1、 System Introduction:

Luminescent bacterial toxicity test is one of the important comprehensive toxicity detection methods for water quality, which can accurately and truly reflect the comprehensive toxic effects of pollutants on the water environment. The new water quality comprehensive toxicity online monitoring instrument uses luminescent bacteria as the test organism and adopts flow analysis technology to quickly respond to pollutants in the water. Luminescent bacteria can be cultured continuously for one month, extending the maintenance period. The instrument can be applied to the measurement of various water bodies and has high sensitivity to heavy metals, insecticides, disinfectants, herbicides, industrial chemicals, etc. Shanghai Yizhan Environmental Protection Technology Co., Ltd. combines biotoxicity intelligent software to provide early warning for incidents such as sudden water pollution or human poisoning in drinking water sources.

Acute toxicity of water quality (comprehensive toxicity of water quality) uses special luminescent bacteria to directly detect the toxicity of samples, which can monitor the pollution of thousands of toxins. DeltaTox ® The luminescent bacteria used for detecting acute toxicity are Vibrio fischeri, also known as Vibrio fischeri NRRL B-11177. Understanding the characteristics of this Vibrio species can provide a better understanding of the analysis principles of acute (comprehensive) toxicity in water quality, and enable better monitoring of acute (comprehensive) toxicity in water quality.

SEM9860-TOXOnline water quality toxicity monitoring instrumentThe online biotoxicity analyzer adopts the method of ISO 11348 to quickly and accurately test the toxicity of the sample by measuring the changes in luminescence intensity during the reaction between luminescent bacteria (Vibrio fischeri) and the sample. The toxicity spectrum covers more than 5000 potential toxic substances. This system is widely used for drinking water source safety, emergency assessment, and toxicity testing of various pollutants. It can provide early warning for water pollution events, such as sudden and significant changes in water quality, acute poisoning caused by human poisoning, etc; At the same time, it can warn of general pollution events and chronic poisoning events.

2、 Working principle:

Toxicity testing technology is a toxicity detection system based on biosensing technology, which provides an effective means of detecting water pollution (whether caused by intentional destruction or accidents). Due to the fact that acute toxicity testing can be completed within 5-30 minutes, it can ensure rapid response to changes in water quality. The basis of this system is a luminescent bacterium called Vibrio fischeri, which emits light during metabolism. The strength of the toxicity of water samples can be expressed by comparing the degree of light attenuation with the non-toxic control blank experiment.

3、 Characteristics of the instrument:

Easy to operate, integrated report generation, real-time monitoring of the entire process, and dynamic display of test project response curves

◎ Flexible detection, short measurement cycle, fast response speed. The detection process can be freely set, and the measurement cycle can be customized by the user. The detection time is as short as 5 minutes

Automated quality control and calibration to ensure the reliability and accuracy of test results, capable of detecting over 5000 toxic substances including heavy metals, pesticides, biotoxins, and other organic and inorganic toxins

◎ Fully automatic control, user programmable detection parameters, suitable for different application scenarios to automatically initiate cyclic detection mode for suspicious samples. At the same time, the control center will trigger an alarm to automatically restore the working state when the machine is powered off and reconnected

◎ Reliable operation, low usage and maintenance costs, automatic completion of sample and reagent dispensing, mixing and cleaning, avoiding cross contamination. Easy to maintain, low operating costs, maintenance once a week, only requiring reagent replacement, low consumption, short preparation time, and low cost of disposable consumables

4SEM9860-TOXOnline water quality toxicity monitoring instrumentTechnical parameters: