Photoionization Detectors (PIDs) are the easiest and most efficient way to detect VOC levels. Although not as selective without the use of a gas chromatography column, a stand alone PID provides real time measurement of total volatile organic compounds in a portable format that anyone can use.
Ethnic: natural community of men with racial, linguistic, religious or cultural affinities. Understand that Native Americans is not a race but an ethnicity. The race of the native Americans of all the American Continent is Mongoloid.The paleoanthropological and genetic evidence demonstrates that approximately 14,500 years ago the Mongoloids crossed the Bering Stretch.re you referring to American Indians or Indians from India, In either case there is your answer Historically, India Indians are of the Caucasoid race, while Native Americans â¦ are of the Mongoloid race. Of course today, there is no biological basis for race. 3 people found this useful.
Who Is Native American, And Who Decides That? More than five million people in the U.S. claim some form of Native American identity, according to the U.S. Census Bureau. November is Native American Heritage Month and host Michel Martin kicks it off with the first in a series of conversations with author Anton Treuer. He talks about who is Native American and how that identity is determined.