Inorganic Nutrients
Inorganic Nutrients - Related Videos
12:03
Two-Dimensional Visualization and Quantification of Labile, Inorganic Plant Nutrients and Contaminants in Soil
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Cited by 13 •
2020
This protocol presents a workflow for sub-mm 2D visualization of multiple labile inorganic nutrient and contaminant solute species using diffusive gradients in thin films (DGT) combined with mass spectrometry imaging. Solute sampling and high-resolution chemical analysis are described in detail for quantitative mapping of solutes in the rhizosphere of terrestrial plants.
10:20
Quantification of Heavy Metals and Other Inorganic Contaminants on the Productivity of Microalgae
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Cited by 14 •
2015
Integration of microalgal cultivation with industrial flue gas will ultimately introduce heavy metals and other inorganic compounds into the growth media. This study presents a procedure used to determine the end fate and impact of heavy metals and inorganic contaminants on the growth of Nannochloropsis salina grown in photobioreactors.
10:48
Nutrients in Aquatic Ecosystems
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2023
Source: Laboratories of Margaret Workman and Kimberly Frye - Depaul University Nitrogen and phosphorus are essential plant nutrients found in aquatic ecosystems and both are monitored as a part of water quality testing because in excess amounts they can cause significant water quality problems. Nitrogen in water is measured as the common form nitrate (NO3-) that is dissolved in water and readily absorbed by photosynthesizers such as algae. The common form of phosphorus measured is phosphate...
03:16
An Assay for the Quantification of Inorganic Polyphosphate in Bacteria
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2025
Source: Pokhrel, A., et al. Assaying for Inorganic Polyphosphate in Bacteria. J. Vis. Exp. (2019).This video demonstrates a colorimetric assay to measure inorganic polyphosphate (polyP) in bacterial samples. The procedure involves enzymatically converting polyP into free phosphate, which then reacts with molybdate and ascorbic acid to produce a blue-colored complex. By comparing the absorbance of this complex to a standard curve of known phosphate concentrations, the polyP content in bacterial...
09:13
Hydroponics: A Versatile System to Study Nutrient Allocation and Plant Responses to Nutrient Availability and Exposure to Toxic Elements
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Cited by 102 •
2016
Here, we present an easy-to-follow protocol to establish a successful hydroponic system for plant nutrition studies. This protocol has been extensively tested in Arabidopsis and can easily be adapted to other plant species to study specific nutritional requirements or the effect of non-essential elements on plant growth and development.
FAQs
Availability is not determined solely by the total amount present. Nitrogen, phosphorus, sulfur, potassium, calcium, and iron can occur in different chemical forms, while environmental conditions influence their dissolution, uptake, microbial transformation, and redox reactions. These processes determine whether a nutrient remains in soil or water, enters organisms, or shifts into sediments.
Microbial transformations change nutrients from one chemical form to another, while redox reactions influence their behavior under changing chemical conditions. Together, these processes affect nutrient movement among soil, water, organisms, and sediments. Their importance lies in controlling whether nutrients remain available for biological uptake or become redistributed within environmental compartments.
Rock weathering, atmospheric deposition, and decomposition provide major entry routes for inorganic nutrients. Weathering releases mineral elements from geological materials, deposition transfers nutrients from the atmosphere, and decomposition returns nutrients from organic matter to the environment. These inputs establish the nutrient supply that later participates in dissolution, uptake, transformation, and sediment exchange.
Investigations can follow nutrients across soil, water, organisms, and sediments while considering their sources and transformations. Researchers may examine contributions from rock weathering, atmospheric deposition, and decomposition, then evaluate how dissolution, uptake, microbial activity, and redox reactions redistribute them. This approach supports soil and water-quality assessment without treating nutrient presence as a single, static measurement.
Excessive nutrient inputs can disrupt normal ecosystem nutrient cycling and contribute to eutrophication, a form of nutrient pollution. Because nutrients support biological productivity, unusually high inputs can intensify nutrient availability in affected systems. Evaluating nutrient sources, chemical forms, and movement through soil, water, organisms, and sediments helps environmental scientists assess this pollution problem.
These studies are useful when managers need to evaluate soil condition, water quality, ecosystem productivity, or nutrient pollution. Tracking elements such as nitrogen, phosphorus, sulfur, potassium, calcium, and iron reveals how environmental conditions influence their availability and movement. The resulting information can support decisions about ecosystem management and the assessment of eutrophication risks.