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).
PCBs (polychlorinated biphenyls) are a type of organic chemical known as chlorinated hydrocarbons. PCBs are formed from a combination of one or more chlorine atoms and two benzene molecules. Two other names for PCBs are arochlors and chlorodiphenyls. In any PCB commercial mixture there may be 40 to 70 different compounds present.