空气中总烃和非甲烷总烃分析气相色谱�?参数-价格-中国粉体罐�/title>

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$(this).css({"color":"#1479d7","border-bottom-color":"#1479d7"}); }); }); </script>  <div class="cpjj"> 空气中总烃和非甲烷总烃分析气相色谱�?/span>应用领域９�/span>环境检浊�/span>符合标准９�/span>《空气和废气监测方法《�/span>(第四片�/span>)＋�/span>GB/T15263《环境空气总烃的测� 气相色谱法《�/span>HJ/38 -1999《固定污染源排气中非甲烷总烃的测定气相色谱法《�/span>一�?/span>前言非甲烷烃＇�/span>NMHC）通常是指除甲烷以外所有可会发的碳氢化合物，又称非甲烷总烃。大气中皃�/span>NMHC超过一定浓度，对人体健康有害外，还能产生光化学烟雾，对环境和人类造成危害、�/span>我国《大气无言物综合排放标准》（GB16927-1996� 的非甲烷总烃的厂界浓度标准为5mg /m3，北分三谰�/span>公司根据《空气和废气监测方法》第四版中规定，采用十通阀一次进样双柱并联单FID监测的流程优化方案，满足总烃的监测要求。少检出浓度为0.05mg/m3、�/span>二�?/span>该分析方法的特点９�/span>協�/span>FID配置，消除双FID，因FID的灵敏度的差异性引起误差。双填充柱并联，十通阀进样实现一次进样，同时分析总烃和甲烷、�/span>三�?/span>实验仪器GC9860气相色谱仪（北分三谱）；BF-4除烃仪（北分三谱（�/span>;四�?/span>试验过程4.1样品处理过程样品处理过程参照《空气和废气监测方法》（第四版）方法一。采�?/span>100ml玻璃注射器，现场采样后密封注射器、�/span>4.2色谱条件柱温９�/span>50� 检测器温度９�/span>150� 进样器温度：150� 进样量：1ml柱流量：20ml/min4.3定性分枏�/span>样品进入总烃分析柱，只出一个总烃峰，样品中其他组分不能分开；样品进入甲烷分析柱，可以将甲烷和其他组分分开、�/span>4.4定量分析以甲烷为标准气，采用面积外标法定量，结果以甲烷计、�/span>五�?/span>实验结果5.1系统适用性试骋�/span>采用5��mol/mol＇�/span>VN）甲烷标准气进行分析，结果见�?/span>15.2标准曲线采用100ml玻璃注射器，高纯氮气逐级稀释的方法配置不同浓度９�/span>5/10/20/50/100��mol/mol甲烷标准气，分别去适量气体标气进样分析，以峰面积与对应的标准气浓度做标准曲线。按上述色谱条件分析，得如下标准曲线图：5.3脱烃空气分析囟�/span>O2�?/span>FID的响应对总烃分析有正干扰，需要采用脱烃的空气做为空白，实际样品总烃需要扣除空气的干扰。脱烃空气分析见图四。定量结果见�?/span>25.4空气样品分析�?/span>10ml玻璃注射器吸取试验室内空气，诸如气相色谱进行分析，谱图见国�/span>5�?次重复性分析见�?/span>3总烃的定量重复性为2.04%，甲烷的定量重复性为1.74%，符合定量检测方法的要求。非甲烷总烃=总烃-空气空白-甲烷=4.60-1.74-2.40=0.45��mol/mol卲�/span>0.32/m3结论采用本文描述方法可以满足空气中总烃和非甲烷总烃的测试，符合国家标准要求，少检测浓度可以达�?/span>0.05mg/m3仪器配置<table cellspacing="0" cellpadding="2" border="1" bordercolor="#f2f2f2" width="100%"><tbody><tr><td>序号</td><td>名称</td><td>规格型号</td><td>数量</td><td>单位</td><td>备注</td></tr><tr><td>1</td><td>气相色谱�?/span></td><td>GC-9860</td><td>1</td><td>�?/span></td><td>北分三谱</td></tr><tr><td>2</td><td>氢气发生�?/span></td><td>BF-300E</td><td>1</td><td>�?/span></td><td>北分三谱</td></tr><tr><td>3</td><td>空气发生�?/span></td><td>BF-2L</td><td>1</td><td>�?/span></td><td>北分三谱</td></tr><tr><td>4</td><td>氮气+减压阀</td><td>40卆�/span></td><td>1</td><td>瓵�/span></td><td>北分三谱</td></tr><tr><td>5</td><td>标气+减压阀</td><td>8卆�/span></td><td>1</td><td>瓵�/span></td><td>北分三谱</td></tr><tr><td>6</td><td>除烃�?/span></td><td>BF-4</td><td>1</td><td>�?/span></td><td>北分三谱</td></tr><tr><td>7</td><td>十通阀</td><td>进口</td><td>1</td><td>奖�/span></td><td></td></tr><tr><td>8</td><td>不锈钢分析柱</td><td>3M</td><td>2</td><td>�?/span></td><td>北分三谱</td></tr><tr><td>9</td><td>色谱工作竘�/span></td><td>N2000</td><td>1</td><td>奖�/span></td><td>浙大</td></tr><tr><td>10</td><td>玻璃注射�?/span></td><td>100ml</td><td>10</td><td>�?/span></td><td>北分三谱</td></tr><tr><td>11</td><td>玻璃注射�?/span></td><td>10ml</td><td>10</td><td>�?/span></td><td>北分三谱</td></tr><tr><td>12</td><td>气体取样袊�/span></td><td>1L</td><td>10</td><td>�?/span></td><td>北分三谱</td></tr><tr><td>13</td><td>电脑+打印朹�/span></td><td>品牌</td><td>1</td><td>奖�/span></td><td>HP</td></tr></tbody></table> </div>  <div class="cxd"> <div class="cxd_tit">创新炸�/div> 暂无数据� </div>  <div class="xgfa"> <div class="xgfa_tit"> <div> 相关方案 </div> </div> <div class="xgfa_box" style="display: block;"><div style="padding:10px;">暂无相关方案、�/div> </div> </div> <script> $(function(){ // 切换 $(".xgfa_tit_ul li").hover(function(){ $(".xgfa_tit_ul li").css({"color":"#4F5862","border-bottom-color":"transparent"}); 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