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Method for simultaneously determining atrazine, 2, 4-dichlorphenoxyacetic acid, carbofuran and aldicarb in water body

A technology of dichlorophenoxyacetic acid and atrazine, which is applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems of cost multiplication, efficiency reduction, unavoidable contamination or loss, low recovery rate, etc. Achieve the effect of improving measurement efficiency, strong qualitative ability and reducing pollution

Pending Publication Date: 2021-11-02
SHANDONG INST OF GEOPHYSICAL & GEOCHEM EXPLORATION
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  • Application Information

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Problems solved by technology

The pretreatment methods of liquid-liquid extraction and solid-phase extraction usually have disadvantages such as low recovery rate and difficulty in avoiding contamination or loss, and the inconsistency of analysis methods and measuring instruments leads to a double increase in cost and a double decrease in efficiency; Both of them restrict the analytical efficiency of atrazine, 2,4-dichlorophenoxyacetic acid, carbofuran and aldicarb

Method used

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  • Method for simultaneously determining atrazine, 2, 4-dichlorphenoxyacetic acid, carbofuran and aldicarb in water body
  • Method for simultaneously determining atrazine, 2, 4-dichlorphenoxyacetic acid, carbofuran and aldicarb in water body
  • Method for simultaneously determining atrazine, 2, 4-dichlorphenoxyacetic acid, carbofuran and aldicarb in water body

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Embodiment 1

[0036] 1. Pass the water body to be measured through a 0.22μm organic filter head to obtain a water body sample;

[0037] The preparation of the mixed standard solution is carried out according to the following steps:

[0038] 2.1) Standard stock solution: Prepare standard stock solutions of atrazine, 2,4-dichlorophenoxyacetic acid, carbofuran, and aldicarb with a concentration of 1000 μg / ml respectively; the solvent of atrazine is methanol The solvent of 2,4-dichlorophenoxyacetic acid is acetonitrile; the solvent of carbofuran is methanol; the solvent of aldicarb is methanol;

[0039] 2) Pipetting: transfer 0.01ml each of atrazine, 2,4-dichlorophenoxyacetic acid, carbofuran, and aldicarb standard stock solution into a 1mL volumetric flask, and dilute to volume with water;

[0040] 3) Dilution: absorb the solution in the volumetric flask in step 2), and dilute with water to form a series of mixed standard solutions of atrazine, 2,4-dichlorophenoxyacetic acid, carbofuran, and ...

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Abstract

The invention relates to a method for simultaneously determining atrazine, 2, 4-dichlorphenoxyacetic acid, carbofuran and aldicarb in a water body, which comprises the following steps: preparing a water body sample, preparing a mixed standard solution, drawing a working curve and determining a sample result, and is characterized in that the water body sample is prepared according to the following steps: enabling the water body to be determined to pass through a 0.22 mu m organic filter head; according to the method, the tedious means that the atrazine, the 2, 4-dichlorphenoxyacetic acid and the carbofuran in the water body need to be independently pretreated for three times and are independently measured by using different instruments in the existing method regulation are simplified, the dosage of chemical reagents is reduced, the labor intensity of analysis operators and the analysis cost are reduced, the UPLC-MS / MS is adopted to measure the sample, and compared with the traditional analysis technology, the UPLC-MS / MS has the advantages of low detection limit, less interference, high sensitivity, high analysis speed and less reagent consumption, and is an ideal, high-efficiency and low-cost organic matter analysis technology.

Description

technical field [0001] The invention relates to a method for simultaneously determining atrazine, 2,4-dichlorophenoxyacetic acid, carbofuran and aldicarb in water. Background technique [0002] The water environment is one of the basic elements of the environment, an important place for the survival and development of human society, and the most seriously disturbed and damaged area by human beings. At present, water resources have become a shortage resource for my country's social and economic development. The quality of water environment is closely related to the daily life of the people. Ensuring the safety of the water environment is not only to meet the needs of the people's survival and development, but also the key to achieving sustainable development in the future. Water quality testing is a sharp edge to ensure the safety of the water environment. Reliable testing data and testing methods provide basic data support for scientifically formulating ecological and enviro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02G01N30/06G01N30/72G01N30/86
CPCG01N30/02G01N30/06G01N30/72G01N30/8634
Inventor 高玉花张宁毕建玲郝杰陈璐孙鹏飞邵长伟
Owner SHANDONG INST OF GEOPHYSICAL & GEOCHEM EXPLORATION
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