Method for detecting triazine herbicides and degradation products thereof in seawater
A technology of degradation products and detection methods, which is applied in the direction of measuring devices, instruments, and material analysis through electromagnetic means, can solve problems such as low accuracy, difficult to guarantee recovery rate, and inability to eliminate the influence of analysis results, etc., to achieve easy repeatability Now, the effect of simple operation
Active Publication Date: 2020-06-09
YELLOW SEA FISHERIES RES INST CHINESE ACAD OF FISHERIES SCI
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Problems solved by technology
The external standard method cannot eliminate the influence of the pretreatment process on the analysis results, the recovery rate is difficult to guarantee, and the accuracy is not high
Method used
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Embodiment 1
[0036] (1) Preparation of working solution
[0037] Weigh appropriate amount of triazine herbicides, degradation products and internal standard, dilute to volume with methanol, respectively prepare 1.0 mg / mL standard stock solution, and store at -18°C in the dark. Then accurately draw a certain amount of standard stock solution, dilute with methanol to prepare 1 μg / mL mixed standard external standard working solution and internal standard working solution, and store in a refrigerator at 4°C.
[0038] (2) Efficient pretreatment
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The invention discloses a method for detecting triazine herbicides and degradation products of the triazine herbicides in seawater, and belongs to the technical field of water environment detection. The method for detecting the triazine herbicides and the degradation products thereof in seawater comprises the following steps: carrying out efficient pretreatment on a seawater sample to be detected;then introducing an internal standard method and combining high-performance liquid chromatography-quadrupole tandem mass spectrometry and high-resolution mass spectrometry to rapidly, quantitatively,accurately and qualitatively analyze the triazine herbicides and degradation products thereof in the seawater sample. A sample efficient pretreatment method is adopted, and the method is simple to operate and easy to reproduce. An internal standard method is combined with high performance liquid chromatography-quadrupole tandem mass spectrometry and high-resolution mass spectrometry, and the rapid quantitative and accurate qualitative analysis is carried out on the triazine herbicides and degradation products thereof in a seawater sample.
Description
technical field [0001] The invention belongs to the technical field of water environment detection, and specifically relates to a method for qualitatively and quantitatively detecting triazine herbicides and their degradation products in seawater by an internal standard method combined with high-performance liquid chromatography-quadrupole tandem mass spectrometry and high-resolution mass spectrometry. Background technique [0002] Triazine herbicides are a class of six-membered heterocyclic compounds containing three nitrogen atoms. Because of its highly effective herbicidal effect, it is widely used to control the growth of weeds and algae in agricultural production and aquaculture. These herbicides enter the marine system through surface runoff and discharge, becoming a major source of marine environmental pollution. Due to their stable chemical properties, long half-life, refractory degradation, and high toxicity, triazine herbicides pose a serious threat to the safety ...
Claims
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IPC IPC(8): G01N30/02G01N30/06G01N30/36G01N30/86G01N27/62
CPCG01N30/02G01N30/06G01N30/36G01N30/8679G01N27/62
Inventor 孙晓杰李兆新谭杰高金芳彭吉星谭志军李风铃尚德荣翟毓秀
Owner YELLOW SEA FISHERIES RES INST CHINESE ACAD OF FISHERIES SCI
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