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Related Concept Videos

Qualitative Analysis03:46

Qualitative Analysis

For solutions containing mixtures of different cations, the identity of each cation can be determined by qualitative analysis. This technique involves a series of selective precipitations with different chemical reagents, each reaction producing a characteristic precipitate for a specific group of cations. Metal ions within a group are further separated by varying the pH, heating the mixture to redissolve a precipitate, or adding other reagents to form complex ions.
For instance, group IV...
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Feedback Regulation of Calcium Concentration

Calcium is an essential signaling molecule required for various cellular functions. Calcium pumps and ion channels on cell and organellar membranes, such as those on the endoplasmic reticulum (ER), regulate calcium concentrations inside the cell. They remain closed, keeping the cytosolic calcium levels low at a resting state.
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When atoms gain or lose electrons to achieve a more stable electron configuration they form ions. Ionic bonds are electrostatic attractions between ions with opposite charges. Ionic compounds are rigid and brittle when solid and may dissociate into their constituent ions in water. Covalent compounds, by contrast, remain intact unless a chemical reaction breaks them.Opposing Charges Hold Ions Together in Ionic CompoundsIonic bonds are reversible electrostatic interactions between ions with...
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Anticholinesterases, also known as cholinesterase inhibitors, work by blocking the breakdown of acetylcholine, leading to its accumulation in the synaptic cleft. This accumulation indirectly enhances both muscarinic and nicotinic actions. These agents are classified as reversible or irreversible based on their mechanism of action.     
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Compared with pure water, the solubility of an ionic compound is less in aqueous solutions containing a common ion (one also produced by dissolution of the ionic compound). This is an example of a phenomenon known as the common ion effect, which is a consequence of the law of mass action that may be explained using Le Chȃtelier’s principle. Consider the dissolution of silver iodide:

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Staining the Cytoplasmic Ca2+ with Fluo-4/AM in Apple Pulp
08:05

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Published on: November 6, 2021

Liquid calcium fertilizer intoxication.

Ji Hye Kim1, Hyun Min Jung, Jun Sig Kim

  • 1Department of Emergency Medicine, College of Medicine, Inha University, Jung-gu, Incheon, South Korea.

Clinical Toxicology (Philadelphia, Pa.)
|June 10, 2010
PubMed
Summary
This summary is machine-generated.

Liquid calcium fertilizer ingestion can cause life-threatening hypercalcemia. Prompt medical intervention, similar to other hypercalcemia causes, is crucial for recovery.

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Area of Science:

  • Toxicology
  • Clinical Medicine

Background:

  • Liquid calcium fertilizer is commonly used in agriculture for fruit and vegetable cultivation.
  • Accidental or intentional ingestion of large quantities poses a significant health risk.

Observation:

  • A case report details a patient experiencing acute intoxication from liquid calcium fertilizer.
  • Symptoms included dyspnea (shortness of breath) and drowsiness, indicative of severe hypercalcemia.

Findings:

  • The patient recovered following interventions typically used for hypercalcemia management.
  • This case highlights that liquid calcium fertilizer can be a direct cause of acute hypercalcemia.

Implications:

  • Hypercalcemia, regardless of cause, can lead to serious complications like cardiac arrhythmias and altered mental status.
  • Hospitalization and tailored treatment are essential, based on hypercalcemia severity and underlying etiology.