(3) although community composition differed and changed, there was a fairly stable group of identifiable microorganisms in the water samples; and (4) a quantifiable, low-cost version of the H2S test costing less than 0.75USD had a similar relationship to diarrheal disease as did standard E. co...
贝托莱)had shown thathydrocyanicacid did not contain oxygen, and he later came to the same conclusion with respect to hydrogen sulfide; but these observations carried little weight in the face of the overwhelming unification that Lavoisier's system seemed to promise. 早在1787年,贝托莱就证明氢氰酸不...
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This paper presents field test results for a new two-point continuous hydrogen sulfide monitor (CEM) combining a versatile two-point sampling system with two independent H2S Gas Loggers: one for measuring 0 to 200 ppm; +/- 1 ppm, the other for measuring from 0 to 2 ppm; (+/- 5 ppb...
French hydrogène, from hydr- + -gène -gen; from the fact that water is generated by its combustion First Known Use 1788, in the meaning defined above Time Traveler The first known use of hydrogen was in 1788 See more words from the same year Phrases...
from waste water contg. NH3, H2S, etc. by stripping with steam, the steam at the top of the stripping tower 2 is cooled and condensed by heat-exchanging indirectly with water in a condenser 8. Further, the latent heat of the tower top steam is utilized for generation of low pressure ...
Hydrogen sulfide (H2S) is a novel signaling molecule involved in the growth and development of plants and their response to stress. However, the involvement of H2S in promoting the growth and development of tobacco plants is still unclear. In this study,
Coke oven gas made from pyrolysis (oxygen free heating) of coal has about 60% hydrogen, the rest being methane, carbon monoxide, carbon dioxide, ammonia, molecular nitrogen, and hydrogen sulfide (H2S). Hydrogen can be separated from other impurities by the pressure swing adsorption process. Japa...
A process for removing hydrogen sulfide from saturated steam is described whereby the steam and hydrogen sulfide entrained therein are contacted under conditions of turbulent flow with hydrogen peroxide. The effectiveness of the process is improved by simultaneously contacting the steam with a basic reage...
A hydrogen evolution reaction is the production of hydrogen through the process of water electrolysis. The evolution of hydrogen is possibly limited and based on the desorbing of molecules coming from the cathode surface. Hydrogen evolution usually occurs on metals such as: ...