High-concentration lead artificial seawater and preparation method thereof

An artificial seawater, high-concentration technology, applied in the direction of adding substances to water/sewage treatment, etc., can solve the problems of in-depth marine biological toxicology research, and the lethal dose of the tested marine organisms cannot be achieved, and achieve good application prospects and improve the dissolution rate. effect of concentration

Inactive Publication Date: 2013-05-08
MARINE BIOLOGY INST OF SHANDONG PROVINCE
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this concentration often does not reach the lethal dose of the tested marine organisms, which makes it difficult to in-depth research on the toxicology of marine organisms related to Pb.

Method used

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  • High-concentration lead artificial seawater and preparation method thereof
  • High-concentration lead artificial seawater and preparation method thereof
  • High-concentration lead artificial seawater and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Preparation of artificial sea water

[0024] After weighing the listed drugs according to the requirements in the formula in Table 1, add them to 700ml of distilled water in order, and keep stirring during the period to speed up the dissolution of the drugs. After all the drugs are dissolved, add distilled water and make the volume to 1L . The prepared solution at this time is the artificial seawater required for our experiment, and its salinity is 33.

[0025] Table 1 Formula of artificial seawater

[0026] drug name Manufacturer drug specification Drug mass (g) NaCl Sinopharm Chemical Reagent Co., Ltd. Analytical pure 24.7 MgCl 2 Sinopharm Chemical Reagent Co., Ltd. Analytical pure 5.05 CaCl 2 Sinopharm Chemical Reagent Co., Ltd. Analytical pure 1.36 KCl Sinopharm Chemical Reagent Co., Ltd. Analytical pure 0.67

[0027] At present, the artificial seawater prepared by this method can be mixed with distille...

Embodiment 2

[0030] Preparation of High Concentration Lead Solution

[0031] The raw material needed for this experiment is PbCl 2 And the artificial seawater in embodiment 1. where PbCl 2 It is an analytically pure drug produced by Sinopharm Chemical Reagent Co., Ltd.; artificial seawater is prepared according to the formula mentioned in Example 1, and then it can be mixed with distilled water in proportion to be configured into solutions with a salinity of 15, 20 and 25 respectively .

[0032] First, artificial seawater with a salinity of 15, 20 and 25 and a volume of 950ml was heated to 70°C with an electric furnace, and then 2g of PbCl 2 Add the above three seawater solutions and stir continuously with a magnetic stirrer to accelerate the PbCl 2 After it was completely dissolved, it was cooled to room temperature (20°C), and finally the volume was adjusted to 1L. No crystal precipitation was observed. During the above dissolution process, heating operation must be carried out. At...

Embodiment 3

[0035] The raw material needed in this experiment is Pb(NO 3 ) 2 And the artificial seawater in embodiment 1. where Pb(NO 3 ) 2 It is an analytically pure drug produced by Sinopharm Chemical Reagent Co., Ltd.; the artificial seawater with a salinity of 33 in Example 1 can be mixed with distilled water in proportion to prepare solutions with a salinity of 15, 20 and 25 respectively.

[0036] First, artificial seawater with a salinity of 15, 20 and 25 and a volume of 950ml was heated to 80°C with an electric furnace, and then 3g of Pb(NO 3 ) 2 Add the above sea water solution and stir continuously with a magnetic stirrer to accelerate the Pb(NO 3 ) 2 After it was completely dissolved, it was cooled to room temperature (20°C), and finally the volume was adjusted to 1L. No crystal precipitation was observed. During the above dissolution process, heating operation must also be carried out. At normal temperature (20°C), 3g of Pb(NO 3 ) 2 Dissolve in 1L of artificial sea wat...

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Abstract

The invention relates to high-concentration lead artificial seawater which consists of artificial seawater and lead salt, wherein Pb<2+> has the concentration of 7.19-9.06mmol / L. According to the high-concentration lead artificial seawater, the artificial seawater mixing serves as the basis, HCO<3->, CO3<2-> and other faintly acid negative ions are artificially removed, and the Pb<2+> is prevented from conducting a double hydrolysis reaction with the seawater; and moreover, the dissolving concentration of Pb<2+> in the artificial seawater environment is improved. According to the method, the dissolving concentration of Pb<2+> in the artificial seawater environment is greatly improved, and the high-concentration lead artificial seawater can be widely applied to the research of marine biophysiology, toxicology and the like and has a good application prospect.

Description

technical field [0001] The invention relates to the technical field of chemical substance seawater solution and its preparation process, in particular to a high-concentration lead artificial seawater and its preparation method. Background technique [0002] Lead (Pb) is one of the most toxic heavy metal pollutants known, and it is a chronic, accumulative poison and potential carcinogen and mutagen. The United States Environmental Protection Agency (EPA) included it in the list of environmental hormones. my country's "Marine Monitoring Specifications" also lists the lead concentration in seawater as one of the items that must be checked in the analysis of four heavy metals (Zn, Hg, Cu and Pb). In recent years, with the intensification of environmental pollution in coastal areas, the habitats of marine organisms have been greatly impacted, and heavy metal pollution has become a relatively common phenomenon. At present, scholars at home and abroad have accumulated a large amo...

Claims

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Application Information

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IPC IPC(8): C02F1/68
Inventor 刘洪军王其翔唐学玺周健宋静静田雨露赵文溪
Owner MARINE BIOLOGY INST OF SHANDONG PROVINCE
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