Niven is generally used as a boy's name. It consists of 5 letters and 2 syllables and is pronounced Ni-ven. In the U.S. in 2014, it ranked 11650 in baby name popularity for boys with 6 occurrences.
POLYCHLORINATED BIPHENYLS (PCBs) BY GAS CHROMATOGRAPHY. 1.0 SCOPE AND APPLICATION. 1.1 Method 8082 is used to determine the concentrations of polychlorinated biphenyls. (PCBs) as Aroclors or as individual PCB congeners in extracts from solid, tissue, and aqueous. matrices, using open-tubular, capillary columns with electron capt ure detectors (ECD) or electrolytic. conductivity detectors (ELCD).
LPG is Liquefied Petroleum Gas, a mixture of propane and butane liquefied at 15 Â°C and a pressure of 1.7 - 7.5 bar. Some variants of LPG are primarily propa... CNG is Compressed Natural Gas, which is mainly methane compressed at a pressure of 200 to 248 bars. LPG is Liquefied Petroleum Gas, a mixture of propane and butane liquefied at 15 Â°C and a pressure of 1.7 - 7.5 bar. Some variants of LPG are primarily propane so LPG is often colloquially called propane. CNG is cheaper and cleaner, but LPG has a higher calorific value. Distribution is easier for natural gas over long distances via pipelines.