为改善直接进样法中高浓度盐对进样口、色谱柱和检测器的污染,降低检出限。浩瀚色谱建立了顶空气相色谱法测定空气和废气中乙醛的方法,并对色谱条件和顶空进样条件进行了优化。结果:该方法的检出限1.0μg,当采样体积为100 L时,方法检出浓度为0.01 mg/m3,室内相对标准偏差为1.6%~5.0%,加标回收率为95.2%~101.0%。结论:该方法有效地避免了直接进样法中高浓度盐对进样口、色谱柱乃至检测器的污染,并且大大降低了检出限,方法的可靠性和可操作性令人满意。
本标准适用于固定污染源有组织排放和无组织排放的乙醛测定。当采样条件为100L，进样条件为1μl时，乙醛的检出限为4×10-2mg/m3，乙醛的定量测定浓度范围为0.14mg/m3～30mg/m3。
名称：不锈钢填充柱
规格：2m*3mm
型号：20%PEG-20M/GCS880 AW DMCS
编号：20240812006
*高温度：240°C
应用：HJ/T 35-1999 固定污染源排气中乙醛的测定 气相色谱法
适用于安捷伦，岛津，赛默飞，瓦里安，布鲁克，PE，磐诺，天瑞，天美，北分瑞利，东西电子，福立
To improve the contamination of the injection port, chromatographic column, and detector by high concentration salts in direct injection method and reduce the detection limit. Haohan Chromatography has established a headspace gas chromatography method for the determination of acetaldehyde in air and exhaust gas, and optimized the chromatographic and headspace injection conditions. Result: The detection limit of this method is 1.0 μ g. When the sampling volume is 100 L, the detected concentration of the method is 0.01 mg/m3, the indoor relative standard deviation is 1.6%~5.0%, and the spiked recovery rate is 95.2%~101.0%. Conclusion: This method effectively avoids contamination of the injection port, chromatographic column, and even detector by high concentration salts in direct injection method, and greatly reduces the detection limit. The reliability and operability of the method are satisfactory.
This standard is applicable to the determination of acetaldehyde in organized and unorganized emissions from fixed pollution sources. When the sampling condition is 100L and the injection condition is 1 μ l, the detection limit of acetaldehyde is 4 × 10-2mg/m3, and the quantitative determination concentration range of acetaldehyde is 0.14mg/m3 to 30mg/m3.
Name: Stainless Steel Filled Column
Specification: 2m * 3mm
Model: 20% PEG-20M/GCS880 AW DMCS
Number: 20240812006
*High temperature: 240 ° C
Application: HJ/T 35-1999 Determination of Acetaldehyde in Fixed Source Exhaust Gas Gas Chromatography Method
Suitable for Agilent, Shimadzu, Thermo Fisher, Varian, Brooke, PE, Panno, Tianrui, Tianmei, Beifen Ruili, Dongxi Electronics, Fuli
滕州市浩瀚色谱仪器技术服务有限公司
电话：0632-5667636
传真：0632-5667636
手机：15562228838,13963221227
地址：山东滕州市平行路（商务部和技术部）
邮箱：wangxiaoying9@126.com
QQ:1404939462
联系人：王经理
网址：www.haohansepu.com