加工定制:是 | 品牌:翔鹰技术 | 型号:GC7990DFPD |
测量范围:ppm | 测量对象:硫化物 | 控温范围:400℃ |
功率:1800w | 尺寸:400mm | 重量:10kg |
液化气:天然气 | 硫化物:芝麻香白酒 | 汽油:含氧化合物 |
Flame photometric detector (FPD) is a kind of high sensitive phosphide selective determination of sulfur gas chromatographic detector. But when the FPD sulfur selectivity is not good, when measuring low concentration sulfur sensitivity is not high, and poor linearity. Therefore, when the sample contains a lot of hydrocarbon, must the hydrocarbon and sulfur with chromatographic column for complete separation, selective (S/C) at this time is 10 ~ 4, otherwise it will be affected by the serious interference of hydrocarbons, even signals disappear entirely.
Su xiang ying analysis technology co., LTD. Has developed GC7990DFPD double flame flame photometric detector (DFPD) has two flame, the flame can be hydrocarbon and sulfide, phosphide burning down into simple combustion product; On fire with rich hydrogen flame properties, can continue to burn down the flame combustion products, make the sulfide, phosphide, signal detection, and hydrocarbon combustion product carbon dioxide and water in rich hydrogen flame no signal, therefore can eliminate the interference of the hydrocarbon.
火焰光度检测器(FPD)是一种高灵敏度高选择性的测定硫磷化物的气相色谱检测器。但是FPD测硫时的选择性并不好,在测低浓度硫化物时灵敏度也不高,且线性较差。因此,当试样中含有大量烃类时,必须用色谱柱把烃类与硫化物完全分离,此时的选择性(S/C)为10~4,否则就会受到烃类的严重干扰,甚至信号完全消失。
滕州市翔鹰分析技术有限公司研发出GC7990DFPD 双火焰型火焰光度检测器(DFPD)具有上下两个火焰,下火焰可将烃类及硫化物、磷化物燃烧分解成简单的燃烧产物;上火焰具有富氢焰性质,可继续燃烧下火焰的燃烧产物,使硫化物、磷化物发光,产生检测信号,而烃类的燃烧产物二氧化碳、水等在富氢焰中无信号,因此可以消除烃类的干扰。