Method for detecting comprehensive toxicity of water sample

A detection method and toxicity technology, which is applied in the field of comprehensive toxicity detection of water samples, can solve problems such as failure to meet regulatory needs, false positives, etc., and achieve reliable detection results, comprehensive functions, and improved reliability.

Pending Publication Date: 2022-01-11
FOCUSED PHOTONICS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For toxic events, if only qualitative results are output, it is increasingly unable to meet the regulatory needs, and there are still problems such as false positives in the detection

Method used

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  • Method for detecting comprehensive toxicity of water sample

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Effect test

Embodiment 1

[0031] figure 1 Schematically provides the flow chart of the detection method of water sample comprehensive toxicity of the embodiment of the present invention, as figure 1 As shown, the detection method of described water sample comprehensive toxicity comprises the following steps:

[0032] (A1) Detect luminescent bacteria and judge whether the luminescent bacteria meet the requirements;

[0033] If the requirements are met, proceed to step (A2);

[0034] If the requirements are not met, replace the luminescent bacteria until the requirements are met;

[0035] (A2) Mix the luminescent bacteria and the water sample, and detect the parameters of the mixture, such as luminescence inhibition rate and / or correction factor;

[0036] (A3) judging whether the parameter exceeds a threshold;

[0037] If exceeding the threshold, enter step (A4);

[0038] If the threshold is not exceeded, qualitatively obtain the comprehensive toxicity of the water sample;

[0039] (A4) re-detectin...

Embodiment 2

[0059] An application example of the detection method for comprehensive toxicity of water samples according to Example 1 of the present invention.

[0060] (A1) Mix the luminescent bacteria-Vibrio fischeri with the standard poison to obtain the comprehensive toxicity of the standard poison, such as inhibition rate, correction factor or half-maximal effect concentration;

[0061] Judging whether the comprehensive toxicity of the standard poison (prepared with zinc sulfate heptahydrate) exceeds the threshold, the threshold of the inhibition rate is 50%, the threshold of the correction factor is 0.6-1.8, and the threshold of the half-maximal effect concentration is 1.4-2.9mg / L;

[0062] If the threshold value is exceeded (parameters representing comprehensive toxicity all exceed the threshold value, if the parameters use inhibition rate and correction factor, the inhibition rate and correction factor both exceed the threshold value), and the number of times exceeding the threshold...

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Abstract

The invention provides a method for detecting the comprehensive toxicity of a water sample, which comprises the following steps: (A1) detecting luminous bacteria, and judging whether the luminous bacteria meet requirements or not; if the requirements are met, entering the step (A2); if the requirements are not met, changing the luminous bacteria until the requirements are met; (A2) mixing the luminous bacteria and the water sample, and detecting parameters of the mixed solution; (A3) judging whether the parameter exceeds a threshold value or not; if the threshold value is exceeded, entering the step (A5); if the threshold value is not exceeded, qualitatively obtaining the comprehensive toxicity of the water sample; (A4) detecting the water sample and / or the luminous bacteria in the step (A2) again to obtain a detection result; (A5) judging whether the detection result accords with the first detection result or not; if not, determining that the comprehensive toxicity obtained in the step (A3) is wrong; and if so, determining that the comprehensive toxicity obtained in the step (A3) is accurate. The method has the advantages of accurate detection and the like.

Description

technical field [0001] The invention relates to water sample detection, in particular to a detection method for comprehensive toxicity of water samples. Background technique [0002] The detection of water quality comprehensive toxicity is mainly through biological toxicity tests, such as fish acute and chronic toxicity tests, flea toxicity tests, algae toxicity tests, luminescent bacteria toxicity tests, etc. The existing equipment / systems on the market basically focus on how to realize the online monitoring of comprehensive toxicity of water quality, but there is no report on how to improve the effective monitoring of comprehensive toxicity. [0003] The characteristics of water quality comprehensive toxicity analysis are different from general chemical analysis methods. It uses the characteristics of specific aquatic organisms to change their behavior independently when they encounter toxic pollutants, and realizes the monitoring and early warning technology of water poll...

Claims

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Application Information

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IPC IPC(8): G01N33/18
CPCG01N33/1866
Inventor 周兴鹏华佳楠
Owner FOCUSED PHOTONICS
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