Method for compounding fumigant and compound fumigant

A fumigant and the same technology are applied in the compound method and the field of fumigant compounded by sulfuryl fluoride and chlorine gas, which can solve the problem of strong corrosiveness of chlorine gas, reduce the corrosiveness and improve the sterilization effect. , the effect of the simple method

Active Publication Date: 2010-06-23
CHINESE ACAD OF INSPECTION & QUARANTINE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Chlorine gas has a good bactericidal effect, but chlorine gas is highly corrosive. Compounding sulfuryl fluoride and chlorine gas in a certain proportion not only maintains the original insecticidal and rodent killing effects of sulfuryl fluoride, but also has a good Bactericidal effect, and can reduce the corrosivity of chlorine in the compound fumigant, the research in this area has not been reported in the literature

Method used

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  • Method for compounding fumigant and compound fumigant
  • Method for compounding fumigant and compound fumigant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Vacuumize the steel cylinder, and then weigh the steel cylinder with an electronic scale; connect the air inlet of the vacuumized steel cylinder with the gas outlet of the sulfuryl fluoride cylinder, and use the vacuum degree of the steel cylinder to inhale the sulfuryl fluoride gas into the steel cylinder, weigh the steel cylinder again with an electronic scale, the weight difference between the two times is the quality of sulfuryl fluoride in the steel cylinder; connect the air inlet of the steel cylinder containing sulfuryl fluoride with the gas outlet of the chlorine cylinder, According to the remaining vacuum in the steel cylinder and the pressure of the chlorine gas cylinder, a certain amount of chlorine gas is pressed into the steel cylinder, and weighed with an electronic scale to obtain a compound fumigant of sulfuryl fluoride and chlorine gas to ensure the mass ratio of sulfuryl fluoride and chlorine gas 85%: 15%.

Embodiment 2

[0018] Vacuumize the steel cylinder, and then weigh the steel cylinder with an electronic scale; connect the air inlet of the vacuumized steel cylinder with the gas outlet of the sulfuryl fluoride cylinder, and use the vacuum degree of the steel cylinder to inhale the sulfuryl fluoride gas into the steel cylinder, weigh the steel cylinder again with an electronic scale, the weight difference between the two times is the quality of sulfuryl fluoride in the steel cylinder; connect the air inlet of the steel cylinder containing sulfuryl fluoride with the gas outlet of the chlorine cylinder, For the remaining vacuum in the steel cylinder and the pressure of the chlorine gas cylinder, a certain amount of chlorine gas is pressed into the steel cylinder, weighed with an electronic scale, and the compound fumigant of sulfuryl fluoride and chlorine gas is obtained. The mass ratio of sulfuryl fluoride and chlorine gas is 95%: 5%.

Embodiment 3

[0020] The composite fumigant containing sulfuryl fluoride and chlorine obtained by the method of Example 1 was used to carry out the sterilization experiment.

[0021] The 3rd generation Escherichia coli 8099 and Staphylococcus aureus were respectively inoculated on the agar slant, cultured at 37°C for 24 hours, washed with 5.0ml sterile normal saline diluent, and transferred to a sterile test tube. After fully shaking, make a bacterial suspension and store it in a 4°C refrigerator for later use. Perform viable culture counts before use. After counting, the bacterial suspension was diluted to about 10 7 cfu / ml. Spread the sterilized carrier sheets flat on a sterile plate, and add the bacterial suspension drop by sheet, the amount of each drop is 20 μl. Use a 20 μl pipette to connect a sterilized plastic tip to drip the bacterial solution, and use an inoculation loop to spread the entire surface of the carrier evenly. After the bacterial suspension is dripped, put the carri...

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Abstract

The invention belongs to the field of fumigants, which relates to a method for compounding a fumigant and a fumigant prepared by compounding two components of sulfuryl fluoride gas and chlorine gas. The method for compounding the fumigant comprises the following steps of: firstly, charging the sulfuryl fluoride gas into a steel cylinder and then charging the chlorine gas into the same steel cylinder so as to obtain a compound fumigant of the sulfuryl fluoride gas and the chlorine gas in the steel cylinder, or charging the chlorine gas into the steel cylinder and then charging the sulfuryl fluoride gas into the same steel cylinder so as to obtain the compound fumigant of the sulfuryl fluoride gas and the chlorine gas in the steel cylinder, wherein the range of the mass ratio of the sulfuryl fluoride gas to the chlorine gas in the steel cylinder is between 85-95 percent:5-15 percent. The method is simple and practical, and the obtained compound fumigant not only enhances the sterilization effect of fumigating gas but also lowers the corrosiveness of the chlorine gas in the compound fumigant; and meanwhile, the compound fumigant has the functions of insect destruction, deratization and disinfection.

Description

technical field [0001] The invention belongs to the field of fumigants, and relates to a fumigant compounding method and a fumigant compounded from sulfuryl fluoride and chlorine gas. technical background [0002] The currently used fumigants mainly include methyl bromide, ethylene oxide, sulfuryl fluoride, and phosphine. The development of a new fumigant will be very expensive in terms of time and capital investment, and there is a relatively high risk. In addition, single-component fumigants often cannot meet the requirements of production practice. For example, sulfuryl fluoride has good penetrability, kills adults, larvae and rodents of insects, and has low residues. It is a good fumigation (Zheng Jianning et al. 2007. Application research of sulfuryl fluoride in pest control; Chinese Journal of Vector Biology and Control, 18(1)73~75), but the effect of this fumigant on killing insect eggs is relatively poor . The fumigant proposed by Li Wangchang et al. has no bacteri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N59/10A01N59/00A01N25/18A01P7/00
Inventor 张顺合慈颖张乐王林李金有
Owner CHINESE ACAD OF INSPECTION & QUARANTINE
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