氣體六通閥
氣體六通閥 詳細(xì)信息:
六通閥是氣相色譜儀的一種氣路附件,通常和定量管配合,作氣體進(jìn)樣閥使用。在氣體樣品進(jìn)樣量較大時(shí),它可使樣品定量準(zhǔn)確,數(shù)據(jù)重復(fù)性好。
在實(shí)際分析中由于樣品的氣、液、固、狀態(tài)不同,分析目的不同,要求不同,相應(yīng)的用于氣相色譜分析的進(jìn)樣方式也有所不同,而且進(jìn)樣系統(tǒng)種類繁多。應(yīng)用六通閥定體積進(jìn)樣就是其中的一種,其特點(diǎn)為操作簡(jiǎn)便、快速,測(cè)定結(jié)果準(zhǔn)確、,重現(xiàn)性小于0.5%,符合技術(shù)要求。
應(yīng)用實(shí)例:非甲烷總烴應(yīng)用
采用單一進(jìn)樣口六通閥進(jìn)樣, Porapak Q柱和空柱兩根填充柱及一個(gè)FID檢測(cè)器的氣相色譜法測(cè)定無(wú)組織大氣中甲醇、甲烷、總烴和非甲烷總烴,測(cè)定結(jié)果均符合大氣污染物綜合排放標(biāo)準(zhǔn)中無(wú)組織排放監(jiān)控標(biāo)準(zhǔn)要求。方法低檢出濃度分別為甲烷0.04 mg/m3,總烴0.04 mg/m3,非甲烷總烴0.06 mg/m3,甲醇2 mg/m3,且能保持良好的重復(fù)性,相對(duì)標(biāo)準(zhǔn)偏差均小于2%,滿足檢測(cè)的要求。該方法操作簡(jiǎn)單、靈敏且分離度好,具有較好的重現(xiàn)性和的準(zhǔn)確度。
材質(zhì):不銹鋼
定量環(huán):0.5ml,1ml
安裝簡(jiǎn)單,快捷
配置1.6mm,2mm,1/16, 3mm, 1/8接口
使用溫度:常溫/高溫
安裝口周圍有標(biāo)識(shí)的鋼印:1,2,3,4,5,6
氣體六通閥 圖片:






Gas six-way valve
Six-way gas valve Details:
The six-port valve is a gas path accessory of the gas chromatograph. It is usually used as a gas sampling valve in co
njunction with a quantitative tube. When the gas sample injection volume is large, it can make the sample quantitative accurately and the data repeatability is good.
In actual analysis, due to the different gas, liquid, solid and state of the samples, different analysis purposes and different requirements, the correspo
nding sampling methods for gas chromatography analysis are also different, and there are many kinds of sampling systems. The application of a six-port valve for fixed-volume sampling is one of them. It is characterized by simple and fast operation, accurate and reliable measurement results, and reproducibility of less than 0.5%, which meets the technical requirements.
Application example: non-methane total hydrocarbon application
A single-inlet six-port valve was used for sampling, Porapak Q column and empty column two packed columns and a FID detector were used to determine methanol, methane, total hydrocarbons and non-methane total hydrocarbons in unorganized atmosphere by gas chromatography. The results were all Meet the requirements of the unorganized emission mo
nitoring standard in the comprehensive emission standard of air pollutants. The lowest detected co
ncentrations of the method were 0.04 mg/m3 for methane, 0.04 mg/m3 for total hydrocarbons, 0.06 mg/m3 for non-methane total hydrocarbons, and 2 mg/m3 for methanol. The method can maintain good repeatability, and the relative standard deviations are all less than 2%. , Meet the requirements of testing. The method is simple, sensitive and has good resolution, with good reproducibility and reliable accuracy.
Material: Stainless steel
Quantitative loop: 0.5ml, 1ml
Simple and fast installation
Co
nfiguration 1.6mm, 2mm, 1/16, 3mm, 1/8 interface
Operating temperature: normal temperature/high temperature
There are marked steel seals around the installation port: 1, 2, 3, 4, 5, 6
Gas six-way valve Picture:
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