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用环炉法检测大气中氯化氢,不仅仪器价廉,适合现场快速检测,而且在0.01—6微克范围内定量分析误差在10％以内。本法着重对盐雾和氯气的干扰消除进行了研究。本法一次采样还可进行氯气的检测。 1.纸上采样:将经过处理的(色层定量中速)滤纸,装入三孔采样头内,前面加一张浸渍过20％胆碱碘化物的测尘滤膜。用大针筒往复拉推采样,在检测范围内采样效率为100％。 2.检测步骤:控制三孔环炉仪温度为105±2℃。将载样滤纸置于22毫米辅环上,用33毫米轴环压住。加0.05M硝酸银10微升于样品上,立即以自动充盈管用8×10微升的0.025M硝酸-0.025M醋酸混合冲洗液冲洗。取下上述滤纸,另置于16毫
The ring furnace method for the detection of hydrogen chloride in the atmosphere is not only inexpensive, suitable for rapid on-site testing, but also in the range of 0.01-6 microgram quantitative analysis of error within 10%. This Law focuses on the interference elimination of salt spray and chlorine. This method can also be a sample of chlorine gas detection. 1. Paper Sampling: The treated (color quantitative medium speed) filter paper, into the three-hole sampling head, plus a front impregnated with 20% choline iodide dust filter. With large syringe reciprocating pull sampling, within the detection range of sampling efficiency of 100%. 2. Test steps: control three-hole ring furnace temperature 105 ± 2 ℃. Place the filter paper on the 22 mm secondary ring and hold it against the 33 mm collar. Add 10 μl of 0.05M silver nitrate to the sample and rinse immediately with 8 × 10 μl of 0.025M nitric acid-0.025M acetic acid in flushing tube. Remove the filter paper, the other set at 16 milliliters