Method for detecting 2-hydroxyl-4-methoxybenzophenone and butyl methoxydibenzoylmethane in soil
A technology of butylmethoxydibenzoylmethane and methoxybenzophenone, which is applied in the field of environmental sample detection, can solve the problems of less attention to analysis methods, and achieves improved sensitivity and accuracy, short experiment time, and reduced The effect of matrix interference
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[0043] Example 1
[0044] (1) Sample pretreatment
[0045] Collect 200g soil samples, freeze and dry them, remove large impurities such as rocks and plant roots and leaves, grind them evenly and pass through a 0.90mm sieve.
[0046] (2) Extraction
[0047] Put a piece of glass fiber filter paper at the bottom of the extraction cell, flatten it, add 5.0g of quartz sand, tap the extraction cell to make the surface of the quartz sand flat, then add 5.0g of the soil sample after pretreatment, and add 100μL after the sample surface is also flattened 1mg / L internal standard working solution, add 5.0g quartz sand, finally put in another filter paper and tighten the extraction cell. The extraction solvent was methanol / dichloromethane (90:10, v / v), the extraction temperature was 120°C, the static extraction time was 5 min, the nitrogen purge time was 60 s, and the static extraction cycle was 2 times. After the extract was evaporated to dryness with a rotary evaporator, the volume was reconst...
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[0062] Example 2
[0063] (1) Sample pretreatment
[0064] Collect 200g soil samples, freeze and dry them, remove large impurities such as rocks and plant roots and leaves, grind them evenly and pass through a 0.90mm sieve.
[0065] (2) Extraction
[0066] Put a piece of glass fiber filter paper at the bottom of the extraction cell, flatten it, add 5.0g of quartz sand, tap the extraction cell to make the surface of the quartz sand flat, then add 5.0g of the soil sample after pretreatment, and add 100μL after the sample surface is also flattened 1mg / L internal standard working solution, add 5.0g quartz sand, finally put in another filter paper and tighten the extraction cell. The extraction solvent is methanol / dichloromethane (60:40, v / v), the extraction temperature is 100°C, the static extraction time is 5 min, the nitrogen purge time is 60 s, and the static extraction cycle is 2 times. After the extract was evaporated to dryness with a rotary evaporator, the volume was reconstitute...
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