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

Active Publication Date: 2019-09-13
SHANXI AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

DLLME can reduce the consumption of samples and solvents, achieve a higher pre-concentration factor and extraction rate, and is easy to operate; however, the types of extractants used are limited, and most of the extractants are halogenated hydrocarbons represented by chloroform, which are highly toxic and long-term Use will endanger human health and pollute the environment
In the process of operation, the dispersion of the extractant is usually completed by external chemical compounds or other methods such as mechanical stirring, ultrasonic waves, microwave ovens or heating. The operation is complicated and time-consuming. The collection of the extractant is usually done by centrifugation. But this may increase the time required for the entire extraction process, and a part of the extraction solvent is extremely difficult to extract

Method used

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  • Magnetic effervescent tablet, preparation method thereof, and application of magnetic effervescent tablet in extraction of triazine herbicides in water
  • Magnetic effervescent tablet, preparation method thereof, and application of magnetic effervescent tablet in extraction of triazine herbicides in water
  • Magnetic effervescent tablet, preparation method thereof, and application of magnetic effervescent tablet in extraction of triazine herbicides in water

Examples

Experimental program
Comparison scheme
Effect test

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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Abstract

The invention provides a magnetic effervescent tablet, a preparation method thereof, and an application of the magnetic effervescent tablet in the extraction of triazine herbicides in water, and belongs to the technical field of sample detection. The magnetic effervescent tablet comprises a magnetic material, sodium aliphatate, a proton donor, a salt and an alkaline salt; the magnetic material isnanometer ferroferric oxide; the sodium aliphatate is any one of sodium caprylate, sodium hexanoate and sodium decanoate; the proton donor is any one of citric acid, oxalic acid and sodium dihydrogenphosphate; the salt is sodium chloride; and the alkaline salt is sodium bicarbonate or sodium carbonate. The application has the advantages of simplicity and quickness in operation, simple and easy operation of two-phase separation, high extraction efficiency, no need of an extraction device, minimal consumption of organic solvent products, greenness and environmental protection.

Description

technical field [0001] The invention belongs to the technical field of sample detection, and specifically discloses a magnetic effervescent tablet, a preparation method thereof and application of triazine herbicides in extraction water. Background technique [0002] As a part of nature, water is a transparent and colorless chemical substance. Water is an indispensable basic requirement for all life on earth and an indispensable part of human production and life. Water is easily polluted by other substances. Water pollution is divided into two categories: one is natural pollution; the other is man-made pollution. Man-made pollution is currently one of the greatest risks to water bodies. Triazine herbicides are commonly used as high-efficiency herbicides for the prevention of weed growth in agricultural fields, due to their high mobility and water solubility, triazine residues are strongly partitioned into soil and water, these properties make triazine Azinoid herbicides hav...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/28B01J20/22B01J20/30G01N30/06C02F1/28C02F101/30
CPCB01J20/28009B01J20/28011B01J20/22B01J20/3007G01N30/06C02F1/285C02F2101/38G01N2030/062Y02A50/30
Inventor 荆旭程晓宇王晓闻杨佳丽赵文霏黄鑫贾丽艳
Owner SHANXI AGRI UNIV
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