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Related Concept Videos

Tonicity in Plants00:53

Tonicity in Plants

Tonicity describes the capacity of a cell to lose or gain water. It depends on the quantity of solute that does not penetrate the membrane. Tonicity delimits the magnitude and direction of osmosis and results in three possible scenarios that alter the volume of a cell: hypertonicity, hypotonicity, and isotonicity. Due to differences in structure and physiology, tonicity of plant cells is different from that of animal cells in some scenarios.Plants and Hypotonic EnvironmentsUnlike animal cells,...
Key Elements for Plant Nutrition02:35

Key Elements for Plant Nutrition

Like all living organisms, plants require organic and inorganic nutrients to survive, reproduce, grow and maintain homeostasis. To identify nutrients that are essential for plant functioning, researchers have leveraged a technique called hydroponics. In hydroponic culture systems, plants are grown—without soil—in water-based solutions containing nutrients. At least 17 nutrients have been identified as essential elements required by plants. Plants acquire these elements from the atmosphere, the...

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Updated: Jun 24, 2026

Hydroponics: A Versatile System to Study Nutrient Allocation and Plant Responses to Nutrient Availability and Exposure to Toxic Elements
09:13

Hydroponics: A Versatile System to Study Nutrient Allocation and Plant Responses to Nutrient Availability and Exposure to Toxic Elements

Published on: July 13, 2016

[Cadmium, lead, and zinc-content of fruits and vegetables from gardens in industrial region (author's transl)].

K Pfeilsticker, C Markard

    Zeitschrift Fur Lebensmittel-Untersuchung Und -Forschung
    |July 18, 1975
    PubMed
    Summary
    This summary is machine-generated.

    Heavy metals cadmium, lead, and zinc were analyzed in Dortmund produce. Some fruit and vegetable samples exceeded proposed limits for these toxic metals.

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    Two-Dimensional Visualization and Quantification of Labile, Inorganic Plant Nutrients and Contaminants in Soil
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    Two-Dimensional Visualization and Quantification of Labile, Inorganic Plant Nutrients and Contaminants in Soil

    Published on: September 1, 2020

    Area of Science:

    • Environmental Science
    • Analytical Chemistry
    • Food Safety

    Context:

    • Analysis of heavy metal contamination in produce is crucial for public health.
    • Agricultural soils can accumulate toxic metals from various sources.
    • Monitoring food supplies ensures compliance with safety regulations.

    Purpose:

    • To quantify cadmium, lead, and zinc levels in Dortmund-sourced fruits and vegetables from the 1973 harvest.
    • To assess the extent of heavy metal contamination exceeding established safety thresholds.

    Summary:

    • Mineralization, APDC/MIBK extraction, and Atomic Absorption Spectroscopy (AAS) were used to analyze 136 fruit and vegetable samples.
    • Results indicated that 5% of samples exceeded proposed limits for cadmium.
    • Furthermore, 13% of samples surpassed proposed limits for lead and zinc.

    Impact:

    • Highlights potential risks associated with heavy metal accumulation in locally grown produce.
    • Informs regulatory bodies and consumers about food safety in the Dortmund region.
    • Provides historical data on heavy metal contamination for comparative environmental studies.