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本研究以LZB10型流量计计量溴甲烷,读数为40L/h时,每分钟理论值(下称测量值)为828.09g,以磅秤秤量值作校正。不同高度的集装箱,随着层数的增加,秤量值略有递减,其误差率一层集装箱为+2.25％,二层为+0.07％,三层为-0.91％。钢瓶不同存药量对流量计的计量没有明显的影响。箱内药剂浓度:40英尺集装箱内施药后的前6小时均比施药时的浓度高,24小时后,则比施药时的浓度低3—4g/m~2,均能达到有效杀虫浓度。通气孔不糊封与糊封,施药后3小时的浓度前者比后者低4.59g/m~3,施药后6小时低4.10g/m~3,施药后24小时低2.71g/m~3。对环境的影响,气温30℃—35℃、无风或微风情况下,大批量熏蒸后,在箱体3M以外至20M范围内,测毒仪未测出毒气含量。
In this study, methyl bromide was measured with a LZB10 flowmeter and the reading was 40 L / h. The theoretical value per minute (hereinafter referred to as the measured value) was 828.09 g, corrected for the scale weight. With different heights of containers, the weighing value decreased slightly as the number of layers increased. The error rate of one container was + 2.25%, that of the second floor was + 0.07% and that of the third floor was -0.91%. There is no obvious influence on the measurement of the flowmeter due to the different storage amount of the cylinder. Container Pharmacy Concentration: The first 6 hours after the application of the 40-foot container is higher than the concentration at the time of application. After 24 hours, the concentration within the container is 3-4g / m ~ 2 lower than that at the time of application, Insect concentration. The air vent was not confused with the paste, the former three hours after application was 4.59g / m ~ 3 lower than the latter, 4.10g / m ~ 3 at 6 hours after application and 2.71g / m ~ 3. Impact on the environment, the temperature 30 ℃ -35 ℃, no wind or breeze case, high-volume fumigation, outside the box 3M to 20M range, the instrument did not detect toxic gas content.