Development of a Particulate Mass Measurement System for Quantification of Ambient Reactive Mercury.
Development of a Particulate Mass Measurement System for Quantification of Ambient Reactive Mercury.
复制标题
开发用于定量环境活性汞的颗粒质量测量系统。
DOI：
10.1021/acs.est.6b04707
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发表时间：
2017
影响因子：
11.4
通讯作者：
M. Gustin
中科院分区：
文献类型：
--
作者：
A. Pierce;M. Gustin
Teledyne 高级污染仪器 (TAPI) 602 BetaPlus 颗粒系统可对颗粒物 (PM2.5) 质量浓度进行无损分析。该仪器用于确定使用阳离子交换膜 (CEM) 进行的测量是否与标准方法、内华达州里诺两个地点的 β 衰减法以及内华达州大盆地国家公园的环境 β 衰减法和重量法具有可比性。 TAPI PM2.5 CEM 测量在统计上与其他三种 PM2.5 方法相似。一旦确定了这一点，就测试了第二个目标，即测量活性汞（RM = 气态氧化和颗粒结合汞）的破坏性方法。将 TAPI 在 CEM 上以 16.7 L/min (Lpm) 采集 24 小时的样品与内华达大学 Reno-Reactive Mercury Active System (UNRRMAS，1 Lpm) CEM 和 Tekran 2537/1130/1135 系统 (7 Lpm) 测量的样品进行比较。鉴于 TAPI 和 UNRRMAS 中使用了 CEM，我们假设两者都应该收集 RM。由于高流速和不同的入口，TAPI 数据系统地低于 UNRRMAS。 RM 浓度之间的相关性表明，TAPI 可用于估计内华达州 24 小时分辨率 RM 浓度。
The Teledyne Advanced Pollution Instrumentation (TAPI) model 602 BetaPlus particulate system provides nondestructive analysis of particulate matter (PM2.5) mass concentration. This instrument was used to determine if measurements made with cation exchange membranes (CEM) were comparable to standard methods, the β attenuation method at two locations in Reno, NV and an environmental β attenuation method and gravimetric method at Great Basin National Park, NV. TAPI PM2.5 CEM measurements were statistically similar to the other three PM2.5 methods. Once this was established, the second objective, a destructive method for measurement of reactive mercury (RM = gaseous oxidized and particulate bound Hg), was tested. Samples collected at 16.7 L per min (Lpm) for 24 h on CEM from the TAPI were compared to those measured by the University of Nevada, Reno-Reactive Mercury Active System (UNRRMAS, 1 Lpm) CEM and a Tekran 2537/1130/1135 system (7 Lpm). Given the use of CEM in the TAPI and UNRRMAS, we hypothesized that both should collect RM. Due to the high flow rate and different inlets, TAPI data were systematically lower than the UNRRMAS. Correlation between RM concentrations demonstrated that the TAPI may be used to estimate 24 h resolution RM concentrations in Nevada.