In this paper, a statistical model, based on Analysis of Variance (ANOVA), was
developed to quantify the uncertainty in lead concentrations measured at the tap in homes
with lead service lines, using the number of sample replicates (for both long and short
periods of time) and the number of measurement repetitions. The statistical analysis was
conducted using data of duplicate samples collected in homes and small businesses that
have lead service lines (LSLs) in Edmonton by the Quality Assurance Department of EPCOR
Water Services Inc. in 2008 and 2009. The total uncertainty in measured lead
concentration was divided into process uncertainty, sampling uncertainty and analytical
uncertainty. Total uncertainty was determined by repeat sampling of the same home on
different days. Sampling uncertainty was determined by collecting duplicate samples on
the same day. Analytical uncertainty was determined by repeat measurements on the
same sample. Includes 6 references, figures.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 850 KB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 17 |
| Published : | 11/01/2009 |
