitrogen on Earth is nitrogen gas, which cannot be used by most animals and plants. Thus, nitrogen gas must first be converted into a usable form by nitrogen-fixing bacteria before it can be cycled through other living organisms. The use of nitrogen-containing fertilizers and animal waste products in human agriculture has greatly influenced the...
10:44
Preparation of Biomass-based Mesoporous Carbon with Higher Nitrogen-/Oxygen-chelating Adsorption for Cu(II) Through Microwave Pre-Pyrolysis
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2019
Here, we present a protocol to synthesize nitrogen/oxygen dual-doped mesoporous carbon from biomass by chemical activation in different pyrolysis modes followed by modification. We demonstrate that the microwave pyrolysis benefits the subsequent modification process to simultaneously introduce more nitrogen and oxygen functional groups on the carbon.
FAQs
Microorganisms need carbon primarily as an energy source and nitrogen to construct proteins and other cellular components. When the available supply of these elements supports both needs, microbial growth and decomposition can proceed effectively. A less favorable balance changes microbial activity and affects how quickly nutrients move through decomposing biological material.
The ratio reflects how much nitrogen decomposers may need while processing carbon-rich material. If microbial growth requires more nitrogen than the material readily supplies, microorganisms can immobilize nitrogen in their cells, reducing its immediate availability. Under other conditions, decomposition can release nitrogen, making it more available within the surrounding biological system.
C:N ratio measurements connect the composition of organic material with microbial activity and nitrogen availability in soil. Because microorganisms use nitrogen for cellular growth, their processing of carbon-containing material can influence whether plants encounter available nitrogen or whether microbes retain it. This makes the ratio useful for interpreting soil fertility and plant nutrient uptake.
Researchers can measure the ratio in plant litter, compost, soils, and biomass. Comparing these materials helps relate their nutrient composition to different biological settings, including decomposition, soil processes, and microbial activity. The selected material should match the research question, such as evaluating organic matter breakdown, nutrient availability, agricultural conditions, or broader ecosystem cycling.
Measuring C:N ratio in litter, compost, soil, or biomass gives researchers a way to connect material composition with decomposition behavior. The measurement helps interpret microbial growth, nitrogen immobilization, and nitrogen release during breakdown. As a result, it supports studies of how organic materials contribute to nutrient cycling and changing soil conditions.
In agriculture, C:N measurements support investigation of soil fertility, microbial activity, and plant nutrient uptake. In ecology, they help researchers examine decomposition and ecosystem nutrient cycling. The same measurements also contribute to carbon-storage research by relating carbon-containing biological materials to the processes that transform and cycle nutrients through ecosystems.