GB 338-2004工業(yè)用甲醇
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本標(biāo)準(zhǔn)規(guī)定了工業(yè)用甲醇的要求、試驗(yàn)方法、檢驗(yàn)規(guī)則及標(biāo)志、包裝、運(yùn)輸、貯存和安全等。
本標(biāo)準(zhǔn)適用于以煤、焦油、天然氣、輕油、重油為原料合成的工業(yè)用甲醇。該產(chǎn)品主要用于化學(xué)工業(yè)、醫(yī)藥工業(yè)、農(nóng)藥行業(yè)，也可作為燃料使用。
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乙醇是甲醇的同系物，其物理化學(xué)性質(zhì)與甲醇很相近，加之精細(xì)甲醇的純度很高（99．96％以上），主峰很寬，容易掩蓋乙醇峰，而且在多數(shù)固定液上，乙醇峰是在甲醇峰之后流出，受主峰影響嚴(yán)重，這就使得甲醇中微量乙醇的分析成為一個(gè)難題。國內(nèi)現(xiàn)在很多企業(yè)都采用GB338—2004標(biāo)準(zhǔn)進(jìn)行此項(xiàng)分析。
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國標(biāo)中采用6米的山li醇填充柱，完成一次分析需要30min左右，效率低，無法滿足生產(chǎn)檢測的需要，使用受限。
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浩瀚色譜（山東）應(yīng)用技術(shù)開發(fā)有限公司，研制《GB338工業(yè)用甲醇測定升級氣相色譜法》，對國標(biāo)進(jìn)行升級，完善，增加切割/反吹系統(tǒng)，把主成分甲醇切出去，分析時(shí)間僅需標(biāo)準(zhǔn)的1/4，效率高，滿足工業(yè)大規(guī)模生產(chǎn)檢測的需要，在安捷倫，島津，賽默飛，瓦里安，布魯克，PE上，測試結(jié)果滿意。
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浩瀚色譜，提供詳細(xì)的分析方案
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名稱：填充柱
固定相：專用
規(guī)格：4m*1/8
型號(hào)：HH-Methanol-IV
應(yīng)用：GB_338-2004_工業(yè)用甲醇中微量乙醇的測定
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適用于：
安捷倫7890,7820,8860,8890,6890,5890,4890，在線，實(shí)驗(yàn)室，便攜式
島津GC-14C，GC-2010，GC-2014，GC-2018，GC-2030
賽默飛1310,1300,1600,1610
瓦里安3800系列
布魯克，PE580,590,680,690,磐諾，川儀，北分瑞利，東西電子，天瑞，天美，科創(chuàng)，華愛，捷島，福立，魯南瑞虹
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GB 338-2004 Industrial Methanol
This standard specifies the requirements, test methods, inspection rules, labeling, packaging, transportation, storage, and safety of industrial methanol.
This standard is applicable to industrial methanol synthesized from coal, tar, natural gas, light oil, and heavy oil as raw materials. This product is mainly used in the chemical industry, pharmaceutical industry, pesticide industry, and can also be used as fuel.
Ethanol is a homologue of methanol, and its physical and chemical properties are very similar to methanol. In addition, fine methanol has a high purity (over 99.96%) and a wide main peak, which easily masks the ethanol peak. Moreover, on most stationary liquids, the ethanol peak flows out after the methanol peak, which is severely affected by the main peak. This makes the analysis of trace amounts of ethanol in methanol a difficult problem. Many domestic enterprises now adopt the GB338-2004 standard for this analysis.
The national standard uses a 6-meter Shan Li alcohol packed column, which takes about 30 minutes to complete one analysis, with low efficiency and cannot meet the needs of production testing, limiting its use.
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Haohan Chromatography (Shandong) Application Technology Development Co., Ltd. has developed the "GB338 Industrial Methanol Determination Upgrade Gas Chromatography Method", which has upgraded and improved the national standard by adding a cutting/blowback system to remove the main component methanol. The analysis time only requires 1/4 of the standard, and the efficiency is high, meeting the needs of large-scale industrial production testing. The test results have been satisfactory on Agilent, Shimadzu, Thermo Fisher Scientific, Varian, Brooke, and PE.
Vast chromatography provides detailed analysis solutions
Name: Filler Column
Fixed phase: Dedicated
Specification: 4m * 1/8
model: HH-Methanol-IV
Application: GB_338-2004_ Determination of Trace Ethanol in Industrial Methanol
Applicable to:
Agilent 7890782088608890689059058904890, online, laboratory, portable
Shimadzu GC-14C, GC-2010，GC-2014，GC-2018，GC-2030
Thermo Fisher Scientific 1310130016001610
Varian 3800 Series
Brooke, PE580, 590680690, Panno, Chuanyi, Beifen Ruili, Dongxi Electronics, Tianrui, Tianmei, Kechuang, Huaai, Jiedao, Fuli, Lunan Ruihong
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