Simultaneous determination of atmospheric sulfur and nitrogen oxides using a battery-operated portable filter pack sampler.
Simultaneous determination of atmospheric sulfur and nitrogen oxides using a battery-operated portable filter pack sampler.
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使用电池供电的便携式过滤包采样器同时测定大气中的硫和氮氧化物。
DOI：
10.1039/b512217a
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发表时间：
2006
期刊：
影响因子：
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通讯作者：
K. Inubushi
中科院分区：
文献类型：
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作者：
Mirai Watanabe;T. Takamatsu;M. Koshikawa;K. Sakamoto;K. Inubushi
我们开发了一种方法来分析大气SO(x)(颗粒SO(4)（2-)+气态SO(2)）和NO(x) （NO + NO(2)）同时使用电池供电便携式过滤包采样器。使用过滤包法测定NO(x)是新的。SO(x)和NO(x)分别在Na(2)CO(3)过滤器和PTIO（2-苯基-4,4,5,5-四甲基咪唑啉-3-氧化物-1-氧）+ TEA（三乙醇胺）过滤器（6叠片）上收集。然后用水溶液提取被过滤器捕获的污染物，得到的提取物被预清洗（例如去除PTIO），并通过离子色谱分析硫酸盐和亚硝酸盐。从标准污染气体中回收SO(2)和NO(x)，并检查了现场数据与其他仪器方法的一致性，以评估我们的方法。SO(x)和NO(x)可准确分析，测定限分别为0.2 ppbv和1.0 ppbv（日平均浓度）。该采样器可在山区或偏远地区检测SO(x)和NO(x)浓度，无需供电。
We developed a method to analyze atmospheric SO(x) (particulate SO(4)(2-)+ gaseous SO(2)) and NO(x) (NO + NO(2)) simultaneously using a battery-operated portable filter pack sampler. NO(x) determination using a filter pack method is new. SO(x) and NO(x) were collected on a Na(2)CO(3) filter and PTIO (2-phenyl-4,4,5,5-tetramethylimidazoline-3-oxide-1-oxyl) + TEA (triethanolamine) filters (6 piled sheets), respectively. Aqueous solutions were then used to extract pollutants trapped by the filters and the resulting extracts were pre-cleaned (e.g. elimination of PTIO) and analyzed for sulfate and nitrite by ion chromatography. Recoveries of SO(2) and NO(x) from standard pollutant gases and consistency of the field data with those from other instrumental methods were examined to evaluate our method. SO(x) and NO(x) could be analyzed accurately with determination limits of 0.2 ppbv and 1.0 ppbv (as daily average concentrations), respectively. The sampler can determine SO(x) and NO(x) concentrations at mountainous or remote sites without needing an electric power supply.