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| 1 | 深圳市大气PM_(2.5)来源解析显示文摘为识别和量化深圳市大气PM_(2.5)的污染来源,2014年3, 6, 9, 12月分别在5个站点采集PM_(2.5)的膜样品并进行质量浓度及组分分析,利用正向矩阵因子解析(PMF)模型对其主要来源和时空变化规律进行了解析.结果表明,2014年深圳市PM_(2.5)年均浓度为35.7μg/m^3,其中机动车源、二次硫酸盐生成、二次有机物生成和二次硝酸盐生成是最主要的来源,质量浓度贡献比例分别为27%、21%、12%和10%;地面扬尘、生物质燃烧源、远洋船舶源、工业源、海洋源、建筑尘和燃煤源贡献比例达2%~6%.各个源贡献的时空变化特征表明,二次硫酸盐生成、生物质燃烧源、二次有机物生成、工业源、远洋船舶源和海洋源显示出明显的区域源特征,机动车源、二次硝酸盐生成、燃煤源、地面扬尘和建筑尘具有显著的本地源特征. | 孙天乐 邹北冰 黄晓锋 申航印 戴静 何凌燕 | 2019 | 中国环境科学2019，39，1： | 25 |
| 2 | 2008北京残奥会期间大气黑碳气溶胶污染特征显示文摘利用单颗粒黑碳光度计(SP2)对2008年残奥会期间北京市黑碳(BC)气溶胶的质量浓度、粒径分布及单颗粒混合态进行连续在线观测.结果表明:观测期间BC浓度均值为1.65μg/m3,低于往年同期水平;质量粒径分布呈单峰型,峰值位于207nm;内混态BC比例平均为56.1%,高于其他国内外城市,说明本地源排放贡献相对较小.随大气边界层高度及本地源排放变化,BC浓度在上午8:00和午夜0:00出现2个峰值,内混态BC比例日变化趋势与之相反.风向风速分析表明,残奥会期间来自五环外未限行区域的机动车排放对市区BC浓度有明显影响. | 孙天乐 何凌燕 曾立武 黄晓锋 | 2012 | 中国环境科学2012，32，12： | 11 |
| 3 | 鹤山气溶胶光学性质和单颗粒化学组分的研究显示文摘2014年10~11月在广东省鹤山大气超级站利用单颗粒气溶胶质谱仪(SPAMS)、积分式浊度仪和黑碳仪在线观测了单颗粒气溶胶的化学组成与气溶胶光学特征.采用Art-2a分类法将单颗粒分为9类:有机碳-硫酸盐/硝酸盐颗粒(OC-Sulfate/Nitrate)、元素碳-硫酸盐/硝酸盐颗粒(EC-Sulfate/Nitrate)、元素碳有机碳-硫酸盐/硝酸盐颗粒(ECOC-Sulfate/Nitrate)、高分子有机碳颗粒(HOC)、海盐颗粒(Sea-salt)、硅酸盐颗粒(Si-rich)、左旋葡聚糖颗粒(Lev)、钾-硫酸盐/硝酸盐颗粒(K-Sulfate/Nitrate)、金属颗粒(Metal).从清洁期到灰霾期气溶胶的吸收系数、散射系数和单次散射反照率(SSA)显著升高,气溶胶消光能力增强,同时EC-Sulfate/Nitrate颗粒占比从34.8%降至31%,OC-Sulfate/Nitrate颗粒从9.9%增加至23.6%,K-Sulfate/Nitrate二次颗粒从8.5%增加至14%,且灰霾期OC-Sulfate/Nitrate颗粒与硫酸盐、硝酸盐和铵盐的混合程度增强,因此老化的OC-Sulfate/Nitrate颗粒和二次组分颗粒对气溶胶消光系数的增加有重要贡献.在大气相对湿度从50%增加到70%以上的过程中,气溶胶散射系数和吸收系数升高,消光系数由326.1Mm^-1增加到362.9Mm^-1,SSA有所下降,PM2.5质量消光效率由4.98增加到5.99,EC-Sulfate/Nitrate颗粒和K-Sulfate/Nitrate二次颗粒占比下降,而OC-Sulfate/Nitrate颗粒的占比由7.79%增加到14.29%,且OC-Sulfate/Nitrate颗粒中富含硫酸盐、硝酸盐和铵盐,表明高相对湿度下老化的OC-Sulfate/Nitrate颗粒数目增多对气溶胶消光系数的增强有重要影响. | 马乾坤 成春雷 李梅 陈多宏 周洋 吴梦曦 周振 | 2019 | 中国环境科学2019，39，7： | 10 |
| 4 | Source apportionment of PM_(2.5)light extinction in an urban atmosphere in China显示文摘Haze in China is primarily caused by high pollution of atmospheric fine particulates(PM2.5).However, the detailed source structures of PM2.5 light extinction have not been well established, especially for the roles of various organic aerosols, which makes haze management lack specified targets. This study obtained the mass concentrations of the chemical compositions and the light extinction coefficients of fine particles in the winter in Dongguan, Guangdong Province, using high time resolution aerosol observation instruments. We combined the positive matrix factor(PMF) analysis model of organic aerosols and the multiple linear regression method to establish a quantitative relationship model between the main chemical components, in particular the different sources of organic aerosols and the extinction coefficients of fine particles with a high goodness of fit(R^2= 0.953). The results show that the contribution rates of ammonium sulphate,ammonium nitrate, biomass burning organic aerosol(BBOA), secondary organic aerosol(SOA) and black carbon(BC) were 48.1%, 20.7%, 15.0%, 10.6%, and 5.6%, respectively. It can be seen that the contribution of the secondary aerosols is much higher than that of the primary aerosols(79.4% versus 20.6%) and are a major factor in the visibility decline. BBOA is found to have a high visibility destroying potential, with a high mass extinction coefficient, and was the largest contributor during some high pollution periods. A more detailed analysis indicates that the contribution of the enhanced absorption caused by BC mixing state was approximately 37.7% of the total particle absorption and should not be neglected. | Zijuan Lan Bin Zhang Xiaofeng Huang Qiao Zhu Jinfeng Yuan Liwu Zeng Min Hu Lingyan He | 2018 | Journal of Environmental Sciences2018，30，1： | 7 |
| 5 | 喀什地区PM_(10)输送路径及潜在源区显示文摘基于HYSPLIT模型和2019年9月至2020年8月喀什地区大气颗粒物逐时数据,利用聚类分析、潜在源贡献因子法(PSCF)和浓度权重轨迹法(CWT)分析喀什地区四季PM10传输路径与潜在源区,揭示研究期间喀什地区不同季节PM10的潜在源分布及其贡献水平。结果表明:喀什地区PM_(10)、PM_(2.5)年均值分别为237.3±268.3、89.3±82.3μg·m^(-3),大气颗粒物以PM10为主;喀什地区气流输送路径主要来自中亚西风气流,其次是来自中国新疆南部;PM10秋季主要贡献源区分布在中亚部分地区以及中国新疆南部区域,贡献水平为250—450μg·m^(-3);冬季主要贡献源区与秋季相似,贡献水平为150—300μg·m^(-3);春季重点贡献源区主要分布在新疆南部塔克拉玛干沙漠区域,贡献水平为250—500μg·m^(-3);夏季主要贡献源区与春季相似,贡献水平为150—250μg·m^(-3)。喀什地区重点防范应是塔克拉玛干沙漠沙尘气溶胶的影响,其次是中亚西风气流携带的大气颗粒物远距离输送。 | 李汉林 何清 赵权威 | 2021 | 中国沙漠2021，41，5： | 4 |
| 6 | Atmospheric extinction properties in Shenyang,China显示文摘Atmospheric visibility impairment due to human activities is becoming increasingly significant in metropolitan Shenyang,China.In this study,hourly data of relevant factors throughout the year 2010 in Shenyang were used to evaluate the local atmospheric extinction properties.The results show that the average coefficient of total extinction and aerosol single-scattering albedo in 2010 were 622.72 Mm^(-1)and 0.87,respectively,values that are characteristic of the 'municipal pollution type'.Visibility is most impaired during winter and especially in January.The coefficient of total extinction exhibits a single daily cycle with a maximum at 5-6 am and a minimum at 3 pm.The mean extinction contributions of the constituents,from high to low,were particle scattering(87.49%),particle absorption,gas absorption,and gas scattering.The extinction contribution of gas molecules was little more than 4.5%,far smaller than that of particles.Scattering by particles was the main contributor to extinction,especially in the morning and around midnight. | Ningwei Liu Yanjun Ma Jianzhong Ma Yangfeng Wang Suying Yang Liguang Li | 2015 | Particuology2015，13，1： | 3 |
| 7 | Characterization of aerosol optical properties, chemical composition and mixing states in the winter season in Shanghai, China显示文摘Physical and chemical properties of ambient aerosols at the single particle level were studied in Shanghai from December 22 to 28,2009.A Cavity-Ring-Down Aerosol Extinction Spectrometer(CRD-AES)and a nephelometer were deployed to measure aerosol light extinction and scattering properties,respectively.An Aerosol Time-of-Flight Mass Spectrometer(ATOFMS)was used to detect single particle sizes and chemical composition.Seven particle types were detected.Air parcels arrived at the sampling site from the vicinity of Shanghai until mid-day of December 25,when they started to originate from North China.The aerosol extinction,scattering,and absorption coefficients all dropped sharply when this cold,clean air arrived.Aerosol particles changed from a highly aged type before this meteorological shift to a relatively fresh type afterwards.The aerosol optical properties were dependent on the wind direction.Aerosols with high extinction coefficient and scattering Angstrom exponent(SAE)were observed when the wind blew from the west and northwest,indicating that they were predominantly fine particles.Nitrate and ammonium correlated most strongly with the change in aerosol optical properties.In the elemental carbon/organic carbon(ECOC)particle type,the diurnal trends of single scattering albedo(SSA)and elemental carbon(EC)signal intensity had a negative correlation.We also found a negative correlation(r=-0.87)between high mass-OC particle number fraction and the SSA in a relatively clean period,suggesting that particulate aromatic components might play an important role in light absorption in urban areas. | Yong Tang Yuanlong Huang Ling Li Hong Chen Jianmin Chen Xin Yang Song Gao Deborah S.Gross | 2014 | Journal of Environmental Sciences2014，26，12： | 3 |
| 8 | Characteristics of black carbon aerosol in Jiaxing,China during autumn 2013显示文摘We conducted measurements of black carbon(BC) aerosol in Jiaxing,China during autumn from September 26 to November 30,2013.We investigated temporal and diurnal variations of BC,and its correlations with meteorological parameters and other major pollutants.Results showed that hourly mass concentrations of BC ranged from 0.2 to 22.0 μg/m^3,with an average of 5.1 μg/m^3.The diurnai variation of BC exhibited a bimodal distribution,with peaks at 07:00 and 18:00.The morning peak was larger than the evening peak.The mass percentages of BC in PM_(2.5) and PM_(10) were 7.1%and 4.8%,respectively.The absorption coefficient of BC was calculated to be 44.4 Mm^(-1),which accounted for 11.1%of the total aerosol extinction.BC was mainly emitted from local sources in southwestern Jiaxing where BC concentrations were generally greater than 11 μg/m^3 during the measurement period.Correlation analysis indicated that the main sources of BC were motor vehicle exhaust,and domestic and industrial combustion. | Lijuan Shen Li Li Sheng Lu Xiaohan Zhang Jie Liu Junlin An Guojun Zhang Bo Wu Fei Wang | 2015 | Particuology2015，13，3： | 2 |
| 9 | 低流速废气中两种颗粒物测定方法的对比分析显示文摘现行固定源废气采样中要求等速采样跟踪率偏差不能大于±10%,当废气流速低于5 m/s时,跟踪率无法满足这一要求;固定流速采样可在低流速下,满足颗粒物采样对采气体积的要求,从而确保测定结果的准确性。通过在烟气低流速条件下,对两种不同方法测定废气中颗粒物的比较,发现固定流速测和等速流速测定存在一定的差异。研究结果表明,在低流速下,固定流速测定结果高于等速流速测定结果;同时,不同烟气低流速下,固定流速所测定的结果偏差不大。 | 李维军 姬广军 杨香林 张兴瑶 景一峰 | 2018 | 新疆环境保护2018，40，2： | 1 |
| 10 | Comparative Analysis on Two Kinds of Measurement Methods of Particulate Matters in Waste Gas of Low Velocity显示文摘In the current waste gas sampling of fixed source,it is required that deviation of tracking rate of constant velocity sampling should not be more than 10%.When flow rate of the waste gas is less than 5 m/s,the tracking rate can not meet this requirement.The sampling of fixed velocity can meet the requirement of particulate matter sampling on gas collection volume at low velocity.Through the comparison of two different methods for the determination of particulate matter in waste gas under the low flow velocity of flue gas,it was found that there were some differences between the fixed velocity measurement and the constant velocity measurement.The results showed that measurement result of the fixed velocity was higher than that of constant velocity measurement under low velocity.At the same time,the deviation of fixed velocity measurement was not obvious under different low velocity. | Li Weijun Ji Guangjun Yang Xianglin Zhang Xingyao Jing Yifeng | 2019 | Meteorological and Environmental Research2019，10，5： | 0 |
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