HJ/T 33-1999 固定污染源排氣中甲醇的測(cè)定?方法中所使用的?石墨化碳黑填充柱?
該方法原理是利用載氣（高純氮?dú)猓悠吠ㄟ^填充柱，甲醇等組分在柱中分離后，進(jìn)入氫火焰離子化檢測(cè)器（FID） 進(jìn)行檢測(cè)，通過保留時(shí)間定性，峰高或峰面積定量。
適用范圍：適用于固定污染源有組織排放（如煙囪、管道）和無組織排放（如車間邊界）中甲醇的測(cè)定。
方法性能：標(biāo)準(zhǔn)中提到，當(dāng)進(jìn)樣量為1.0 ml時(shí)，方法的檢出限為2 mg/m3，定量測(cè)定范圍一般為5.0 - 104 mg/m3。另有應(yīng)用表明其最低檢出濃度可達(dá)0.2 mg/m36，或0.07 mg/m3（通過富集采樣后）。
樣品處理：通常采用硅膠管吸附或蒸餾水/去離子水吸收的方式采集廢氣中的甲醇，再經(jīng)熱解吸或直接進(jìn)樣分析。
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名稱：甲醇專用填充柱
型號(hào)：5%Carbowax20M ?Carbopack B
規(guī)格：2m*3mm，80-120目
浩瀚色譜(山東)應(yīng)用技術(shù)開發(fā)有限公司，研制生產(chǎn)的《固定污染源排氣中甲醇的測(cè)定島津色譜柱》柱效高，分離好，峰型對(duì)稱，用標(biāo)準(zhǔn)加入法測(cè)得回收率在101％～103％之間，測(cè)定值的相對(duì)標(biāo)準(zhǔn)偏差（n=5）均小于2％，結(jié)果滿意。
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適用于：
安捷倫490在線/便攜，4890,5890,6890,7820,7890,8860,8890
島津GC-14C，GC-2010，GC-2014，GC-2030
賽默飛1310,1300,1610,1600
瓦里安3800系列
布魯克PE580,590,680,690
磐諾A90，福立GC9790，華愛，天瑞，天美，GC7900，川儀，北分瑞利，東西電子，魯南瑞虹，捷島/科曉
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The graphitized carbon black packed column used in the determination method of methanol in fixed pollution source exhaust gas HJ/T 33-1999
The principle of this method is to use a carrier gas (high-purity nitrogen) to pass the sample through a packed column. After separating components such as methanol in the column, it enters a hydrogen flame ionization detector (FID) for detection. Qualitative analysis is performed by retention time, and quantitative analysis is performed by peak height or peak area.
Scope of application: Suitable for the determination of methanol in organized emissions (such as chimneys and pipelines) and unorganized emissions (such as workshop boundaries) from fixed pollution sources.
Method performance: As mentioned in the standard, when the injection volume is 1.0 ml, the detection limit of the method is 2 mg/m 3, and the quantitative determination range is generally 5.0-104 mg/m 3. Another application shows that its minimum detectable concentration can reach 0.2 mg/m 3 6, or 0.07 mg/m 3 (after enrichment sampling).
Sample processing: Methanol in exhaust gas is usually collected by adsorption with silicone tubing or absorption with distilled/deionized water, and then analyzed by thermal desorption or direct injection.
Name: Methanol specific packed column
Model: 5% Carbowax20M Carbopack B
Specification: 2m * 3mm, 80-120 mesh
Haohan Chromatography (Shandong) Application Technology Development Co., Ltd. has developed and produced the Shimadzu chromatography column for the determination of methanol in exhaust gas from fixed pollution sources. The column has high efficiency, good separation, and symmetrical peak shapes. The recovery rate measured by standard addition method is between 101% and 103%, and the relative standard deviation (n=5) of the measured values is less than 2%. The results are satisfactory.
Suitable for:
Agilent 490 online/portable, 48905890689088608890
Shimadzu GC-14C, GC-2010, GC-2014, GC-2030
Thermo Fisher Scientific 1310130016101600
Varian 3800 Series
Brooke PE580590680690
Panno A90, Fuli GC9790, Huaai, Tianrui, Tianmei, GC7900， Chuanyi, Beifen Ruili, Dongxi Electronics, Lunan Ruihong, Jiedao/Kexiao
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