中国海峡西岸城市群冬季PM2.5和PM10中水溶性离子的污染特征研究

Abstract

<span style="font-family: 宋体; font-size: 9pt"><p style="margin: 0cm 0cm 0pt" class="MsoNormal"><a name="OLE_LINK2"></a><a name="OLE_LINK1"></a><span><span style="font-family: 宋体; font-size: 9pt">为了研究中国海峡西岸城市群冬季大气颗粒物水溶性离子的污染特征</span></span><span><span><span style="font-family: 'Verdana','sans-serif'; font-size: 9pt">,</span></span></span><span><span><span style="font-family: 宋体; font-size: 9pt">采集该区域</span></span></span><span><span><span style="font-family: 'Verdana','sans-serif'; font-size: 9pt">8 </span></span></span><span><span><span style="font-family: 宋体; font-size: 9pt">个城市共</span></span></span><span><span><span style="font-family: 'Verdana','sans-serif'; font-size: 9pt">14 </span></span></span><span><span><span style="font-family: 宋体; font-size: 9pt">个采样点位</span></span></span><span><span><span style="font-family: 'Verdana','sans-serif'; font-size: 9pt">(</span></span></span><span><span><span style="font-family: 宋体; font-size: 9pt">包含</span></span></span><span><span><span style="font-family: 'Verdana','sans-serif'; font-size: 9pt">1 </span></span></span><span><span><span style="font-family: 宋体; font-size: 9pt">个背景点</span></span></span><span><span><span style="font-family: 'Verdana','sans-serif'; font-size: 9pt">)</span></span></span><span><span><span style="font-family: 宋体; font-size: 9pt">的</span></span></span><span><span><span style="font-family: 'Verdana','sans-serif'; font-size: 9pt">PM_2.5 </span></span></span><span><span><span style="font-family: 宋体; font-size: 9pt">和</span></span></span><span style="font-family: 'Verdana','sans-serif'; font-size: 9pt">PM_2.5~10 </span><span style="font-family: 宋体; font-size: 9pt">样品</span><span style="font-family: 'Verdana','sans-serif'; font-size: 9pt">,</span><span style="font-family: 宋体; font-size: 9pt">采用离子色谱分析</span><span style="font-family: 'Verdana','sans-serif'; font-size: 9pt">F^-</span><span style="font-family: 宋体; font-size: 9pt">、</span><span style="font-family: 'Verdana','sans-serif'; font-size: 9pt">Cl^-</span><span style="font-family: 宋体; font-size: 9pt">、</span><span style="font-family: 'Verdana','sans-serif'; font-size: 9pt">NO^3-</span><span style="font-family: 宋体; font-size: 9pt">、</span><span style="font-family: 'Verdana','sans-serif'; font-size: 9pt">SO₄²-</span><span style="font-family: 宋体; font-size: 9pt">、</span><span style="font-family: 'Verdana','sans-serif'; font-size: 9pt">Na⁺</span><span style="font-family: 宋体; font-size: 9pt">、</span><span style="font-family: 'Verdana','sans-serif'; font-size: 9pt">K⁺</span><span style="font-family: 宋体; font-size: 9pt">、</span><span style="font-family: 'Verdana','sans-serif'; font-size: 9pt">NH₄⁺</span><span style="font-family: 宋体; font-size: 9pt">、</span><span style="font-family: 'Verdana','sans-serif'; font-size: 9pt">Ca²⁺</span><span style="font-family: 宋体; font-size: 9pt">和</span><span style="font-family: 'Verdana','sans-serif'; font-size: 9pt">Mg²⁺ 9 </span><span style="font-family: 宋体; font-size: 9pt">种水溶性离子的质量浓度</span><span style="font-family: 'Verdana','sans-serif'; font-size: 9pt">.</span><span style="font-family: 宋体; font-size: 9pt">结果表明</span><span style="font-family: 'Verdana','sans-serif'; font-size: 9pt">,</span><span style="font-family: 宋体; font-size: 9pt">海峡西岸城市群冬季大气颗粒物污染严重</span><span style="font-family: 'Verdana','sans-serif'; font-size: 9pt">,PM_2.5 </span><span style="font-family: 宋体; font-size: 9pt">和</span><span style="font-family: 'Verdana','sans-serif'; font-size: 9pt">PM₁₀ </span><span style="font-family: 宋体; font-size: 9pt">的日均值分别为</span><span style="font-family: 'Verdana','sans-serif'; font-size: 9pt">89.65,135.65&mu;g/m^3,PM_2.5 </span><span style="font-family: 宋体; font-size: 9pt">占</span><span style="font-family: 'Verdana','sans-serif'; font-size: 9pt">PM₁₀</span><span style="font-family: 宋体; font-size: 9pt">的</span><span style="font-family: 'Verdana','sans-serif'; font-size: 9pt">66.1%.</span><span style="font-family: 宋体; font-size: 9pt">城区水溶性无机离子主要集中在</span><span style="font-family: 'Verdana','sans-serif'; font-size: 9pt">PM_2.5 </span><span style="font-family: 宋体; font-size: 9pt">上</span><span style="font-family: 'Verdana','sans-serif'; font-size: 9pt">,</span><span style="font-family: 宋体; font-size: 9pt">其浓度分布存在空间差异</span><span style="font-family: 'Verdana','sans-serif'; font-size: 9pt">,</span><span style="font-family: 宋体; font-size: 9pt">温州地区水溶性无机离子浓度处于较高水平</span><span style="font-family: 'Verdana','sans-serif'; font-size: 9pt">;SO₄^2-</span><span style="font-family: 宋体; font-size: 9pt">、</span><span style="font-family: 'Verdana','sans-serif'; font-size: 9pt">NO₃^-</span><span style="font-family: 宋体; font-size: 9pt">和</span><span style="font-family: 'Verdana','sans-serif'; font-size: 9pt">NH₄⁺</span><span style="font-family: 宋体; font-size: 9pt">是水溶性无机离子的主要贡献者</span><span style="font-family: 'Verdana','sans-serif'; font-size: 9pt">,</span><span style="font-family: 宋体; font-size: 9pt">其占</span><span style="font-family: 'Verdana','sans-serif'; font-size: 9pt">PM_2.5 </span><span style="font-family: 宋体; font-size: 9pt">中水溶性离子总量的</span><span style="font-family: 'Verdana','sans-serif'; font-size: 9pt">79.6%~89.0%,</span><span style="font-family: 宋体; font-size: 9pt">占</span><span style="font-family: 'Verdana','sans-serif'; font-size: 9pt">PM₁₀</span><span style="font-family: 宋体; font-size: 9pt">的</span><span style="font-family: 'Verdana','sans-serif'; font-size: 9pt">74.2%~83.4%.</span><span style="font-family: 宋体; font-size: 9pt">由于受冬季季风的影响</span><span style="font-family: 'Verdana','sans-serif'; font-size: 9pt">,</span><span style="font-family: 宋体; font-size: 9pt">该区域非海盐离子对水溶性无机离子的贡献较大</span><span style="font-family: 'Verdana','sans-serif'; font-size: 9pt">.NO₃^-/SO₄²-</span><span style="font-family: 宋体; font-size: 9pt">的质量浓度比显示</span><span style="font-family: 'Verdana','sans-serif'; font-size: 9pt">,</span><span style="font-family: 宋体; font-size: 9pt">冬季海峡西岸城市群已处于机动车污染与燃煤污染并存的复合型污染状态。</span></p></span