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1995～1997年对防城口岸入出境货物及集装箱实施了γ辐射监测,并分析了监测结果。结果显示:锆英砂、独居石的γ辐射剂量当量率平均数(γ_D)及最大值(γ_M)均超过国境卫生检疫放射性监测管理标准(1μ Sv/h),γ_D分别为 6.21、58.63;γ_m分别为 7.12、63.92。其余监测货物及集装箱γ_D均未超标。但来自俄罗斯的铜精矿γ_D超过标准的1/3,钾肥γ_D超过标准的2/3,除锰矿、钢板、废铜外,其余货物及集装箱γ_m均超过标准的1/3,其中铜精矿、钾肥γ_m超过标准的2/3,来自俄罗斯的钾肥γ_m为1.20,已超标。根据分析结果,提出了今后的监测重点。
From 1995 to 1997, γ-radiation monitoring was performed on imported and exported goods and containers at Fangcheng Port, and the monitoring results were analyzed. The results showed that the average gamma irradiation dose equivalent rate (γ_D) and maximum value (γ_M) of zircon sand and monazite exceeded the frontier health quarantine and radioactive monitoring management standard (1μSv/h), γ_D was 6.21 and 58.63 respectively; γ_m They are 7.12 and 63.92 respectively. The remaining monitoring goods and containers γ_D were not exceeded. However, the γ_D of copper concentrate from Russia exceeds 1/3 of the standard, and the γ_D of potash exceeds 2/3 of the standard. Except for manganese ore, steel plates, and scrap copper, the remaining goods and containers γ_m exceed the standard 1/3, including copper concentrates. Potassium fertilizer γ_m is more than 2/3 of the standard, and the potassium γ_m from Russia is 1.20, which has exceeded the standard. According to the results of the analysis, future monitoring priorities are proposed.