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Evaluation method for risk of endocrine disrupter in water body

An endocrine disruptor and evaluation method technology, which is applied in the field of risk assessment of endocrine disruptors in water bodies, and can solve problems such as the decline of the nutrient structure of the ecosystem

Pending Publication Date: 2021-11-12
HAINAN UNIVERSITY
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  • Application Information

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Problems solved by technology

EDCs may also have selective effects on specific trophic-level taxa, leading to the decline of ecosystem trophic structure

Method used

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  • Evaluation method for risk of endocrine disrupter in water body
  • Evaluation method for risk of endocrine disrupter in water body
  • Evaluation method for risk of endocrine disrupter in water body

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Embodiment 1

[0152] This embodiment provides a risk assessment method for endocrine disruptors in grouting water, specifically as follows:

[0153] 1. Determination of endocrine disruptors in water samples and sediment samples

[0154] (1) Select two sampling points in the Guangzhou section of the Pearl River, specifically: sampling at the entrance of the Shijing River and the West Channel of the Pearl River (S1) and near Lijiao (S2). When collecting 1L of water samples, take a mixed sample of three points on the left, middle and right below the horizontal plane of the same section, which is 0.5m below. Immediately add 50 mL of chromatographically pure methanol and 400 μL of 4 mol / L sulfuric acid solution to the collected water samples, put them in a 4°C ice box for later use, and carry out pretreatment within 48 hours.

[0155] On the same end face, use a grab sampler to collect the surface sediments, take the left, middle and right aliquots of the section (remove stones, branches and ot...

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Abstract

The invention discloses an evaluation method for risk of an endocrine disrupter in a water body. The method comprises the following steps: taking a water body sample to be detected and a sediment sample to be detected, determining the content of the endocrine disrupter in the water body sample to be detected, and determining the content of the endocrine disrupters and the content of total organic carbon in the sediment sample to be detected; calculating the estradiol equivalent for estrogen activity of the water body sample to be detected; calculating the estradiol equivalent for estrogen activity of the sediment sample to be detected; calculating the risk entropy of the endocrine disrupter; evaluating the risk of the endocrine disrupter in the water body according to the risk entropy; when RQ is smaller than 0.2, the risk is low, when RQ is larger than or equal to 0.2 and smaller than 2, the risk is medium, and when RQ is larger than or equal to 2, the risk is high. By implementing the method, the risk of the endocrine disrupter in the water body can be quantitatively evaluated.

Description

technical field [0001] The invention relates to the technical field of water body pollution monitoring, in particular to a method for evaluating the risk of endocrine disruptors in water bodies. Background technique [0002] Endocrine Disrupting Chemicals (EDCs) refer to a kind of exogenous substances, which have high estrogen activity, and micro-exposure can cause endocrine imbalance in organisms; in addition, EDCs can also affect the nervous system, The immune system, etc. produce toxic effects, causing the survival ability of aquatic organisms to decline. Due to the medium-strong lipophilicity of EDCs, in addition to direct toxicity to exposed organisms, they can also accumulate and latent in organisms. When this cumulative effect reaches a certain level, it can cause various toxicities such as oxidative damage and carcinogenesis to organisms. The damage cannot be eliminated in the short term, and may even be irreversible. This cumulative toxic effect can also be transm...

Claims

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Application Information

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IPC IPC(8): G01N30/06G01N30/88
CPCG01N30/06G01N30/88
Inventor 王团团王旭王赛刘应龙符继之
Owner HAINAN UNIVERSITY
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