rich flame
2.The characteristic concentration is2.4 × 10￣(-3)μg/mL for 20 ng/mL Lead after trapping for 1 min by the fuel-lean flametrapping and the pulsed fuel-rich flame discharge,It is 83 times more than the conven-tional FAAS.
3.Iron and calcium interfere spectrally when bismuth is determined with AAS. Our experiments showed that the interference could be eliminated by using a rich fuel flame, and furthermore, under the experimentally determined conditions more than 30 co-existing ions do not interfere with the determination of Bi at 306.8nm.
4.Investigation on supersonic combustion of kerosene using fuel-rich hot gas as pilot flame
6.The results show that the long-flame coal distributs in the six coal-rich regions, the lignite distribute in southwest and north central region and gas coal distribute in south central of eastern depression on plane.
7.Under general geological study of exploratory development of coalbed gas and underground gasification of coal bed in eastern depression of Liaohe basin, authors apply the basic principle of coal geology and the data of vitrinite reflectance and technical analysis of coal to ascertain that coal classification are dominantely the lignite, long-flame coal and gas coal of coal-bearing upper section of third member of Shahejie Formation, And then dissertate the variational regularity between coal rank and buried depth in vertical and otherness of vertical limit of coal rank in different coal-rich regions.
