A method for the analysis of polybrominated diphenyl ether compounds in soil by liquid chromatography tandem mass spectrometry
A polybrominated diphenyl ether and tandem mass spectrometry technology, which is applied in the field of liquid chromatography tandem mass spectrometry analysis of polybrominated diphenyl ether compounds in soil, can solve problems such as complex soil composition, and achieve the effects of increasing extraction area, high response value and enhancing response signal.
Active Publication Date: 2021-07-16
TAIZHOU UNIV +1
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[0004] In addition, due to the complex composition of the soil, the recovery rate is only 65-93% and the standard deviation reaches 7-23% when LC is used for detection alone. Therefore, it is necessary to design a new test method to detect improve accuracy
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[0028] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0029]A method for analyzing polybrominated diphenyl ether compounds in soil by liquid chromatography tandem mass spectrometry, comprising the following steps,
[0030] (a) Draw a standard curve:
[0031] Dilute the standard solution 200 times, 100 times, 50 times, 25 times, 12.5 times and 6.25 times with the initial mobile phase, measure 1.0ml, add 16μL of 5.15mg / L and 4.88mg / L 13 C 12 -BDE-139 and 13 C 12 -Two internal standards of BDE-209 were tested under certain conditions of liquid chromatography and mass spectrometry, and obtained as attached figure 1 As shown in the spectrum, the standard curves of 8 kinds of target compounds are drawn, as shown in the following table 1:
[0032] Table 1. Standard curves of 8 PBDEs
[0033] Target linear equation correlation coefficient MDL (μg / kg) BDE-28 the y 1 =0.0147x 1 +0.0002
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Abstract
The invention discloses a liquid chromatography tandem mass spectrometry for analyzing polybrominated diphenyl ether compounds in soil, and relates to the field of soil detection. The main point of the technical scheme is to use liquid chromatography and mass spectrometry in series, obtain a standard spectrogram through standard solution testing and draw the target The standard curve of the compound, and then the sample is pretreated and the corresponding target peak is found in the computer test combined with the standard spectrum, and then the concentration of the target compound is calculated according to the standard curve. In the whole operation mode, the peak shape of the target compound is sharp, the response is strong, the analysis time of the instrument is short, and the speed is fast, thereby effectively improving the accuracy of the test.
Description
technical field [0001] The invention relates to the field of soil pollutant content testing, in particular to a method for analyzing polybrominated diphenyl ether compounds in soil by liquid chromatography tandem mass spectrometry. Background technique [0002] As a typical brominated flame retardant, polybrominated diphenyl ethers (PBDEs) mainly include three industrial products, pentabromodiphenyl ether, octabromodiphenyl ether and decabromodiphenyl ether. With the advantages of good combustion effect, it has been widely used in electronic appliances, textiles, transportation and other industries. However, PBDEs are refractory, fat-soluble and bioaccumulative at the same time. In recent years, they have been gradually controlled by legislation. Included in the list of supplementary persistent organic pollutants controlled by the Stockholm Convention, decabromodiphenyl ether was included in the list of three types of carcinogens by the International Agency for Research on ...
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IPC IPC(8): G01N30/88
CPCG01N30/88G01N2030/8845
Inventor 余彬彬牛禾丁苗徐方曦
Owner TAIZHOU UNIV