| FP(FilterPacks)法同时测定大气中的SO2和颗粒物 |
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| 引用本文： | 梁宝生,李金龙,王美蓉,唐孝炎. FP(FilterPacks)法同时测定大气中的SO2和颗粒物[J]. 环境科学研究, 1995, 8(1): 51-55 |
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| 作者姓名： | 梁宝生 李金龙 王美蓉 唐孝炎 |
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| 作者单位： | 北京大学技术物理系 北京 1000871 |
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| 摘 要： | 用二层采样头同时采集大气中的二氧化硫和颗粒物的方法。分别用国产玻璃纤维滤膜和中速定量滤纸，1％K2CO3－10％Gly溶液制作浸渍膜，两种浸渍膜现场采集二氧化硫的效率分别为99．4％和95．7％。通过降低碳酸钾溶液浓度(由25％降为1％)及使用强酸性阳离子交换树脂，大大降低了样品中碳酸根离子的浓度，减小了基体效应，提高了测定硫酸根离子的准确度和灵敏度。经测定，1％K2CO3－10％Gly溶液浸渍膜(90mm)对二氧化硫的采集容量为160 μg／cm2。试验结果表明，浸渍膜法和盐酸副玫瑰苯胺法测定大气中二氧化硫的结果相近，相对偏差为4．3％，两种方法测定二氧化硫浓度有着良好的线性关系(r＝0．993)
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| 关 键 词： | FiIterPacks法 二氧化硫 颗粒物 |
| 收稿时间： | 1994-07-11 |
Simultaneous Determination of Atmosphericsul fur Dioxide and Partculate with Filter Packs Method |
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| LIANG Bao-sheng,LI Jing-long,WANG Mei-rong and TANG Xiao-yan. Simultaneous Determination of Atmosphericsul fur Dioxide and Partculate with Filter Packs Method[J]. Research of Environmental Sciences, 1995, 8(1): 51-55 |
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| Authors: | LIANG Bao-sheng LI Jing-long WANG Mei-rong TANG Xiao-yan |
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| Affiliation: | Dept.of Technical Physics ,Peking Unzversity,Beijing 1000871 |
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| Abstract: | A method has been developed for simultaneous sampling of atmospheric sulfur dioxide andparticulate with 1%K2CO3-10%Gly impregnated filters which are made with domestic glass fiber fil-ters and medium quantitative fiIter paper,respectively. The efficiency to collect sulfur dioxide with these two filters is 99.4%and 95.7%,respectively. The matrix effect caused by carbonate has been reduced by decreasing the concentration of K2CO3(from 25%to 1%)and by using strong acidic posi-tive ion-exchange resin,and the accuracy and the sensitivity of to be determined have been greatly increased.The sampling capacity of sulfur dioxide of 1%K2CO3-10%Gly impregnated filter(90 mm )has been proved to be 160g/cm2. The standard deviation of determining ambient sulfurdioxide between impregnated and PRA methods is very low,only 4.3%。Correlation coefficient is 0.993. |
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| Keywords: | Filter packs method Sulfur dioxide Particulate |
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