Cu definition
Examples of Cu in a sentence
The mean value of copper was 0.438 ppm Cu in Tanyard Creek, 0.376 ppm Cu in Peavine Creek, and 0.250 ppm Cu in Stone Mountain Creek, which are within the 1.00 ppm Cu regulation level for aquatic life.
The dissolved oxygen and pH data were not adjusted but 107 of the 108 (99.07%) CHEMetrics Vacu-Vials test results were below the confidence interval of their respective tests and therefore had to be adjusted: 35 had to be adjusted to 0.05 ppm P for phosphate, 36 had to be adjusted to 0.10 ppm NO3-N for nitrate, and 36 had to be adjusted to 0.25 ppm Cu for copper.
All values that were under the minimum value measurable by the tests kits were adjusted to 0.05 ppm P for phosphate, 0.10 ppm NO3-N for nitrate, and 0.25 ppm Cu for copper.
The dissolved oxygen and pH data was not adjusted but 159 of the 288 (55.21%) CHEMetrics Vacu-Vials test results were below the confidence interval of their respective tests and therefore had to be adjusted: 66 had to be adjusted to 0.05 ppm P for phosphate, 9 had to be adjusted to 0.10 ppm NO3-N for nitrate, and 84 had to be adjusted to 0.25 ppm Cu for copper.
Concentrations over .025 ppm Cu can be toxic to freshwater organisms such as fish but only concentrations over 1.00 ppm Cu are controlled.