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Water quality reference derivation method for selenium and water quality safety evaluation method

A water quality benchmark and water environment technology, which can be used in testing water, measuring devices, instruments, etc., to solve problems such as inability to protect aquatic organisms, difficulty in obtaining water quality benchmark data, etc., and achieve the effect of protecting aquatic ecosystems

Inactive Publication Date: 2016-07-06
CHINESE RES ACAD OF ENVIRONMENTAL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Regarding the water quality benchmark method of selenium, the tissue-based toxicity data of selenium has not been used to deduce the water quality benchmark of selenium, so it is difficult to obtain more effective water quality benchmark data of selenium, which may not be able to protect aquatic organisms very well

Method used

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  • Water quality reference derivation method for selenium and water quality safety evaluation method
  • Water quality reference derivation method for selenium and water quality safety evaluation method
  • Water quality reference derivation method for selenium and water quality safety evaluation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The derivation method of selenium water quality benchmark and the water quality safety assessment method include the following steps:

[0031] (1) Step 1. Collect selenium-based toxicity data (NOED) from the ERED tissue-effect database for analysis and screening. For data with LOED but no NOED, use the formula NOED=LOED÷2 to calculate NOED, toxicity data As shown in Table 1;

[0032] Table 1 Tissue-based toxicity data of selenium (mg / kg)

[0033]

[0034]

[0035]

[0036] (2) Step 2: Analyze the quality and quantity of the toxicity data obtained to determine whether the minimum data requirements are met;

[0037] In this example, a total of 31 toxicity data are used, including data for 26 vertebrates, 4 invertebrates and 1 plant.

[0038] (3) Step 3. Use species sensitivity distribution method to simulate the NOED obtained from sorting;

[0039] Such as figure 1 Shown. Calculate the baseline value based on the tissue (HC that protects 95% of species 5 Value), calculated accordi...

Embodiment 2

[0045] The derivation method of selenium water quality benchmark and the water quality safety assessment method include the following steps:

[0046] (1) Step 1. Collect selenium-based toxicity data (NOED) from the ERED tissue-effect database for analysis and screening. For data with LOED but no NOED, use the formula NOED=LOED÷2 to calculate NOED, toxicity data As shown in table 2;

[0047] Table 2 Tissue-based toxicity data of selenium (mg / kg)

[0048] Species

English

NOED

Serial number

Mudskipper

Mudskipper

0.05

1

Blackhead

Fathead minnow

0.12

2

Chironomus

Midge

0.255

3

Bony fish

Bonyfish

0.4

4

Clam

Clam–Asiatic

0.6

5

Carp

Minnows

1

6

Blue sunfish

Green sunfish

1.3

7

Crassostrea gigas

Sacramento splittail

1.84

8

Spotted Sandpiper

Spotted sandpiper

2.2

9

Daphnia

Water flea

2.94

10

Chlorella

Algae–Green

4.5

11

American Char

Trout–Brook

5.28

12

5 --> Rotifer

Rotifer

6

13

Crested Sunfish

redear sunfish

11.03

14

Lamb char

Dolly varde...

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Abstract

The invention discloses a water quality reference derivation method for selenium and a water quality safety evaluation method. According to the method, the reference based on tissues is derived through toxicity data based on tissues, and then biological accumulation factors of representative species are used for converting the reference based on the tissues into a water quality reference based on water. By means of the water quality reference derivation method for selenium and the water quality safety evaluation method, the aquatic organism protecting water quality reference of accumulative substances is determined scientifically, the defects that the traditional water quality reference does not take biological accumulation and biological effectiveness into consideration are avoided, and the water ecosystem of China can be protected more scientifically.

Description

Technical field [0001] The invention belongs to the technical field of water quality safety evaluation, and specifically relates to a selenium water quality benchmark derivation method and a water quality safety evaluation method. Background technique [0002] Water quality standards are an important criterion for water environmental management. As the basis for scientifically formulating water quality standards, water quality standards are an important research content and major technological demand in the field of my country's environment. One of the important connotations of water quality benchmarks is that they are regional. The scientific determination of benchmarks needs to be combined with the country's natural environmental characteristics. The characteristics of ecological environment and pollution types in my country are significantly different from those of foreign countries. Foreign water quality standards may not be suitable for my country's water environment manage...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/18G01N33/50
CPCG01N33/18G01N33/5014
Inventor 苏海磊吴丰昌郭飞孙福红
Owner CHINESE RES ACAD OF ENVIRONMENTAL SCI
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