A kind of nanometer material that detects dimethoate and preparation method thereof
A technology of nanomaterials and dimethoate, which is used in the measurement of color/spectral properties to achieve the effects of high specific surface area, stable structure and increased surface effect
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Embodiment 1
[0036] The composition and weight percent of the nanometer material of the detection dimethoate provided by the present embodiment are:
[0037] Sodium silicate: 97.43%
[0038] TPPS 4 : 0.23%
[0039] Plant esterase: 2.34%
[0040] The specific method steps of its preparation method are as follows:
[0041] 1) Preparation of plant esterase enzyme solution
[0042] Using commercially available flour as raw material, according to the weight ratio of flour:distilled water as 1:6, add distilled water to the flour, stir for 10min, then centrifuge at a centrifugal speed of 3000r / min for 10min, collect the supernatant, and statically After placing it for 8 hours, the plant esterase enzyme liquid is prepared;
[0043] 2) Preparation of sol solution
[0044] According to the weight ratio of sodium silicate: distilled water is 1:4, distilled water is added to sodium silicate, and the pH of the system is adjusted to 5 with hydrochloric acid, and after ultrasonic mixing for 20s, th...
Embodiment 2
[0052] The composition and weight percent of the nanometer material of the detection dimethoate provided by the present embodiment are:
[0053] Sodium silicate: 99.31%
[0054] TPPS 4 : 0.06%
[0055] Plant esterase: 0.63%
[0056] The specific method steps of its preparation method are as follows:
[0057] 1) Preparation of plant esterase enzyme solution
[0058] Using commercially available flour as raw material, according to the weight ratio of flour:distilled water as 1:4, add distilled water to the flour, stir for 60min, then centrifuge for 15min at a centrifugal speed of 6000r / min, collect the supernatant, and statically After leaving it for 24 hours, the plant esterase enzyme liquid is prepared;
[0059] 2) Preparation of sol solution
[0060] According to the weight ratio of sodium silicate: distilled water is 1:3.17, distilled water is added to sodium silicate, and the pH of the system is adjusted to 4 with hydrochloric acid, and after ultrasonic mixing for 40s...
Embodiment 3
[0068] The composition and weight percent of the nanometer material of the detection dimethoate provided by the present embodiment are:
[0069] Sodium silicate: 98.51%
[0070] TPPS 4 : 0.13%
[0071] Plant esterase: 1.36%
[0072] The specific method steps of its preparation method are as follows:
[0073] 1) Preparation of plant esterase enzyme solution
[0074] Using commercially available flour as raw material, according to the weight ratio of flour:distilled water as 1:5, add distilled water to the flour, stir for 30min, then centrifuge at a centrifugal speed of 4000r / min for 12min, collect the supernatant, and statically Leave it for 12 hours, and the plant esterase enzyme liquid is prepared;
[0075] 2) Preparation of sol solution
[0076] According to the weight ratio of sodium silicate: distilled water is 1:3.45, distilled water is added to sodium silicate, and the pH of the system is adjusted to 4 with hydrochloric acid, and after ultrasonic mixing for 30s, th...
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