General Information
Contents of this Page
- Measurement Units
Measurement Units
Length
Miles (mi) - All distances in this Map Service are reported in miles.
Concentration
Micrograms per Liter (µg/L) - All selenium concentrations in aqueous matrices are reported in µg/L - µg of selenium per L of water, one µg/L is roughly equivalent to one part per billion.
Milligrams per Liter (mg/L) - In aqueous applications, one mg/L is roughly equivalent to one part per million.
Micrograms per Kilogram (µg/kg) - These units are used to report concentration of analyte in plant samples - micrograms of analyte per kilogram of sample. Equivalent to parts per billion (ppb).
Micrograms per Gram (µg/g) - These units are used to report concentration of analyte in plant samples - micrograms of analyte per gram of sample. Equivalent to parts per million (ppm).
Parts per Million (ppm) - units of mass of analyte per million units of mass of sample (e.g. 20 ppm Selenium = 20 grams of selenium per million grams of water sampled = 20 milligrams).
Parts per Billion (ppb) - units of mass of analyte per billion units of mass of sample.
|
Please contact the website technician to report problems or to give feedback.
|
|
|
Web page last updated by Kindra Serr
|
|
|