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Applications of inductively coupled plasma mass spectrometry in boron detection of water-based gel

An inductive coupling and plasma technology, which is used in the preparation of test samples, measurement devices, and material analysis by electromagnetic means, etc., can solve the problems of long analysis time, complicated operation, and long processing time.

Active Publication Date: 2013-11-20
CHINA TOBACCO GUANGXI IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the determination methods of boron reported at home and abroad mainly include formimine-H spectrophotometry and curcumin spectrophotometry. The analysis time of these two methods is long and the operation is complicated.
CN102680561A reports a method for determining the content of boric acid in water-based glue for tobacco use. The processing time of this method is long, which is not conducive to rapid sampling

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Use an electronic balance to weigh 0.1 g of the water-based glue sample into a microwave digestion tank, add 4 mL of nitric acid and place it on an electric heating plate, pre-react at 80 °C for 50 min, and cool down. Add 2mL of nitric acid and 3mL of hydrogen peroxide to the processed sample, seal it into a microwave digestion instrument, set up digestion according to the following procedures, and make a blank sample at the same time:

[0025] 1) The heating time from room temperature to 125°C is 5 minutes, and the holding time is 5 minutes.

[0026] 2) The heating time from 125°C to 155°C is 5 minutes, and the holding time is 5 minutes.

[0027] 3) The heating time from 155°C to 175°C is 5 minutes, and the holding time is 5 minutes.

[0028] 4) The heating time from 175°C to 190°C is 5 minutes, and the holding time is 5 minutes.

[0029] After the digestion is completed, take out the digestion tank after the temperature drops to room temperature, transfer the soluti...

Embodiment 2

[0034] Use an electronic balance to weigh 0.5 g of the water-based glue sample into a microwave digestion tank, add 5 mL of nitric acid and place it on an electric heating plate, pre-react at 150 °C for 10 min, and cool down. Add 3mL nitric acid and 4mL hydrogen peroxide to the processed sample, seal it and put it into a microwave digestion apparatus, set up digestion according to the following procedures, and make a blank sample at the same time:

[0035] 1) The heating time from room temperature to 110°C is 5 minutes, and the holding time is 5 minutes.

[0036] 2) The heating time from 110°C to 140°C is 5 minutes, and the holding time is 5 minutes.

[0037] 3) The heating time from 140°C to 160°C is 5 minutes, and the holding time is 5 minutes.

[0038] 4) The heating time from 160°C to 175°C is 5 minutes, and the holding time is 5 minutes.

[0039] After the digestion is completed, take out the digestion tank after the temperature drops to room temperature, transfer the s...

Embodiment 3

[0044] Use an electronic balance to weigh 0.3 g of the water-based glue sample into a microwave digestion tank, add 5 mL of nitric acid and place it on an electric heating plate, pre-react at 110 °C for 25 min, and cool down. Add 3mL nitric acid and 4mL hydrogen peroxide to the processed sample, seal it and put it into a microwave digestion apparatus, set up digestion according to the following procedures, and make a blank sample at the same time:

[0045] 1) The heating time from room temperature to 115°C is 5 minutes, and the holding time is 5 minutes.

[0046] 2) The heating time from 115°C to 145°C is 5 minutes, and the holding time is 5 minutes.

[0047] 3) The heating time from 145°C to 165°C is 5 minutes, and the holding time is 5 minutes.

[0048] 4) The heating time from 165°C to 180°C is 5 minutes, and the holding time is 5 minutes.

[0049] After the digestion is completed, take out the digestion tank after the temperature drops to room temperature, transfer the sol...

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Abstract

The invention discloses a detecting method of boron in water-based gel. Characteristics are that, interfering substances and solvents with relatively low boiling point in the water-based gel are removed by pre-digestion, so as to eliminate hidden dangers that may be caused by digestion process; pre-digested samples are subjected to digestion, and is added into an inductively coupled plasma mass spectrometer; and at the same time a internal standard is added for quantitative analysis. According to the detecting method, the vertical coordinate represents the ratio of mass-to-charge ratio strength of boron that is to be measured to mass-to-charge ratio strength of a corresponding internal standard element, the horizontal coordinate represents the content of boron that is to be measured to the content of the corresponding internal standard element, and a standard work curve is built. The content of boron is calculated according to the standard work curve. Advantages of the detecting method are that, sample dosage is low, operation is simple, detecting time is short, detection limit is low, and the like.

Description

technical field [0001] The invention relates to a method for determining elements in water-based glue by inductively coupled plasma mass spectrometry, in particular to a method for testing boron in water-based glue. Background technique [0002] Water-based adhesives are adhesives made of film-forming materials that can be dispersed or dissolved in water, also known as water-soluble adhesives. According to the conventional classification method, water-based adhesives can be divided into the following types: aqueous solution-based water-based adhesives, water-dispersed or emulsion-type water-based adhesives, water-based dispersions, and the like. Since the main solvent is water, there is generally a certain amount of boron in the water, and boron has certain effects on the human body and plants. One of the trace elements required for normal metabolism, it is effective in preventing calcium loss and osteoporosis in postmenopausal women, and the lack of boron will aggravate th...

Claims

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Application Information

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IPC IPC(8): G01N27/62G01N1/44G01N27/626
Inventor 吴晶晶李小兰田兆福陈志燕周芸蒋锦峰叶长文许蔼飞蒋宏霖朱静
Owner CHINA TOBACCO GUANGXI IND
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