Water toxicity diagnostic kit using turions isolated from duckweed

On-site Water Toxicity Diagnostic Kit Based on Dormant Turion Germination Response

This technology is a water toxicity diagnostic kit that integrates dormant turions isolated from duckweed, a culture vessel, water pollutant samples, and culture medium. It determines the level of toxicity by measuring the root length or frond area formed by the germination of the turions in the water being tested.

Physicochemical analysis used to assess the risks of heavy metals, volatile organic compounds, and domestic sewage entering rivers and lakes is time-consuming, difficult to perform without knowing the specific components of the pollutants, and prone to changes in composition and concentration during sample transport. Tests using animal indicator species also have limitations, requiring specialized personnel and expensive equipment.

This technology provides standard pollutant samples such as copper sulfate, silver nitrate, ammonia, soapy water, and saltwater, along with stock culture medium and pH test strips, allowing even non-experts to conduct control tests and determine toxicity in about three days. It can be used for monitoring river and lake water quality, pre-discharge industrial wastewater checks, and environmental education, enabling low-cost, immediate on-site ecological toxicity testing.

‍

‍

Key Features:

• A water toxicity diagnostic kit comprising dormant turions isolated from duckweed, a culture vessel, water pollutant samples, and a culture medium for the turions
• A configuration that uses the root length or frond area of duckweed formed by turion germination as a parameter for evaluating water toxicity
• A configuration where water pollutant samples are prepared using one or more of copper sulfate solution, silver nitrate solution, ammonia, soapy water, or saltwater
• A configuration that further includes a test tube fixing device when using test tubes as culture vessels and provides pH test strips as accessories

‍

This invention was developed through the Ministry of Trade, Industry and Energy's project for the development of standard technologies for aquatic ecological risk bio-diagnosis and support for international certification.

‍