Magnetic effervescent tablet, preparation method thereof, and application of magnetic effervescent tablet in extraction of triazine herbicides in water
A technology of effervescent tablets and herbicides, which is applied in the field of magnetic effervescent tablets and its preparation, can solve the problems of difficult extraction of extraction solvents, limited types of extraction agents, and harm to human health, and achieve two-phase separation, which is simple and easy to operate, without toxicity The effect of low consumption and small consumption
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Embodiment 1
[0027] The present embodiment provides a magnetic effervescent tablet, the dosages of sodium caprylate, sodium caproate and sodium caprate are 10 mg, 30 mg, 50 mg, 70 mg, 100 mg, respectively, and 1000 mg sodium chloride, 20 mg Nano-iron ferric oxide, 100 mg citric acid and 75 mg sodium bicarbonate were weighed out with an electronic balance, mixed thoroughly, put into a tableting mold, and pressed using a HY-2A infrared tablet press, increasing the pressure to 6 Mpa and after pressing the tablet under this pressure for 40 s, take out the compressed effervescent tablet for use.
[0028] The present embodiment provides a kind of application of simazine in the extraction water of above-mentioned magnetic effervescent tablet, comprises the following steps:
[0029] Step 1: Prepare water samples, the concentration of simazine in the water samples is 500 ng mL -1 ;
[0030] Step 2: Take 5 mL of water sample in a 10 mL centrifuge tube, put the previously pressed magnetic effervesc...
Embodiment 2
[0036] This embodiment provides a magnetic effervescent tablet, the dosage of sodium hexanoate is 10 mg, 20 mg, 30 mg, 40 mg, 50 mg, 60 mg, 70 mg, 100 mg, respectively, and 1000 mg sodium chloride, 20 mg mg nanometer iron ferric oxide, 100 mg citric acid and 75 mg sodium bicarbonate were weighed out using an electronic balance, mixed thoroughly, and put into a tableting mold. The pressing process was the same as in Example 1.
[0037] The present embodiment provides an application of triazine herbicides in the extraction water of the above-mentioned magnetic effervescent tablet, comprising the following steps:
[0038] Step 1: Prepare three kinds of water samples, the concentrations of simazine, atrazine and temmingzine in the water samples are all 500 ng mL -1 ;
[0039] Step 2 to step 4 are the same as in Example 1, and the results are shown in Table 2.
[0040]
[0041]The experimental results show that before 30 mg, the influence of the amount of sodium caproate on th...
Embodiment 3
[0043] The present embodiment provides a kind of magnetic effervescent tablet, and the consumption of citric acid, oxalic acid and sodium dihydrogen phosphate is respectively 25 mg, 100 mg, 125 mg, 200 mg, and respectively with 1000 mg sodium chloride, 20 mg nanometer iron ferric oxide , 30 mg sodium hexanoate and 75 mg sodium bicarbonate were weighed out using an electronic balance and then fully mixed and put into a tableting mold. The pressing process was the same as in Example 1.
[0044] This embodiment provides a kind of application of atrazine in the extraction water of above-mentioned magnetic effervescent tablet, comprises the following steps:
[0045] Step 2: Prepare water samples, the concentration of atrazine in the water samples is 500 ng mL -1 ;
[0046] Step 2 to step 4 are the same as in Example 1, and the results are shown in Table 3.
[0047]
[0048] The proton donor agent (acid) is used in this experiment to react with fatty acid sodium and alkaline sa...
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