ISO 6978-2:2003 天然气-水银测定-第2部分：金铂合金融合进行水银取样
标准编号：ISO 6978-2:2003
中文名称：天然气-水银测定-第2部分：金铂合金融合进行水银取样
英文名称：Natural gas — Determination of mercury — Part 2: Sampling of mercury by amalgamation on gold/platinum alloy
发布日期：2003-10
标准范围
本ISO 6978-2:20 03规定了一种通过金/铂(Au/Pt)合金螺纹汞齐取样法测定管道质量天然气中总汞含量的方法。该方法适用于无冷凝时的原料天然气取样。在常压下，该方法适用于天然气样品中0.01微克/立方米至100微克/立方米范围内汞含量的测定。在较高压力下（高达8兆帕），这种取样方法适用于测定0.001微克/立方米至1微克/立方米范围内的汞含量。通过测量汞蒸气在253.7 nm处的吸光度或荧光来确定收集的汞。
This ISO 6978-2:2003 specifies a method for the determination of total mercury content of pipeline quality natural gas using a sampling method by amalgamation on gold/platinum (Au/Pt) alloy thread. This method is applicable to the sampling of raw natural gas when no condensation is present. At atmospheric pressure, this method is suitable for the determination of mercury content within the range of 0,01 microgram /m3 to 100 micrograms/m3 in natural gas samples. At higher pressures (up to 8 MPa), this sampling method is suitable for the determination of mercury contents within the range of 0,001 microgram/m3 to 1 microgram/m3. The collected mercury is determined by measuring the absorbance or fluorescence of mercury vapour at 253,7 nm.
标准预览图
