Micro solid-phase extraction method of membrane-protected coordination polymer of polybrominated diphenyl ethers in multiple mediums
A technology of polybrominated diphenyl ethers and coordination polymers, which is applied in the fields of applied chemistry and analytical chemistry, can solve the problems of narrow independent application range, etc., and achieve the effects of shortening pretreatment time, high sensitivity and good reproducibility
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[0018] Example 1
[0019] (1) Preparation of micro-solid phase extraction bag for membrane protection complex
[0020] Add 1 mol of terephthalic acid and 2 mol of sodium hydroxide into the secondary water, after fully stirring and dissolving, add 1 mol of copper nitrate trihydrate (Cu(NO 3 ) 2 ·3H 2 O), continue to stir for 3 hours until a blue powdery precipitate is formed in the solution. The filtered and air-dried blue powder is placed in a brown light mouth bottle for later use.
[0021] Cut the polypropylene film with 0.2μm pore size to a size of 3.0cm×1.0cm, fold the long side in half, heat seal the openings on both sides with a small laminator, and pour 10mg of the above synthesized copper terephthalate complex into the polypropylene film In the bag, then the polypropylene film bag is completely sealed and the burrs are trimmed. Finally, the micro-solid-phase extraction material bag with intact sealing performance was ultrasonically cleaned in pure water and methanol for 5 m...
Example Embodiment
[0036] Example 2 Analysis of standard soil samples
[0037] (1) Preparation of micro-solid phase extraction bag for membrane protection complex
[0038] Add 1 mol of terephthalic acid and 2 mol of sodium hydroxide into the secondary water, after fully stirring and dissolving, add 1 mol of copper nitrate trihydrate (Cu(NO 3 ) 2 ·3H 2 O), continue to stir for 3 hours until a blue powdery precipitate is formed in the solution. The filtered and air-dried blue powder is placed in a brown light mouth bottle for later use.
[0039] Cut the polypropylene film with 0.22μm pore size to a size of 2.0cm×0.8cm, fold the long side in half, heat seal the openings on both sides with a small laminator, and pour 10mg of the above synthesized copper terephthalate complex into the polypropylene film In the bag, then the polypropylene film bag is completely sealed and the burrs are trimmed. Finally, the micro-solid-phase extraction material bag with intact sealing performance was ultrasonically cleaned...
Example Embodiment
[0051] Example 3 Analysis of Standardized Soil Sample
[0052] (1) Preparation of micro-solid phase extraction bag for membrane protection complex
[0053] Add 1 mol of terephthalic acid and 2 mol of sodium hydroxide into the secondary water, after fully stirring and dissolving, add 1 mol of copper nitrate trihydrate (Cu(NO 3 ) 2 ·3H 2 O), continue to stir for 3 hours until a blue powdery precipitate is formed in the solution. The filtered and air-dried blue powder is placed in a brown light mouth bottle for later use.
[0054] Cut the polypropylene film with 0.22μm pore size to a size of 3.0cm×1.5cm, fold the long side in half, heat seal the openings on both sides with a small laminator, and pour 10mg of the above synthesized copper terephthalate complex into the polypropylene film In the bag, then the polypropylene film bag is completely sealed and the burrs are trimmed. Finally, the micro-solid-phase extraction material bag with intact sealing performance was ultrasonically clea...
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